JDS Uniphase CellAdvisor JD780A Series User Manual

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CellAdvisor JD780A Series

Product Name/Family Brand

Attribute/Descriptor

Type of Manual

User's Manual

JD785A Base Station Analyzer

JD786A RF Analyzer

JD788A Signal Analyzer

Network and Service Enablement

One Milestone Center Court

Germantown, Maryland 20876-7100 USA

Toll Free 1-855-ASK-JDSU • Tel +1-240-404-2999 • Fax +1-240-404-2195

www.jdsu.com

Table of Contents

Summary of Contents for JDS Uniphase CellAdvisor JD780A Series

Page 1 CellAdvisor JD780A Series Product Name/Family Brand Attribute/Descriptor User’s Manual Type of Manual JD785A Base Station Analyzer JD786A RF Analyzer JD788A Signal Analyzer Network and Service Enablement One Milestone Center Court Germantown, Maryland 20876-7100 USA Toll Free 1-855-ASK-JDSU • Tel +1-240-404-2999 • Fax +1-240-404-2195...
Page 2 CellAdvisor JD780A Series Product Name/Family Brand Attribute/Descriptor User’s Manual Type of Manual JD785A Base Station Analyzer JD786A RF Analyzer JD788A Signal Analyzer Network and Service Enablement 20250 Century Boulevard Germantown, Maryland 20874 USA Toll Free 1-855-ASK-JDSU • Tel +1-301-353-1560 • Fax +1-240-404-1996...
Page 3 Every effort was made to ensure that the information in this manual was accurate at the time of release. However, information is subject to change without notice, and JDS Uniphase reserves the right to provide an addendum to this manual with information not available at the time that this manual was created.
Page 4 Foundation (http://www.apache.org/). This product used free library for JPEG image compression written and distributed by Independent JPEG Group or IJG (http://www.ijg.org/). See “Viewing OSS license” on page 40 for more information. Ordering information This manual is a product of JDSU, issued as part of the JD780A Series analyzers. The catalog number for a published manual is JD780A362 - printed.
Page 5 Instructions for returning waste equipment and batteries to JDSU can be found in the Environmental section of JDSU’s web site at www.jdsu.com. If you have questions concerning disposal of your equipment or batteries, contact JDSU’s WEEE Program Management team at WEEE.EMEA@jdsu.com.
Page 6: Table Of Contents
Contents About This Manual ..........................17 Purpose and scope ................................. 18 Assumptions..................................18 Safety and compliance information ..........................18 Safety consideration ............................... 18 Battery ..................................18 Electrostatic discharge precautions (ESD) ......................19 Using 12 V DC automotive adapter ......................... 20 Conventions ..................................
Page 7 Running IP test ................................43 Activating StrataSync ..............................44 Setting up Internet connection ..........................44 Establishing a connection to StrataSync ......................... 45 StrataSync status indicators ........................... 46 Setting communication ..............................46 Configuring Ethernet ............................... 46 Setting for JDViewer and JDRemote ........................47 Setting USBTMC mode ............................
Page 8 Conducting interference measurements ........................105 Spectrogram ................................. 105 Dual spectrogram ..............................107 RSSI ..................................108 Interference finder ..............................109 Spectrum Replayer ............................... 114 Radar Chart ................................114 Setting limit for interference analyzer ..........................119 Using GSM/GPRS/EDGE Signal Analyzer ..................121 Introduction ...................................
Page 9 Conducting spectrum measurements ..........................160 Setting trace ................................. 160 Conducting RF measurements ............................161 Channel power ..............................161 Occupied bandwidth ............................. 162 Spectrum emission mask (SEM) ........................... 163 ACLR..................................164 Multi-ACLR ................................165 Spurious emissions .............................. 166 Setting limit for RF tests ............................167 Conducting modulation measurements ..........................
Page 10 Frame ................................... 224 Time alignment error ............................. 227 Data allocation map .............................. 228 Setting limit for modulation tests ........................... 231 Performing auto measurements ............................ 232 Conformance test ..............................232 Maintenance test ..............................234 Signal performance test ............................236 DAS test ................................237 Performing power statistics CCDF measurements ......................
Page 11 Data allocation map .............................. 297 Setting limit for modulation tests ........................... 300 Performing auto measurements ............................ 301 Conformance test ..............................301 Maintenance test ..............................303 Signal performance test ............................306 DAS test ................................307 Performing power statistics CCDF measurements ......................308 Setting measure setup ............................
Page 12 Setting measure setup ............................358 Measurement example ............................359 Conducting CDMA OTA measurements ......................... 359 Channel scanner ..............................359 PN scanner ................................361 Multipath profile ..............................362 Code domain power ............................. 363 Route map ................................365 Using EV-DO Signal Analyzer ......................369 Introduction ...................................
Page 13 Over the air (OTA) ..............................414 Selecting measurement mode ............................415 Configuring test parameters ............................415 Setting frequency ..............................415 Setting amplitude ..............................416 Setting average ..............................418 Setting sweep mode ............................. 418 Setting trigger source............................419 Setting external clock............................419 Conducting spectrum measurements ..........................
Page 14 Setting limit for power vs. time tests ........................471 Measurement example ............................471 Conducting modulation measurements .......................... 472 Constellation ................................. 472 Spectral flatness ..............................473 EVM vs. subcarrier ............................... 475 EVM vs. symbol ..............................477 Setting limit for modulation tests ........................... 479 Performing auto measurements ............................
Page 15 Using E1 Analyzer ..........................518 Introduction ................................... 519 Display overview ................................519 Connecting a cable ................................ 520 Out-of-service testing............................520 In-service monitoring ............................520 Monitoring transmission ..............................521 Making a test ................................ 521 Measurement example ............................522 Performing BERT testing ............................... 522 Making a test ................................
Page 16 Setting amplitude ..............................552 Setting sweep mode ............................. 553 Making a measurement ............................553 Measurement example ............................554 Performing external RF power measurements ....................... 554 Connecting a cable ............................... 554 Selecting measurement mode ..........................555 Setting frequency ..............................555 Setting amplitude ..............................556 Making a measurement ............................
Page 17: About This Manual
About This Manual Topics discussed in this chapter include the following:  Purpose and scope ........................18  Assumptions ..........................18  Safety and compliance information ................... 18  Conventions ..........................20  Technical assistance ........................21...
Page 18: Purpose And Scope
JD780A Series Analyzers Purpose and scope The purpose of this manual is to help you successfully operate the JD780A series (firmware version 3.061 and later) and use its features and capabilities. This manual includes instructions that describe how to operate, set up, configure, and use the JD780A series, consisting of JD785A Base Station Analyzer, JD786A RF Analyzer, and JD788A Signal Analyzer.
Page 19: Electrostatic Discharge Precautions (Esd)
JD780A Series Analyzers Safety guide  Do not expose the battery to high temperature such as fire, heat, direct sun, etc.  Do not connect the positive and negative terminals of the battery together with any metal objects such as wires, paper clips, etc. ...
Page 20: Using 12 V Dc Automotive Adapter
JD780A Series Analyzers  Before removing a connected cable or getting in contact with the center pin, wear a wrist strap with one MΩ resistor connected to the ground.  All equipment must be connected to the ground to avoid accumulation of static charges. Using 12 V DC automotive adapter When powering or charging this instrument with the 12 V DC Automotive Adapter, always verify that the supply is rated for a minimum of 60 Watts @12 V DC and that the socket is clear of any dirt or...
Page 21: Technical Assistance
JD780A Series Analyzers Table 4 Safety definitions DANGER Indicates a potentially hazardous situation that, if not avoided, will result in death or serious injury. It may be associated with either a general hazard, high voltage, or risk of explosion symbol. WARNING Indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury.
Page 22: Jd780A Series Overview
JD780A Series Overview This chapter provides a general description of the JD780A series. Topics discussed in this chapter include the following:  About the JD780A series ......................23  Features and capabilities ......................23  Options ............................24  Specifications ..........................24...
Page 23: About The Jd780A Series
JD780A Series Analyzers About the JD780A series JDSU wireless RF and fiber test solutions for the field include base station analyzers, cable and antenna analyzers, and signaling analyzers for the installation and maintenance of modern wireless communication systems. RF and fiber test is critical for wireless operators facing challenges of signal quality and signaling interference, and maintaining quality high-bandwidth services.
Page 24: Options
JD780A Series Analyzers Key Features Table 6 Key functions Functionality JD785A JD786A JD788A    Spectrum Analyzer   Cable and Antenna Analyzer    RF Power Meter    Optical Power Meter    Fiber Inspection ...
Page 25: Getting Started
Getting Started This chapter provides general guides of how to get started with your JD780A series instrument. Topics discussed in this chapter are as follows:  Unpacking the JD780A series ....................26  Exploring the JD780A series ..................... 26  Installing battery pack ........................
Page 26: Unpacking The Jd780A Series
JD780A Series Analyzers Unpacking the JD780A series Unpack and inspect the shipping package thoroughly to ensure that nothing was damaged during the shipment. Also, check that your delivered package includes all of your ordered items in the shipment. If contents in the package are damaged or defective or if there are any missing items, keep the shipping list and materials for carrier’s inspection and contact your nearest JDSU's authorized sales and service office.
Page 27: Front Panel
JD780A Series Analyzers Front panel The JD780A series analyzers have the same front panel look as like Figure 1, except for the bumpers in different colors. Power on/off button Description POWER ON/OFF – You can turn your instrument on or off. Two LEDs indicate power source and status.
Page 28: Top Panel
JD780A Series Analyzers PRESET – You can use this key to return to a known state and make measurements. HOLD – You can change the sweep mode: Continue or Single. LIMIT – You can set limit settings such as display line, multi segment line, save limits, recall limits, or test specification limits.
Page 29 JD780A Series Analyzers Figure 2 JD785A top panel view Reflection/RF Out (Cable and Antenna Analyzer) The Reflection/RF Out port of the Cable and Antenna Analyzer is a precise 50 Ω N-type female connector that is used as the output signal port for the Cable and Antenna Analyzer mode. CAUTION Do not apply or connect power exceeding +25 dBm to this Reflection/RF Out port.
Page 30: Installing Battery Pack
JD780A Series Analyzers  CLIENT: This is a communication port that you can connect your instrument and your PC with application software JDViewer, JDRemote, or JDMapCreator. You must install driver software for the instrument on to the computer. See “Appendix H – Device driver installation” on page 581 for more information.
Page 31: Starting Up The Jd780A Series
JD780A Series Analyzers Slide in the battery cover to close. Tighten the latching screw of the battery cover by turning clockwise. To remove the battery pack: Loosen the latching screw of the battery cover by turning counter clockwise. Slide out the battery cover. Hold the battery strap and pull it out.
Page 32 JD780A Series Analyzers Procedure Press the SAVE/LOAD hot key. The Save/Load screen menu bar appears. Press the Save soft key. Select the save option, from the following choices: To save Select File type .png Current screen Save Screen > Screen .pdf Measurement result in a report Save Screen >...
Page 33 JD780A Series Analyzers Procedure Press the SAVE/LOAD hot key. The Save/Load screen menu bar appears. Press the Save soft key. Press the Save On Event soft key. Press the Save Type soft key, and then select the save option: Screen, Result, or Result as CSV Format.
Page 34: Using Load
JD780A Series Analyzers Location button, select your desired file path using the touch screen or the rotary knob, and then press the Apply soft key. NOTE In is recommended that you use an external USB memory drive to save logging data in the Auto Measure mode in order to have enough free space.
Page 35: Configuring System
JD780A Series Analyzers To copy, cut, and paste, complete the following steps: Select a file or folder by using the touch screen or the rotary knob. Select the Copy or Cut soft key. Select the location to which the file or folder to be pasted. Press the Paste soft key.
Page 36: Setting Language
JD780A Series Analyzers Press the Enter soft key to save your change. Press the Apply screen key to save and exit. Setting language You can change the system language for the menus, messages, and information on screen. Procedure Press the SYSTEM hot key. Select System Configuration >...
Page 37: Setting Sleep Time
JD780A Series Analyzers Setting sleep time You can set the amount of time up to 255 minutes to let the instrument automatically turn the backlight off and enter into power saving mode after no actions or data entries. Default setting is zero, which indicates that the sleep mode is turned off and screen backlight is always on.
Page 38: Checking Installed Firmware Version
JD780A Series Analyzers Checking installed firmware version Procedure Press the SYSTEM hot key. Press the HW/FW Info soft key. Find the installed version number in the Firmware field. JDSU’s Software Updates website From a computer with Internet access, visit and check if your installed firmware is the latest one.
Page 39: Managing Licenses
JD780A Series Analyzers Upgrading from FTP server Procedure Power your instrument via the AC-DC adapter to prevent any severe damage to your instrument caused by a power-off in the middle of the upgrade, which may require a repair in the factory. Press the SYSTEM hot key.
Page 40: Loading Temporary License
JD780A Series Analyzers Select More (1/2) > License Manager. The License Manager menu bar appears. Select the Install an Option soft key. The Installable Options window appears. Highlight the name of the option from the list by using the rotary knob. Press the ENTER hard key.
Page 41: Running Self-Test
JD780A Series Analyzers Press the SYSTEM hot key. Select More (1/2) > Svc Diagnostic > System Logging. Optional. Press the Save soft key to save the system log as a .log file type. Running self-test You can run a self-test on your instrument boards and modules. Procedure Press the SYSTEM hot key.
Page 42: Using System Administration
JD780A Series Analyzers Using system administration The Administration is used to disable editing limits, enable modifying online help, or change administration password. Logging in You need to log in first to access the administration menus. Procedure Press the SYSTEM hot key. Select More (1/2) >...
Page 43: Modifying Online Help
JD780A Series Analyzers Procedure Press the SYSTEM hot key. Select More (1/2) > Administration, and then enter your password. Toggle the Edit Limit soft key and select Disable to lock the LIMIT hot key or Enable to unlock the key. NOTE Disabling the Edit Limit limits the access to the LIMIT hot key only.
Page 44: Activating Stratasync
JD780A Series Analyzers Activating StrataSync StrataSync is a cloud-based solution that provides asset, configuration, and test data management for JDSU instruments. StrataSync manages and tracks test instruments, collects and analyzes results from the entire network, and informs and trains the workforce. The JD780A series is compatible with the JDSU StrataSync cloud.
Page 45: Establishing A Connection To Stratasync
JD780A Series Analyzers On your mobile device, enter 0000 in the PIN field, and then tap the OK button or Pair. If the connection is successful, “(Paired & Connected)” appears next to the name of your mobile device on your instrument. If the connection is unsuccessful, repeat steps 6 and 7. Press the PREV hard key to return to the Bluetooth Information screen that displays the paired device and connected service including your CellAdvisor’s IP Address.
Page 46: Stratasync Status Indicators
JD780A Series Analyzers Figure 3 StrataSync setting window StrataSync status indicators The StrataSync indication icons provide you with the connection and activity status. Indicator Description Indicates that your instrument is idle to be connected and synchronized with the StrataSync server. Indicates that your instrument is acquiring an authentication, synchronizing with the server, and sharing data.
Page 47: Setting For Jdviewer And Jdremote
JD780A Series Analyzers Select System Configuration > Ethernet Config > IPv4. The Ethernet Configuration box appears. Do one of the following: – To enable automatic IP addressing, toggle the Mode soft key and select DHCP. – To manually assign fixed IP addresses, complete the following steps: Toggle the Mode soft key and select Static.
Page 48: Setting Usbtmc Mode
JD780A Series Analyzers Procedure Press the SYSTEM hot key. Press the System Configuration soft key. Press the Remote Interface soft key and then do the following: – Select the LAN soft key and then press the App SW soft key. –...
Page 49: Enabling Wi-Fi Connection
The Wi-Fi LAN card is detected and the white Wi-Fi indicator appears on the screen to indicate it. NOTE CellAdvisor JD780A series is compatible only with a USB LAN card that uses Realtek NICs (RTL8188eu, RTL8192cu, and RTL8812au). Press the SYSTEM hot key.
Page 50: Enabling Web-Based Remote Control
JD780A Series Analyzers updated with information about the connected network including SSID, status, authentication type, encryption method, BSSID, and assigned IP address(es). If you have selected Auto for IPv6 in step 6, you will have Link-Local, Stateless, and Stateful instead of IP Address. If you see the green Wi-Fi indication with a red exclamation mark in the center, it means that an IP address has not been assigned.
Page 51 JD780A Series Analyzers NOTE If your network does not support the automatic IP addressing, contact your network administrator to get a fixed IP address assigned to your instrument. – For wireless LAN connection: Select System Configuration > Remote Interface > Wi-Fi. Select the currently connected network from the list, and then press the Select soft key.
Page 52 JD780A Series Analyzers Figure 6 Example of Web remote on Chrome Getting Started...
Page 53: Analyzing Measurement Results
Analyzing Measurement Results This chapter provides instructions on how to use JD780A series’ capabilities for measurement analysis. Topics discussed in this chapter are as follows:  Using marker ..........................54  Using peak search ........................55...
Page 54: Using Marker
JD780A Series Analyzers Using marker Marker Marker is used to get the information about a specific trace. Six markers can be set on the display and each marker can be used independently. The X and Y coordinates of the trace are displayed when the marker is placed on any position of the trace.
Page 55: Using Peak Search
JD780A Series Analyzers disable the noise marker function for the selected active marker. NOTE Frequency Count and Noise Marker functions are used only in the Spectrum Analyzer mode. Using peak search Peak search Each time the Peak Search soft key is pressed, the active marker is positioned at the highest peak of the trace.
Page 56: Using Spectrum Analyzer
Using Spectrum Analyzer This chapter provides instructions for using the Spectrum Analyzer function. Topics discussed in this chapter are as follows:  Introduction ..........................57  Display overview ........................57  Connecting a cable ........................58  Selecting measurement mode ....................59 ...
Page 57: Introduction
JD780A Series Analyzers Introduction The advantage of using the Spectrum Analyzer is easy to verify the presence of unwanted signals such as spurious and harmonics, which are normally very hard to identify in time domain analysis. Performance assurance in wireless communication systems includes the observation of the out-of- band signal characteristics in order to identify the presence of harmonic signals.
Page 58: Connecting A Cable
JD780A Series Analyzers Figure 7 Spectrum measurement screen Connecting a cable There are two ways that you can make a connection of your instrument and the base station to be tested: direct or indirect. Procedure To make a direct connection: Connect the Spectrum Analyzer RF In port of the JD780A series and the PA output port of BTS as shown in Figure 8.
Page 59: Selecting Measurement Mode
JD780A Series Analyzers Figure 9 Indirect connection JD785A/JD786A JD788A CAUTION The maximum power for the Spectrum Analyzer RF In port is +25 dBm (0.316 W). If the input signal level to be measured is greater than +25 dBm, use a High Power Attenuator to prevent damage when you directly connect the signal to the instrument or connect the signal from the coupling port of a directional coupler.
Page 60 JD780A Series Analyzers Procedure To set the center frequency and span: Press the FREQ/DIST hard key. Toggle the Unit soft key and select Freq. Press the Center Frequency soft key. Enter a value by using the numeric keys. You can also use the rotary knob or the arrow keys. Select the unit: GHz, MHz, kHz, or Hz.
Page 61: Setting Amplitude
JD780A Series Analyzers Select the span option, from the following choices: – To set the span manually, select Span, enter a value, and then select the unit. – To set the span automatically, select Full Span, Zero Span, or Last Span as needed. NOTE The Zero Span option is available only in the Spectrum mode.
Page 62 JD780A Series Analyzers steps: Select Attenuation > Manual. Press the Attenuation Value soft key to set the level. Enter a value between 0 and 55 in fives by using the numeric keys. Press the dB soft key or the ENTER hard key. –...
Page 63: Setting Bandwidth
JD780A Series Analyzers Toggle the External Offset soft key and select Off. NOTE This setting is not used in the Field Strength mode. Scale per division You can use the Scale/Div feature available for the spectrum measurement screen. It represents the value of one division on the horizontal scale.
Page 64: Setting Average
JD780A Series Analyzers NOTE This setting is not used in the Spurious Emissions mode. Table 10 VBW/RBW ratio example Ratio (VBW/RBW) 30 kHz 30 kHz 1:0.3 10 kHz 1:0.1 3 kHz 1:0.03 1 kHz 1:0.01 300 Hz 1:0.003 100 Hz Setting average You can set the number of measurements to be averaged for the trace presentation.
Page 65 JD780A Series Analyzers NOTE This setting is not used in the Spurious Emissions mode. Sweep mode The default settings of the sweep mode are Continue and Normal to sweep continuously at a normal speed for most on-going measurements. If you want to hold the measurement or get a single sweep, you can change the sweep mode.
Page 66: Using Rf Source
JD780A Series Analyzers Toggle the Period soft key and select Manual. Press the Period soft key to enter the amount of time. Enter a value by using the numeric keys. Select the unit: Sec, mSec, or µSec. Press the TRIGGER hot key, and then do one of the following: –...
Page 67: Setting Trace
JD780A Series Analyzers Figure 10 Spectrum measurement with spectrum analyzer Setting trace You can display up to six traces on the measurement chart simultaneously. Procedure Press the TRACE/DISPLAY hard key. Press the Select Trace soft key, and then select the trace number: T1, T2, T3, T4, T5, or T6. The legend shape of the selected trace changes from square to round to indicate that the trace is the active one now.
Page 68: Setting Limit
JD780A Series Analyzers Display the input signal’s maximum response only Max Hold (unlimited or for a certain amount of time) Display the input signal’s minimum Min Hold response only (unlimited or for a certain amount of time) Capture the selected trace and compare traces Capture Load a saved trace More (1/2) >...
Page 69: Conducting Rf Measurements
JD780A Series Analyzers To display the multiple segment line: Press the LIMIT hot key. Press the Multi Segment Line soft key for Pass/Fail indication. Toggle the Limit soft key between Upper and Lower to select the one to be displayed. Set the number of segments for the selected upper or lower limit line.
Page 70 JD780A Series Analyzers Procedure Configure test parameters as described in the “Configuring test parameters” on page 59. Press the MEASURE SETUP hot key. Set the channel power measurement bandwidth to be measured: Press the Integrated BW soft key. Enter a bandwidth by using the numeric keys. You can also use the rotary knob. Select the unit: GHz, MHz, kHz, or Hz.
Page 71: Occupied Bandwidth
JD780A Series Analyzers Measurement example Figure 11 Channel power measurement with spectrum analyzer Channel power measurement result shows channel power and spectrum density in a user specified channel bandwidth. The peak to average ratio (PAR) is shown at the bottom of the screen as well. The shaded area on the display indicates the channel bandwidth.
Page 72: Spectrum Emission Mask (Sem)
JD780A Series Analyzers Press the Average soft key. Enter a value between 1 and 100. Press the Enter soft key. Setting limit Procedure Press the LIMIT hot key. Press the Occupied BW soft key to set the limit parameters. Toggle the Test Limits soft key between On and Off to enable or disable the Pass/Fail indication. Set the upper threshold: Press the High Limit soft key.
Page 73 JD780A Series Analyzers Setting measure setup After configuring test parameters, you can set the measure setup to continue your measurement. The measurement settings can be saved and recalled as a file. You can also use JDViewer, PC application software to configure a measure setup, save as a file, and load the file on to the instrument. Procedure Configure test parameters as described in the “Configuring test parameters”...
Page 74: Adjacent Channel Power (Acp)
JD780A Series Analyzers Setting limit Procedure Press the LIMIT hot key. Press the Spectrum Emission Mask soft key. Toggle the Test Limits soft key between On and Off to enable or disable the Pass/Fail indication. Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings. See “Using save”...
Page 75 JD780A Series Analyzers Press the Main Channel BW soft key. Enter a value by using the numeric keys. You can also use the rotary knob. Select the unit: MHz, kHz, or Hz. Set the frequency range over which the instrument will sweep: Press the Span soft key.
Page 76: Multi-Acp
JD780A Series Analyzers Measurement example Figure 14 Adjacent channel power measurement with spectrum analyzer Multi-ACP The Multi-ACP measurement is used to do multi-channel ACP testing. It helps you to measure ACP in multi-channel transmitting base station environment. Setting measure setup After configuring test parameters as described in “Configuring test parameters”...
Page 77 JD780A Series Analyzers Toggle the Link soft key to select the sweep direction and select Fwd or Rev as needed. Press the Lowest Channel soft key. Enter a value by using the numeric keys. Press the Enter soft key or ENTER hard key to complete the entry. The instrument automatically displays the corresponding center frequency value for the selected channel number.
Page 78: Spurious Emissions
JD780A Series Analyzers Setting limit Procedure Press the LIMIT hot key. Press the Multi-ACP soft key. Toggle the Test Limits soft key between On and Off to enable or disable the Pass/Fail indication. Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings. See “Using save”...
Page 79 JD780A Series Analyzers Do the following as desired: – Select Start Frequency, and then specify the start frequency for the selected range. – Select Stop Frequency, and then specify the stop frequency for the selected range. – Select Start Limit, and then specify the lower limit for Pass/Fail indication. –...
Page 80: Am/Fm Audio Demodulation
JD780A Series Analyzers Measurement example Figure 16 Spurious emissions measurement with spectrum analyzer AM/FM audio demodulation The AM/FM Audio Demodulator operates using the power received from radio waves and it serves as an alternative to identify interfering signals easily. The instrument sounds demodulated signals that can be heard through the built-in speaker or plugged-in headphones.
Page 81 JD780A Series Analyzers feature to adjust the interval gain of the demodulator. Optional. You can use the Save On Event soft key to let the instrument automatically save measurement screen or result that falls outside the defined limit settings or the Fail indicator is on.
Page 82: Field Strength Meter
JD780A Series Analyzers – To add a new point, press the Add Point soft key. – To delete the selected point, press the Delete Point soft key. – To change the position, press the Frequency or Amplitude soft key, and then turn the rotary knob to change the value as desired.
Page 83 JD780A Series Analyzers NOTE You can use the JDViewer to edit or define a custom antenna and add to this list. – To edit the properties of the connected antenna: Press the Antenna Start Frequency soft key. Enter a value by using the numeric keys, and then select the unit: GHz, MHz, kHz, or Hz.
Page 84: Route Map
JD780A Series Analyzers Optional. To edit the segment properties, complete the following steps: Press the Edit Limit soft key. Press the Move soft key and then turn the rotary knob to select the segment to edit. Select the menu option, from the following choices: –...
Page 85 JD780A Series Analyzers Configure test parameters as described in the “Configuring test parameters” on page 59. To load your map file, complete the following steps: Plug in your USB drive that has a floor map or .mcf file type created in JDMapCreator. . If the JDMapCreator application on your computer is connected to the instrument via USB or LAN, you can send a map file with a single layer to the instrument directly by using the Send to EQP menu in JDMapCreator.
Page 86 JD780A Series Analyzers NOTE For the Position setting, you can change the direction of the route with screen touch or the arrow keys and the distance with the rotary knob. For the Time setting, the instrument interpolates points in between two enters on a straight dotted line. You can change the direction of the route with the arrow keys and the distance with the rotary knob.
Page 87 JD780A Series Analyzers Measurement example Figure 19 Route map measurement screen with GPS Controlling a map If you have loaded a sizable map that was created in JDMapCreator 1.2.0 or later, you can use the Map Control feature that enables you to zoom into the map and view a specific area of interest in detail. Procedure Press the TRACE/DISPLAY hard key.
Page 88: Dual Spectrum
JD780A Series Analyzers Procedure Copy a set of raster data files into your USB memory drive, including the following: – ASCII: .tab, .asc, and .clr files – BIL: .tab,.hdr, .bil, and .clr files NOTE The .tab file type is a geospatial vector data format used in many geographic information systems.
Page 89: Pim Detection (Single And Multiple Carriers)
JD780A Series Analyzers Setting measure setup Procedure Configure test parameters as described in the “Configuring test parameters” on page 59. Press the MEASURE SETUP hot key. Toggle the Active Window soft key between Top and Bottom to select the measurement window to configure or work on.
Page 90 JD780A Series Analyzers – To set the center frequency and span, complete the following steps: Toggle the Unit soft key and select Freq. Press the Uplink Center Frequency soft key. Enter a value by using the numeric keys. You can also use the rotary knob. Select the unit: GHz, MHz, kHz, or Hz.
Page 91 JD780A Series Analyzers Figure 23 PIM detection for multiple carriers Using Spectrum Analyzer...
Page 92: Using Interference Analyzer
Using Interference Analyzer This chapter provides instructions for using the Interference Analyzer function (option 011). Topics discussed in this chapter are as follows:  Introduction ..........................93  Display overview ........................93  Connecting a cable ........................94  Selecting measurement mode ....................95 ...
Page 93: Introduction
JD780A Series Analyzers Introduction Interference is becoming more prevalent in the wireless community with the increasing number of transmitters coming on the air. Wireless service providers have traditionally used spectrum analyzers to monitor service channels, frequencies, and adjacent spectrum and to locate sources of interference. A spectrum analyzer can only show you an interfering signal and you require determining the source of the interference.
Page 94: Connecting A Cable
JD780A Series Analyzers Figure 24 Interference measurement screen Connecting a cable Using an Omni or Yagi antenna Procedure Connect an Omni/directional RF antenna to the Spectrum Analyzer RF In port of the JD780A series. Connect a GPS antenna to the GPS port of the JD780A series. Figure 25 Interference measurement connection JD788A...
Page 95: Using An Antennaadvisor Handle
JD780A Series Analyzers CAUTION If the input signal level to be measured is less than 0 dBm, set it to 0 dB attenuation or turn on the preamp to have better dynamic range for the testing. Using an AntennaAdvisor handle In the Interference Finder mode and the Radar Chart mode, you can perform interference hunting using the AntennaAdvisor Handle after attaching a broadband Yagi antenna to it.
Page 96: Configuring Test Parameters
JD780A Series Analyzers To change the mode, press the MEASURE hot key and then select the measurement mode: Spectrogram, Dual Spectrogram, RSSI, Interference Finder, Spectrum Replayer, or Radar Chart. NOTE If the Dual Spectrogram is selected, you can select the left or right measurement pane in MEASURE SETUP to configure measurement parameters for the selected spectrogram.
Page 97: Setting Amplitude
JD780A Series Analyzers See “Appendix C – Band, frequency & channel standard” on page 571 for more information. Select the band to be measured by using the rotary knob, the arrow keys, or the Page Up/Page Down soft keys. Press the Select soft key or the rotary knob to confirm the selection. Toggle the Link soft key to select the sweep direction and select Fwd for forward or Rev for reverse.
Page 98 JD780A Series Analyzers To set the maximum reference value on the Y-axis manually, complete the following steps: Press the Reference Level soft key. Enter a value by using the numeric keys or the rotary knob with 10 dB increments. Press the dBm soft key or the ENTER hard key. To set the attenuation option, select one from the following choices: –...
Page 99: Setting Bandwidth
JD780A Series Analyzers Procedure Press the AMP/SCALE hard key. Toggle the Preamp soft key and select On or Off as needed. NOTE You can turn the Preamp on when the input attenuation range is from 0 dB to 10 dB. If the attenuation value is manually set to greater than 10 dB, the instrument will automatically turn off the pre-amplifier to display low-level signal properly on the chart.
Page 100: Setting Average
JD780A Series Analyzers Enter a value between 1 Hz to 3 MHz in 1-3 sequence by using the numeric keys. Select the unit: MHz, kHz, or Hz. The RBW setting automatically changes to Manual. Press the VBW soft key. Enter a value by using the numeric keys. Select the unit: MHz, kHz, or Hz.
Page 101 JD780A Series Analyzers – To automatically set, toggle the Sweep Time soft key and select Auto. – To manually set, complete the following steps: Press the Sweep Time soft key. Enter a value by using the numeric keys. Select the unit: Sec, mSec, or µSec. The sweep time mode automatically changes to Manual.
Page 102: Conducting Spectrum Measurements
JD780A Series Analyzers Toggle the Period soft key and select Manual. Press the Period soft key to enter the amount of time. Enter a value by using the numeric keys. Select the unit: Sec, mSec, or µSec. Press the TRIGGER hot key, and then do one of the following: –...
Page 103: Sound Indicator
JD780A Series Analyzers Display the input signal’s minimum response only Min Hold (unlimited or for a certain amount of time) Capture the selected trace and compare traces Capture Load a saved trace More (1/2) > Load Hide the selected trace Trace View >...
Page 104: Am/Fm Audio Demodulation
JD780A Series Analyzers – To set the limit as the alarm reference, complete the following steps: Toggle the Alarm Reference soft key and select Line. The Limit Line menu becomes activated to be set. Press the Limit Line soft key to define a threshold for the limit line. Enter a value by using the numeric keys.
Page 105: Conducting Interference Measurements
JD780A Series Analyzers Toggle the Interference ID soft key between On and Off to turn the Interference ID on and off. To set the threshold level manually, complete the following steps: Press the Threshold soft key. Enter a value by using the numeric keys. Press the dBm soft key.
Page 106 JD780A Series Analyzers Figure 27 Interference measurement in spectrogram  The horizontal line or X-axis of the spectrogram is frequency.  The vertical line or Y-axis is time.  The color identification (Spectrogram) indicates power level of the tracked signal. As the signal strength increases, the color on the spectrogram changes accordingly.
Page 107: Dual Spectrogram
JD780A Series Analyzers Dual spectrogram The Dual Spectrogram mode is useful to compare two spectrograms displayed simultaneously on the screen. Setting measure setup Procedure Configure test parameters as described in the “Configuring test parameters” on page 95. Press the MEASURE SETUP hot key. Toggle the Active Window soft key and select Left or Right spectrogram to be set up.
Page 108: Rssi
JD780A Series Analyzers RSSI The Received Signal Strength Indicator (RSSI) is a multi-signal tracking metric that is particularly useful for measuring power-level variations over time. The RSSI measurement lets you assign power limit line for audible alarms and increase alarm counters every time a signal exceeds a defined limit line.
Page 109: Interference Finder
JD780A Series Analyzers Measurement example Figure 30 Interference measurement in RSSI NOTE You can use the LIMIT hot key to analyze your measurements with the display line, multi- segment line, and channel limit. See “Setting limit for interference analyzer” on page 119 for more information.
Page 110 JD780A Series Analyzers providing x1, x2, and x4 views, as a sizable map file so that you can zoom in and out after loading it. Press SAVE/LOAD hot key, and then select Load > Load Map. Navigate to a map file you want to open. The File Information pane displays file properties including file name, map type, and address.
Page 111 JD780A Series Analyzers Release the TRIGGER button to stop scanning. – Using a compass, complete the following steps: Press the Azimuth soft key. Pan your Yagi antenna to find a signal with highest RSSI value, and then measure an azimuth of the interfering signal. Enter the measured angle using the numeric keys, and then press the Enter soft key.
Page 112 JD780A Series Analyzers Toggle the Screen Mode soft key to select Map or Full as needed. – Map: This option displays what are inside the base map with the map image. – Full: This option displays three location points and defined circle without the map image. Controlling a map If you have loaded a sizable map that was created in JDMapCreator 1.2.0 or later, you can use the Map Control feature that enables you to zoom into the green-shaded area on the map and view the...
Page 113 JD780A Series Analyzers Loading and displaying raster data If you have a set of raster data files generated through the ariesoGEO application, you can load and overlay the data on your base map to help you assume suspicious points of interference easily and pinpoint the source of the interference quickly.
Page 114: Spectrum Replayer
JD780A Series Analyzers Spectrum Replayer The Spectrum Replayer lets you retrieve and replay recorded spectrum analyzer traces in interference analysis mode. These traces can be played back in the spectrogram or RSSI. You can configure the limit line to create failure points when signals exceed it. The failure points are clearly displayed on the trace timeline for quick access during playback.
Page 115 JD780A Series Analyzers broadband directional antenna so that you can determine the direction of the source of the interference. A set of the AntennaAdvisor Handle with the antenna is mandatory to perform measurements in this mode. If you have obtained user experience data through JDSU’s ariesoGEO and generated raster data files from the application, you can load them onto your base map to help you troubleshoot problems easily and quickly.
Page 116 JD780A Series Analyzers Toggle the Zoom to soft key and select Center. Press the Zoom In and Zoom Out soft keys, as you need, to zoom in and zoom out. Move the zoomed-in area by using the four arrow keys, as you need. Initializing AntennaAdvisor After you have connected the AntennaAdvisor Handle and loaded a map for the area of interest, you must initialize the AntennaAdvisor Handle to calibrate its built-in compass in order to obtain accurate...
Page 117 JD780A Series Analyzers Hold the antenna handle set horizontally and then make the following measurement: – To obtain a RSSI value, complete the following steps: Press the TRIGGER button located on the antenna handle. Every time you press the physical button on the handle, a beep is sounded and a power level of the received signal is plotted as a blue dot on the radar chart.
Page 118 JD780A Series Analyzers Measurement example Figure 33 RSSI data plotted on the radar chart Figure 34 Localized RSSI data on the radar chart Loading and displaying raster data If you have a set of raster data files generated through the ariesoGEO application, you can load and overlay the data on your background map to help you view suspicious points of interference easily and pinpoint the source of the interference quickly.
Page 119: Setting Limit For Interference Analyzer
JD780A Series Analyzers NOTE The .tab file type is a geospatial vector data format used in many geographic information systems. The color file (.clr) is an optional file, but the image will be displayed as a grayscale image without it. The size of the raster map must be 1024 x 1024 or smaller.
Page 120 JD780A Series Analyzers Press the Edit Limit soft key. Press the Move soft key and then turn the rotary knob to select the segment to edit. Select the menu option, from the following choices: – To hide the line for the selected segment, toggle the Line soft key and select Off. –...
Page 121: Using Gsm/Gprs/Edge Signal Analyzer
Using GSM/GPRS/EDGE Signal Analyzer This chapter provides instructions for using the GSM/GPRS/EDGE Signal Analyzer function (option 022) with GSM//GPRS/EDGE OTA Analyzer function (option 042). Topics discussed in this chapter are as follows:  Introduction ..........................122  Display overview ........................122 ...
Page 122: Introduction
JD780A Series Analyzers Introduction The Global System for Mobile Communications (GSM) is a digital cellular standard that uses Time Division Multiple Access (TDMA) multiplexing scheme and Gaussian Minimum Shift Keying (GMSK) modulation. The Enhanced Data Rates for GSM Evolution (EDGE) is an enhancement to GSM that promises to deliver multimedia and other broadband applications.
Page 123: Connecting A Cable
JD780A Series Analyzers Figure 35 GSM signal analyzer measurement screen Connecting a cable Direct connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the power amplifier output port of BTS. Figure 36 Direct connection JD785A/JD786A JD788A Indirect connection Procedure...
Page 124: Over The Air (Ota)
JD780A Series Analyzers Figure 37 Indirect connection JD785A/JD786A JD788A CAUTION The maximum power for the Spectrum Analyzer RF In port is +25 dBm (0.316 W). If the input signal level to be measured is greater than +25 dBm, use a High Power Attenuator to prevent damage when you directly connect the signal to the instrument or connect the signal from the coupling port of a directional coupler.
Page 125: Selecting Measurement Mode
JD780A Series Analyzers Selecting measurement mode Procedure Press the MODE hard key. Press the Signal Analyzer soft key. Press the GSM soft key. The Spectrum mode is set by default. Press the MEASURE hot key, and then select the measurement mode option from the following choices: –...
Page 126: Setting Amplitude
JD780A Series Analyzers Select the band to be measured by using the rotary knob, the arrow keys, or the Page Up/Page Down soft keys. Press the Select soft key or the rotary knob to confirm the selection. Press the Channel Number soft key. Enter a value by using the numeric keys.
Page 127 JD780A Series Analyzers Press the dB soft key or the ENTER hard key. – To couple the input attenuator’s level with your reference level setting, select Attenuation > Couple. As you increase the reference setting, the attenuation level also increases acoordingly. Optional.
Page 128: Setting Average
JD780A Series Analyzers Press the AMP/SCALE hard key. Toggle the External Offset soft key and select On. Enter a value by using the numeric keys. Press the dB soft key to complete the entry. To turn the external offset off: Press the AMP/SCALE hard key.
Page 129: Conducting Spectrum Measurements
JD780A Series Analyzers To set the trigger level Select When using the RF burst (wideband) trigger RF Burst To free burst if there is a frequency burst signal Internal FB To training sequence code RF Burst & TS To external trigger reference External To the free trigger Free...
Page 130: Setting Trace
JD780A Series Analyzers NOTE The Delay setting is used only when there is a time offset in the signals to be measured. Setting trace You can display up to six traces on the measurement chart simultaneously. Procedure Press the TRACE/DISPLAY hard key. Press the Select Trace soft key, and then select the trace number: T1, T2, T3, T4, T5, or T6.
Page 131 JD780A Series Analyzers Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 125, you can continue your measurement. Procedure Press the MEASURE SETUP hot key. Press the Time Slot soft key to assign a time slot with which performs measurements, and then select your desired time slot number from 0 to 7.
Page 132: Occupied Bandwidth
JD780A Series Analyzers Occupied bandwidth The Occupied Bandwidth measures the spectrum shape of the carrier. It is defined as the bandwidth, which includes 99% of the transmitted power among total transmitted power. Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 125, you can continue your measurement.
Page 133: Spectrum Emission Mask (Sem)
JD780A Series Analyzers information. Spectrum emission mask (SEM) The Spectrum Emission Mask (SEM) measurement is to identify and determine the power level of out- of-band spurious emission outside the necessary channel bandwidth and modulated signal. It measures the power ratio between in-band and adjacent channels. The JD780A series indicates either Pass or Fail based on the specified limit of the signal.
Page 134: Outpur Rf Spectrum
JD780A Series Analyzers NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 136 for more information. Outpur RF spectrum The Output RF Spectrum measures power of the output RF modulation spectrum of the carrier at different frequency offsets from the carrier in different measurement bandwidths.
Page 135: Spurious Emissions
JD780A Series Analyzers NOTE A set of limit values are applied according to the current channel power and automatically displayed in the result table. You can use the LIMIT hot key to enable or disable the Pass/Fail indication. See “Setting limit for RF tests” on page 136 for more information. Spurious emissions Out-of-band emissions are unwanted emissions immediately outside the channel bandwidth resulting from the modulation process and non-linearity in the transmitter but excluding spurious emissions.
Page 136: Setting Limit For Rf Tests
JD780A Series Analyzers Measurement example Figure 44 Spurious emissions measurement with GSM signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 136 for more information.
Page 137: Conducting Power Vs. Time Measurements
JD780A Series Analyzers Conducting power vs. time measurements The Power vs. Time measurement measures the mean transmission power during the useful part of GSM bursts and verifies that the power ramp fits within the defined mask. It also lets you view the rise, fall, and useful part of the GSM burst.
Page 138: Power Vs. Time (Frame)
JD780A Series Analyzers Enter a value for the lower limit, and then press the dBm unit soft key. Optional. You can enable alarm sound that goes off if the measurement falls outside of the limit. Toggle the Beep soft key between On and Off to enable or disable the beep sound. Optional.
Page 139 JD780A Series Analyzers Procedure Press the MEASURE SETUP hot key. Press the Detect Mode soft key, and then select the signal standard option: Auto, GSM, or EDGE. Auto is set by default. The instrument applies a mask automatically based on the selected mode.
Page 140: Conducting Constellation Measurements
JD780A Series Analyzers Measurement example Figure 46 Power vs. time (frame) measurement with GSM signal analyzer Conducting constellation measurements The Constellation is used to observe some aspects of modulation accuracy and can reveal certain fault mechanisms such as I/Q amplitude imbalance or quadrature imbalance. It displays constellation diagram by modulation types.
Page 141: Setting Limit For Constellation
JD780A Series Analyzers NOTE The Delay setting is used only when there is a time offset in the signals to be measured. Setting limit for constellation Procedure Press the LIMIT hot key. Press the Modulation Test Limits soft key to set the limits in the Constellation measurement. Select the test item(s) and set the limit(s) depending on your selected measurement mode: To set the limit for Select...
Page 142: Performing Auto Measurements
JD780A Series Analyzers NOTE Measurement items such as IQ Origin Offset, C/I, EVM RMS/Peak and EVM 95 are applicable only to EDGE signal measurements. Performing auto measurements The Auto Measure function of the JD780A series allows a complete signal profiling covering RF characterization and modulation quality parameters of up to 10 different carriers, particularly useful on an overlay architecture where base stations are transmitting in different frequencies.
Page 143 JD780A Series Analyzers can continue your measurement. The measurement settings can be saved and recalled as a file. You can also use JDViewer, PC application software to configure a measure setup, save as a file, and load the file on to the instrument. Procedure Press the MEASURE SETUP hot key.
Page 144: Setting Display
JD780A Series Analyzers Setting display After completion of the auto measurement, the screen menu changes to Trace/Display so that you can view the results in different forms. Procedure Toggle the Display soft key and select the display option: – Result: to view the result table. The Display Result menu becomes activated. –...
Page 145 JD780A Series Analyzers Press the # of Channels soft key. Enter a value by using the numeric keys. You can also use the rotary knob. Press the Enter soft key. Setting zoom position You can set the starting channel for the Zoom In Window. Procedure Press the TRACE/DISPLAY hard key.
Page 146: Frequency Scanner
JD780A Series Analyzers Measurement example Figure 48 Channel scanner measurement with GSM OTA signal analyzer Frequency scanner Setting frequency Procedure Press the FREQ/DIST hard key. To set the starting frequency to be scanned, complete the following steps: Press the Start Frequency soft key. Enter a value by using the numeric keys.
Page 147: Multipath Profile
JD780A Series Analyzers Enter a value by using the numeric keys. You can also use the rotary knob. Press the Enter soft key. Setting limit for OTA frequency scanner Procedure Press the LIMIT hot key. Press the Limit Line soft key to set a threshold for the limit line and Pass/Fail indication. Enter a value, and then press the dBm unit soft key.
Page 148: Modulation Analyzer
JD780A Series Analyzers Procedure Press the MEASURE SETUP hot key. Press the Detect Mode soft key, and then select the signal standard option: Auto, GSM, or EDGE. Auto is set by default. The instrument applies a mask automatically based on the selected mode.
Page 149 JD780A Series Analyzers Optional. To set the delay, complete the following steps: Press the Miscellaneous soft key. Press the Delay soft key to set the amount of delay in µs. Enter a value by using the numeric keys. You can also use the rotary knob. Press the µs soft key.
Page 150 JD780A Series Analyzers Measurement example Figure 51 Modulation analyzer measurement with GSM OTA signal analyzer Using GSM/GPRS/EDGE Signal Analyzer...
Page 151: Using Wcdma/Hspa+ Signal Analyzer
Using WCDMA/HSPA+ Signal Analyzer This chapter provides instructions for using the WCDMA/HSPA+ Signal Analyzer function (option 023) with the WCDMA/HSPA+ OTA Analyzer function (option 043). Topics discussed in this chapter are as follows:  Introduction ..........................152  Display overview ........................152 ...
Page 152: Introduction
JD780A Series Analyzers Introduction This WCDMA/HSPA+ Signal Analyzer can be used to test a WCDMA transmitter including HSDPA/HSPA+ signals to check the base station’s compliance with following standards documentation.  3GPP TS 25.104 Base Station radio transmission and reception  3GPP TS 25.141 Base Station (BS) conformance test ...
Page 153: Connecting A Cable
JD780A Series Analyzers Figure 52 WCDMA/HSPA+ signal analyzer measurement screen Connecting a cable Direct connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the power amplifier output port of BTS. Figure 53 Direct connection JD785A/JD786A JD788A Indirect connection Procedure...
Page 154: Over The Air (Ota)
JD780A Series Analyzers Figure 54 Indirect connection JD785A/JD786A JD788A CAUTION The maximum power for the Spectrum Analyzer RF In port is +25 dBm (0.316 W). If the input signal level to be measured is greater than +25 dBm, use a High Power Attenuator to prevent damage when you directly connect the signal to the instrument or connect the signal from the coupling port of a directional coupler.
Page 155: Selecting Measurement Mode
JD780A Series Analyzers Selecting measurement mode Procedure Press the MODE hard key. Press the Signal Analyzer soft key. Press the WCDMA soft key. The Spectrum mode is set by default. Press the MEASURE hot key, and then select the measurement mode option from the following choices: –...
Page 156: Setting Amplitude
JD780A Series Analyzers Select the band to be measured by using the rotary knob, the arrow keys, or the Page Up/Page Down soft keys. Press the Select soft key or the rotary knob to confirm the selection. Press the Channel Number soft key. Enter a value by using the numeric keys.
Page 157 JD780A Series Analyzers steps: Select Attenuation > Manual. Press the Attenuation Value soft key to set the level. Enter a value between 0 and 55 in fives by using the numeric keys. Press the dB soft key or the ENTER hard key. –...
Page 158: Setting Average
JD780A Series Analyzers When the external offset value is set at 40 dB in the Spectrum mode, the measurement result compensates 40 dB at both the Spectrum Analyzer and Signal Analyzer modes Procedure To set the external offset: Press the AMP/SCALE hard key. Toggle the External Offset soft key and select On.
Page 159: Setting External Clock
JD780A Series Analyzers Procedure Press the TRIGGER hot key. Select the trigger source option from the following choices: Internal, External, or GPS. Setting external clock To enhance the reliability of modulation analysis measurements the JD780A series must be synchronized with a base station. When an external clock is not supplied, the instrument works with its built-in internal high-accuracy time base and some measurement results may exhibit inaccurate values.
Page 160: Conducting Spectrum Measurements
JD780A Series Analyzers Table 13 External reference indicators Type Indicator Description The green INT icon indicates that the instrument uses the built-in Internal (green) internal time base. External The green EXT icon indicates that an external reference is connected (green) and locked and that the instrument uses the same reference clock as the signal source.
Page 161: Conducting Rf Measurements
JD780A Series Analyzers the active one now. Do one of the following: Select Trace Legend Clear current data and display with new Clear Write measurements Display the input signal’s maximum response only Max Hold (unlimited or for a certain amount of time) Display the input signal’s minimum response only Min Hold (unlimited or for a certain amount of time)
Page 162: Occupied Bandwidth
JD780A Series Analyzers 5 MHz, as per the 3GPP WCDMA technical specifications) and the power spectral density (PSD) in dBm/Hz. After configuring test parameters as described in the “Configuring test parameters” on page 155, your measurement result is displayed on the screen as like the following example, Figure 58. Figure 58 Channel power measurement with WCDMA/HSPA+ signal analyzer NOTE...
Page 163: Spectrum Emission Mask (Sem)
JD780A Series Analyzers Figure 59 Occupied bandwidth measurement with WCDMA/HSPA+ signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 167 for more information.
Page 164: Aclr
JD780A Series Analyzers Figure 60 SEM measurement with WCDMA/HSPA+ signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 167 for more information.
Page 165: Multi-Aclr
JD780A Series Analyzers NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 167 for more information. Multi-ACLR The Multi-ACLR measurement is used to perform multi-channel ACLR measurements with as many channels as possible.
Page 166: Spurious Emissions
JD780A Series Analyzers Figure 62 Multi-ACLR measurement with WCDMA/HSPA+ signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 167 for more information.
Page 167: Setting Limit For Rf Tests
JD780A Series Analyzers Toggle the Range soft key and select On to display the selected range in the result table or Off to hide it from the table. Toggle the Measure Type soft key between Examine and Full to select the measurement type. NOTE The Examine mode displays only the selected range while the Full mode lets the instrument automatically changes the selected range from one another.
Page 168: Conducting Modulation Measurements
JD780A Series Analyzers Procedure Press the LIMIT hot key. Press the RF Test Limits soft key. Select the test item(s) and set the limit(s) depending on your selected measurement mode: To set the limit for Select Channel power Channel Power High Limit Low Limit Occupied bandwidth...
Page 169: Code Domain Power
JD780A Series Analyzers Measurement example Figure 64 Constellation measurement with WCDMA/HSPA+ signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 180 for more information.
Page 170 JD780A Series Analyzers Toggle the S-CCPCH soft key between On and Off to enable or disable the S-CCPCH. Press the Spread Factor soft key, and then select the spread factor option: 4, 8, 16, 32, 64, 128, or 256. Press the Spread Code soft key to set the spread code. Enter a value by using the numeric keys.
Page 171 JD780A Series Analyzers 2) Full screen with constellation 3) Zoomed screen (Width 64) 4) Zoomed screen with constellation (Width 64) Using WCDMA/HSPA+ Signal Analyzer...
Page 172: Relative Code Domain Power
JD780A Series Analyzers NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 180 for more information. Setting display You can view .your measurement results in a different view option. Procedure Press the TRACE/DISPLAY hard key.
Page 173 JD780A Series Analyzers NOTE It is recommended that you select HSPA+ for RCDE testing. To set the S-CCPCH information of the system to be tested, complete the following steps: Press the S-CCPCH soft key. Toggle the S-CCPCH soft key between On and Off to enable or disable the S-CCPCH. Press the Spread Factor soft key, and then select the spread factor option: 4, 8, 16, 32, 64, 128, or 256.
Page 174: Codogram
JD780A Series Analyzers NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 180 for more information. Setting display You can view .your measurement results in a different view option. Procedure Press the TRACE/DISPLAY hard key.
Page 175 JD780A Series Analyzers Optional. Press the Detect Mode soft key, and then select the signal standard option: WCDMA, HSDPA, or HSPA+. HSDPA is set by default. To set the S-CCPCH information of the system to be tested, complete the following steps: Press the S-CCPCH soft key.
Page 176: Rcsi
JD780A Series Analyzers Measurement example Figure 67 Codogram in full view with WCDMA/HSPA+ signal analyzer Setting display You can view .your measurement results in a different view option. Procedure Press the TRACE/DISPLAY hard key. Toggle the View soft key and select the display option: –...
Page 177 JD780A Series Analyzers the file on to the instrument. Procedure Press the MEASURE SETUP hot key. Optional. To set the scramble code, complete the following steps: Toggle the Scramble soft key between Auto and Manual. Enter a value by using the numeric keys to set manually. Press the Enter soft key.
Page 178: Cdp Table
JD780A Series Analyzers Measurement example Figure 68 RCSI measurement with WCDMA/HSPA+ signal analyzer Setting display You can view .your measurement results in a different view option. Procedure Press the TRACE/DISPLAY hard key. Toggle the View soft key and select the display option: –...
Page 179 JD780A Series Analyzers Procedure Press the MEASURE SETUP hot key. Optional. To set the scramble code, complete the following steps: Toggle the Scramble soft key between Auto and Manual. Enter a value by using the numeric keys to set manually. Press the Enter soft key.
Page 180: Setting Limit For Modulation Tests
JD780A Series Analyzers Setting display If the CDP table spans over to the next page(s), you can change pages up and down to view .your measurement results. Procedure Press the TRACE/DISPLAY hard key. Select Page Up or Page Down as needed. Setting limit for modulation tests Procedure Press the LIMIT hot key.
Page 181: Setting Limit For Auto Measure
JD780A Series Analyzers Setting limit for auto measure You can set test limits for test item(s) in the auto measurement. Procedure Press the LIMIT hot key. Press the RF Test Limits soft key, and then enable test limits as desired. Press the Modulation Test Limits soft key, and then enable test limits as desired.
Page 182: Setting Display
JD780A Series Analyzers – Peak: The Auto Measure takes only the highest peak of all 20 measurements. – Negative Peak: The Auto Measure takes only the lowest peak of all 20 measurements. To set external offset, complete the following steps: Toggle the External Offset soft key and select On.
Page 183: Measurement Example
JD780A Series Analyzers Procedure Press the MEASURE SETUP hot key. Press the CCDF Length soft key to set the length of the CCDF. Enter a value between 1 and 100 by using the numeric keys. You can also use the rotary knob. Press the Enter soft key.
Page 184 JD780A Series Analyzers To select the standard channel, complete the following steps: Press the Channel Std soft key. The standard channel window appears. See “Appendix C – Band, frequency & channel standard” on page 571 for more information. Select the band to be measured by using the rotary knob, the arrow keys, or the Page Up/Page Down soft keys.
Page 185: Scramble Scanner
JD780A Series Analyzers Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings. See “Using save” on page 31 for more information. Measurement example Figure 71 Channel scanner measurement with WCDMA/HSPA+ OTA signal analyzer Scramble scanner The WCDMA/HSPA+ mobile receives signals from multiple base stations that all of these signals share the same spectrum and are present at the same time.
Page 186: Multipath Profile
JD780A Series Analyzers Multipath profile The Multipath Profile enables you to determine RF environmental conditions of testing area. It indicates the amount of power of the dominant pilot signal that is dispersed outside the main correlation peak due to multipath echoes that are expressed in dB. This value should be very small ideally.
Page 187 JD780A Series Analyzers To set the scramble code, complete the following steps: Toggle the Scramble soft key between Auto and Manual. Enter a value by using the numeric keys to set manually. Press the Enter soft key. Press the Detect Mode soft key, and then select the signal standard option: WCDMA, HSDPA, or HSPA+.
Page 188: Route Map
JD780A Series Analyzers Press the Multipath Power < soft key. Enter a value by using the numeric keys. Press the Enter soft key. NOTE Recommended value is one. Color of the multipath power indicator on the screen bases on this setting. Optional.
Page 189 JD780A Series Analyzers Configure test parameters as described in the “Configuring test parameters” on page 155. To load your map file, complete the following steps: Plug in your USB drive that has a floor map or .mcf file type created in JDMapCreator. NOTE The JDMapCreator converts and resizes any scanned floor plan or layout to fit onto your instrument’s display.
Page 190 JD780A Series Analyzers Enter a value, and then press the dBm soft key. You can also use the rotary knob. Press the Very Good soft key to set its threshold. Enter a value, and then press the dBm soft key. You can also use the rotary knob. Press the Good soft key to set its threshold.
Page 191 JD780A Series Analyzers 2) CPICH Ec/Io Controlling a map If you have loaded a sizable map that was created in JDMapCreator 1.2.0 or later, you can use the Map Control feature that enables you to zoom into the map and view a specific area of interest in detail. Procedure Press the TRACE/DISPLAY hard key.
Page 192 JD780A Series Analyzers – ASCII: .tab, .asc, and .clr files – BIL: .tab,.hdr, .bil, and .clr files NOTE The .tab file type is a geospatial vector data format used in many geographic information systems. The color file (.clr) is an optional file, but the image will be displayed as a grayscale image without it.
Page 193: Using Lte - Fdd Signal Analyzer
Using LTE - FDD Signal Analyzer This chapter provides instructions for using the LTE - FDD Signal Analyzer (option 028) and LTE- Advanced FDD Analyzer (option 030) with the LTE - FDD OTA Analyzer (option 048) and the LTE-FDD RAN Performance Indicator (option 014). Topics discussed in this chapter are as follows: ...
Page 194: Introduction
JD780A Series Analyzers Introduction The LTE (Long-Term Evolution) Signal Analyzer of the JD780A series performs power and spectrum measurements as well as modulation analysis to test the proper transmitter performance of FDD LTE systems. It performs conformance testing according to the following standards providing a simple Pass/Fail indication on each test.
Page 195: Display Overview
JD780A Series Analyzers  Power Statistics CCDF  Carrier Aggregation  Over The Air (OTA) Channel Scanner ID Scanner Multipath Profile Control Channel Datagram Route Map  RAN Performance Indicator Display overview Figure 77 provides descriptions for each segment of the measurement screen. Figure 77 LTE - FDD signal analyzer measurement screen Connecting a cable...
Page 196: Indirect Connection
JD780A Series Analyzers Figure 78 Direct connection JD785A/JD786A JD788A Indirect connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the monitor (test) port of BTS. Figure 79 Indirect connection JD785A/JD786A JD788A CAUTION The maximum power for the Spectrum Analyzer RF In port is +25 dBm (0.316 W). If the input signal level to be measured is greater than +25 dBm, use a High Power Attenuator to prevent damage when you directly connect the signal to the instrument or connect the signal from the coupling port of a directional coupler.
Page 197: Selecting Measurement Mode
JD780A Series Analyzers Figure 80 OTA connection JD785A/JD786A JD788A CAUTION If the input signal level to be measured is less than 0 dBm, set 0 dB attenuation or turn on the preamp to have better dynamic range for the OTA testing. Selecting measurement mode Procedure Press the MODE hard key.
Page 198: Configuring Test Parameters
JD780A Series Analyzers Configuring test parameters Setting frequency You can set the frequency with either frequency or channel number. If a frequency to be set matches to the frequency corresponding to the selected channel standard, the instrument calculates its channel number and updates the screen with it automatically.
Page 199 JD780A Series Analyzers Procedure To automatically set the reference and attenuation level: Press the AMP/SCALE hard key. Press the Auto Scale soft key. Each time you press this key, both of the Y-axis scale and input attenuation level change to be optimized with some margin.
Page 200: Setting Average
JD780A Series Analyzers Press the AMP/SCALE hard key. Select More (1/2) > Scale/Div. Enter a value between 1 and 20 by using the numeric keys. Press the dB soft key to complete the entry. Pre-amplifier You can turn the internal pre-amplifier on to correct and compensate for the gain of the preamp so that amplitude readings show the value at the input connector.
Page 201: Setting Sweep Mode
JD780A Series Analyzers Enter a value between 1 and 100 as needed by using the numeric keys. Press the Enter soft key. Setting sweep mode The default setting is Continue to sweep continuously for most on-going measurements. If you want to hold the measurement or get a single sweep, you can change the sweep mode.
Page 202: Conducting Spectrum Measurements
JD780A Series Analyzers Procedure Connect an external reference or a GPS antenna to the JD780A series. Press the SYSTEM hot key. Press the Freq Reference soft key, and then select the reference option: Internal, External 10 MHz, External 13 MHz, External 15 MHz, or GPS. Table 14 External reference indicators Type...
Page 203: Setting Trace
JD780A Series Analyzers Figure 82 Spectrum measurement screen with LTE - FDD signal analyzer Setting trace You can display up to six traces on the measurement chart simultaneously. Procedure Press the TRACE/DISPLAY hard key. Press the Select Trace soft key, and then select the trace number: T1, T2, T3, T4, T5, or T6. The legend shape of the selected trace changes from square to round to indicate that the trace is the active one now.
Page 204: Conducting Rf Measurements
JD780A Series Analyzers Optional. Press the More (1/2) > Trace Info soft key, and then select the trace number to view the trace’s parameter setting information stored at the time of the measurement or None to hide the information display. Optional.
Page 205: Occupied Bandwidth
JD780A Series Analyzers Measurement example Figure 83 Channel power measurement with LTE - FDD signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 211 for more information.
Page 206: Spectrum Emission Mask (Sem)
JD780A Series Analyzers Measurement example Figure 84 Occupied bandwidth measurement with LTE - FDD signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 211 for more information.
Page 207: Aclr
JD780A Series Analyzers Select the mask type option, from the following choices: – Wide Area BS Category A – Wide Area BS Category B – Local Area BS – Home BS Measurement example Figure 85 SEM measurement with LTE - FDD signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication.
Page 208: Multi-Aclr
JD780A Series Analyzers Measurement example Figure 86 ACLR measurement with LTE - FDD signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 211 for more information.
Page 209: Spurious Emissions
JD780A Series Analyzers Enter a value by using the numeric keys. You can also use the rotary knob. Select the unit: GHz, MHz, kHz, or Hz. – To set the channel number, complete the following steps: Toggle the Unit soft key and select Channel. NOTE Selecting Channel sets the standard channel to Band Global automatically so that you can set the Channel Number without choosing a standard channel band from the list.
Page 210 JD780A Series Analyzers Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 197, you can continue your measurement. Procedure Press the MEASURE SETUP hot key. To set up the range table and parameters, press the Range Table soft key and then complete the following steps: Press the Range soft key, and then select the range number between 1 and 20 to add as a new or change the existing settings.
Page 211: Setting Limit For Rf Tests
JD780A Series Analyzers Measurement example Figure 88 Spurious emissions measurement with LTE - FDD signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 211 for more information.
Page 212: Conducting Power Vs. Time (Frame) Measurements
JD780A Series Analyzers Conducting power vs. time (frame) measurements The Power vs. Time (Frame) measures the modulation envelope in the time domain, showing the power of each time slot in an LTE signal. Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 197, you can continue your measurement.
Page 213: Measurement Example
JD780A Series Analyzers Measurement example Power vs. time (frame) measurement with LTE – FDD signal analyzer Figure 89 Conducting modulation measurements Constellation The Constellation is used to observe some aspects of modulation accuracy and can reveal certain fault mechanisms such as I/Q amplitude imbalance or quadrature imbalance. It displays constellation diagram by modulation types.
Page 214 JD780A Series Analyzers – Auto: to let the instrument detect the Cell ID for the LTE signal automatically. – Manual: to set a specific Cell ID for the LTE signal manually in order to speed up the synchronization with a BTS. Optional.
Page 215: Data Channel
JD780A Series Analyzers Measurement example Figure 90 Constellation measurement with LTE - FDD signal analyzer Figure 91 Constellation measurement with LTE - FDD signal analyzer (MBMS On) NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication.
Page 216 JD780A Series Analyzers can continue your measurement. The measurement settings can be saved and recalled as a file. Procedure Press the MEASURE SETUP hot key. To set the nominal channel bandwidth to be measured, complete the following steps: Press the Bandwidth soft key. Select the bandwidth option: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, or 20 MHz.
Page 217 JD780A Series Analyzers – Press the PDSCH Modulation Type soft key, and then select the modulation type option: Auto, QPSK, 16 QAM, 64 QAM, E-TM3.3, E-TM3.2, E-TM3.1, E-TM2, E-TM1.2, and E- TM1.1. If two or more modulation types are used in a frame, select Auto. If the PDSCH uses the same modulation type in a frame or in a subframe, select a specific modulation type to get more accurate EVM.
Page 218: Control Channel
JD780A Series Analyzers NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 231 for more information. Using marker You can use the MARKER hard key to place a marker on a resource block and display the IQ diagram for the selected resource block.
Page 219 JD780A Series Analyzers Optional. Toggle the CFI soft key and select Auto or Manual as desired: – Auto: to let the instrument set the number of OFDM symbols used for transmitting PDCCHs in a subframe. – Manual: to set the number of OFDM symbols manually. The set of OFDM symbols that can be used for PDCCH in a subframe is given by 0, 2, 3 or 4 in 1.4 MHz bandwidth and 1, 2, or 3 in other bandwidths.
Page 220 JD780A Series Analyzers Measurement example Figure 94 Control channel measurement with LTE - FDD signal analyzer Figure 95 Control channel measurement with LTE - FDD signal analyzer (MBMS On) NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication.
Page 221: Subframe
JD780A Series Analyzers Procedure Press the MARKER hard key. Press the Channel soft key to select the channel to be displayed in the IQ diagram. The channel P-SS is selected by default. Turn the rotary knob to move the highlight from one to another in the channel summary table. Toggle the Marker View soft key between On and Off to display or dismiss the result of the selected channel.
Page 222 JD780A Series Analyzers – Combine: Testing on multiple antennas connected to your JD780A series with a 2x1 or 4x1 combiner or an antenna. Optional. Press the Miscellaneous soft key, and then do the following(s) as needed: – To select the number of antenna ports, toggle the MIMO soft key and select 2x2 or 4x4. This MIMO (Multiple Input Multiple Output) setting is activated only if the option 030 LTE- Advanced FDD is installed with a license number.
Page 223 JD780A Series Analyzers Measurement example Figure 96 Subframe measurement with LTE - FDD signal analyzer 1) Regular view 2) Chart view Using LTE - FDD Signal Analyzer...
Page 224: Frame
JD780A Series Analyzers Figure 97 Subframe measurement with LTE - FDD signal analyzer (MBMS On) NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 231 for more information.
Page 225 JD780A Series Analyzers Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 197, you can continue your measurement. The measurement settings can be saved and recalled as a file. Procedure Press the MEASURE SETUP hot key. To set the nominal channel bandwidth to be measured, complete the following steps: Press the Bandwidth soft key.
Page 226 JD780A Series Analyzers – To set the threshold for PDSCH, complete the following steps: Press the PDSCH Threshold soft key. Enter a value by using the numeric keys. Press the dB soft key. – To set the threshold for PDCCH, complete the following steps: Press the PDCCH Threshold soft key.
Page 227: Time Alignment Error
JD780A Series Analyzers Figure 99 Frame measurement with LTE - FDD signal analyzer (MBMS On) NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 231 for more information.
Page 228: Data Allocation Map
JD780A Series Analyzers – To assign a antenna port number automatically or manually, press the Antenna Port soft key and select the option: Auto, 0, 1, 2, and 3. If the option 030 LTE-Advanced FDD is not installed or if the MIMO is set to 2x2, the antenna ports 2 and 3 are disabled. –...
Page 229 JD780A Series Analyzers Press the Subframe No soft key. Enter a value by using the numeric keys. You can also use the rotary knob. NOTE For MBMS testing, this subframe number must be neither 0 nor 5 as these subframes 0 and 5 are not available for MBMS and it must be set to the MBMS transmitted channel’s subframe number.
Page 230 JD780A Series Analyzers Measurement example Figure 101 Data allocation map measurement with LTE - FDD signal analyzer Figure 102 Data allocation map measurement with LTE - FDD signal analyzer (MBMS On) NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication.
Page 231: Setting Limit For Modulation Tests
JD780A Series Analyzers Toggle the Marker View soft key between On and Off to display or dismiss the marker on the chart. To select the resource block number, complete the following steps: Press the RB Number soft key. Enter the resource block number to select by using the numeric keys. You can also use the rotary knob to move the marker side by side.
Page 232: Performing Auto Measurements
JD780A Series Analyzers Subframe power Power > Subframe Power High Limit Low Limit OFDM symbol power Power > OFDM Symbol Power High Limit Low Limit Frame average power Power > Frame Avg Power High Limit Low Limit Time alignment error for MIMO Time Alignment Error >...
Page 233 JD780A Series Analyzers Press the Total Power Dynamic soft key. Toggle the Test Limits soft key between On and Off to enable or disable the limit. Press the Low Limit soft key. Enter a value for the lower limit. Press the dBm unit soft key. To verify signal quality, press the Signal Quality soft key, and then do the following as needed: To set the limit for Select...
Page 234: Maintenance Test
JD780A Series Analyzers Press the dB soft key. To save your settings and results, go to SAVE/LOAD > Save and then perform functions as you desire. See “Using save” on page 31 for more information. Press the Run Test soft key to start to run a test. The Auto Measure Results window appears at the end of the test.
Page 235 JD780A Series Analyzers Procedure Press the MEASURE SETUP hot key. Toggle the Configuration soft key and select the configuration option: – Current: to let the instrumnet use current frequency (single carrier) and determine pass or fail based on the instrument’s limit settings in Auto Measure. –...
Page 236: Signal Performance Test
JD780A Series Analyzers Press the Run Test soft key to start to run a test. The Auto Measure Results window appears at the end of the test. To stop running the test, press the Abort soft key. To change the view on the screen during the test, press the Display and then select the view option from the following choices: –...
Page 237: Das Test
JD780A Series Analyzers Toggle the Beep soft key between On and Off to enable or disable the beep sound. Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings. See “Using save” on page 31 for more information. Setting measure setup After configuring test parameters as described in the “Configuring test parameters”...
Page 238 JD780A Series Analyzers Press the Settings soft key and then set the following; Press the Bandwidth soft key and then select the nominal channel bandwidth to be measured from the choices: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, and 20 MHz: Press the MIMO soft key, and then select the antenna number option: 2x2 or 4x4.
Page 239: Performing Power Statistics Ccdf Measurements
JD780A Series Analyzers Measurement Example Figure 103 DAS measurement with LTE - FDD signal analyzer Performing power statistics CCDF measurements The Power Statistics Complementary Cumulative Distribution Function (CCDF) measurement characterizes the power statistics of the input signal. It provides PAR (Peak to Average power Ratio) versus different probabilities.
Page 240: Measurement Example
JD780A Series Analyzers Measurement example Figure 104 CCDF measurement with LTE - FDD signal analyzer Performing carrier aggregation measurements Carrier aggregation enables a maximum of five multiple LTE carriers to be used together in order to provide high data rate required for LTE-Advanced. Component carriers to be aggregated can be intra- band contiguous, intra-band non-contiguous, or inter-band.
Page 241: Setting Display
JD780A Series Analyzers – Center Frequency, Channel, Bandwidth, Cell ID, CFI, PHICH Ng, Antenna Port, MBMS On/Off, Cyclic Prefix, and PDSCH Modulation Type To set more component carriers, repeat the steps c-f. Press the MEASURE SETUP hot key again Toggle the EVM Detection Mode soft key and select Single or Combine as desired: –...
Page 242: Measurement Example
JD780A Series Analyzers Measurement example Figure 105 Carrier aggregation measurement with LTE - FDD signal analyzer (MA) Figure 106 Carrier aggregation measurement with LTE - FDD signal analyzer (SA) NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication.
Page 243: Conducting Lte - Fdd Ota Measurements
JD780A Series Analyzers Toggle the IQ Diagram soft key between On and Off to display or dismiss data on the IQ diagram for each component carrier. Press the Channel soft key to select the channel to be displayed on the IQ diagram. Use the rotary knob to move and select an item under EVM.
Page 244 JD780A Series Analyzers To set the frequencies to be scanned: Press the FREQ/DIST hard key. Toggle the Unit soft key and select Freq. Press the Index soft key, and then enter an index number between one and six by turning the rotary knob or using the numeric keys.
Page 245: Id Scanner
JD780A Series Analyzers ID scanner The LTE mobile receives signals from multiple base stations that all of these signals share the same spectrum and are present at the same time. Each base station has unique scrambling code assigned to the particular base station and it differentiates its signal from other base stations in the area. The ID Scanner shows key parameters such as RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality) that predict the downlink coverage quickly.
Page 246: Multipath Profile
JD780A Series Analyzers Measurement example Figure 108 ID scanner measurement with LTE - FDD OTA signal analyzer Multipath profile The Multipath Profile enables you to determine RF environmental conditions of testing area. It indicates the amount of power of the dominant pilot signal that is dispersed outside the main correlation peak due to multipath echoes that are expressed in dB.
Page 247: Control Channel
JD780A Series Analyzers 2x2 by default. A 2x1 or 4x1 RF combiner is also required to able to test on MIMO channels. – To select the cyclic prefix, toggle the Cyclic Prefix soft key and select Normal or Extended. See “Appendix E – Cyclic prefix table” on page 575 for OFDM parameter details by different bandwidth.
Page 248 JD780A Series Analyzers Select the bandwidth option: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, or 20 MHz. To select the subframe number to be measured, complete the following steps: Press the Subframe No soft key. Enter a value by using the numeric keys. You can also use the rotary knob. NOTE For MBMS testing, this subframe number must be neither 0 nor 5 as these subframes 0 and 5 are not available for MBMS and it must be set to the MBMS transmitted channel’s...
Page 249: Datagram
JD780A Series Analyzers Frequency error Frequency Error High Limit Low Limit Time error Time Error High Limit Low Limit Time alignment error Time Alignment Error High Limit Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings. See “Using save”...
Page 250 JD780A Series Analyzers can continue your measurement. The measurement settings can be saved and recalled as a file. You can also use JDViewer, PC application software to configure a measure setup, save as a file, and load the file on to the instrument. Procedure Press the MEASURE SETUP hot key.
Page 251: Route Map
JD780A Series Analyzers Measurement example Figure 111 Datagram measurement with LTE - FDD signal analyzer Route map The JD780A Series provides the Route Map function that allows you to collect data of points in an indoor or outdoor environment and track the received signals and coverage of RF transmitters by plotting data real time directly on top of a loaded floor plan or a map.
Page 252 JD780A Series Analyzers Press the Plot Point soft key, and then select the plot point option from the following choices: – To collect data/plot points automatically as you move around in a vehicle or outside, press the GPS soft key and then toggle the Screen Mode soft key between Map and Full. NOTE With the Map setting, you can view only the collected points that can be seen within the boundary of the loaded map.
Page 253 JD780A Series Analyzers S-SS Power S-SS Power Excellent, Very Good, Good, Fair, Poor (dBm) S-SS Ec/Io S-SS Ec/Io Good, Fair, Poor (dB) Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings. See “Using save” on page 31 for more information. Measurement example Figure 112 Route map measurement with LTE - FDD OTA signal analyzer 1) RSRP...
Page 254 JD780A Series Analyzers 3) RS-SINR 4) S-SS RSSI 5) P-SS Power Using LTE - FDD Signal Analyzer...
Page 255 JD780A Series Analyzers 6) S-SS Power 7) S-SS Ec/Io Controlling a map If you have loaded a sizable map that was created in JDMapCreator 1.2.0 or later, you can use the Map Control feature that enables you to zoom into the map and view a specific area of interest in detail. Procedure Press the TRACE/DISPLAY hard key.
Page 256 JD780A Series Analyzers area of interest. Press the center of the rotary knob to zoom into the selected area. You can also press the Zoom to soft key again to zoom into the selected area. – To zoom into the center or zoom out from the center, complete the following steps: Toggle the Zoom to soft key and select Center.
Page 257: Performing Ran Performance Testing
JD780A Series Analyzers Figure 113 Raster image overlaid on the route map in LTE-FDD OTA signal analyzer Performing RAN performance testing The JD780A series provides the optional feature that lets you conduct correlated uplink and downlink testing with your instrument connected to your mobile device via Bluetooth. The RANAdvisor TrueSite application installed on your smartphone collects data and transfers uplink data based on your parameter settings and then your instrument consolidates the data into the measurement results and displays them as performance indicators.
Page 258: Setting Parameters On Ranadvisor Truesite Tm
JD780A Series Analyzers Highlight your mobile device from the list by touching on the screen. Press the Pair soft key. The pairing dialog box appears on your smartphone. On your smartphone, enter 0000 and then tap the OK button. If pairing is successful, the status of your device on the list changes to “Paired”. Make sure to set your smartphone as a slave by completing the following steps: On your smartphone, open the RANAdvisor TrueSite icon.
Page 259: Measurement Example
JD780A Series Analyzers RANAdvisor TrueSite so that you can view consolidated measurement results on your instrument and save results as a file. Procedure Make sure to have the RANAdvisor TrueSite app opened on your device. Press the MEASURE SETUP hot key on your instrument. Press the Bluetooth Connect soft key.
Page 260 JD780A Series Analyzers To set the level for Select Data throughput Data Throughput Good, Bad (kbps) Channel quality indicator Good, Bad Modulation type Modulation Type (On/Off only) To check the performance of eNodeB, do the following as needed: To set the level for Select Reference signal received power RSRP...
Page 261: Using Lte - Tdd Signal Analyzer
Using LTE - TDD Signal Analyzer This chapter provides instructions for using the LTE - TDD Signal Analyzer (option 029) and LTE- Advanced TDD Analyzer (option 031) with the LTE - TDD OTA Analyzer (option 049) and the LTE-TDD RAN Performance Indicator (option 015). Topics discussed in this chapter are as follows: ...
Page 262: Introduction
JD780A Series Analyzers Introduction The LTE (Long-Term Evolution) Signal Analyzer of the JD780A series performs power and spectrum measurements as well as modulation analysis to test the proper transmitter performance of TDD LTE systems. It performs conformance testing according to the following standards providing a simple Pass/Fail indication on each test.
Page 263: Display Overview
JD780A Series Analyzers  Over The Air (OTA) Channel Scanner ID Scanner Multipath Profile Control Channel Datagram Route Map  RAN Performance Indicator Display overview Figure 115 provides descriptions for each segment of the measurement screen. Figure 115 LTE - TDD signal analyzer measurement screen Connecting a cable Direct connection Procedure...
Page 264: Indirect Connection
JD780A Series Analyzers Figure 116 Direct connection JD785A/JD786A JD788A Indirect connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the monitor (test) port of BTS. Figure 117 Indirect connection JD785A/JD786A JD788A CAUTION The maximum power for the Spectrum Analyzer RF In port is +25 dBm (0.316 W). If the input signal level to be measured is greater than +25 dBm, use a High Power Attenuator to prevent damage when you directly connect the signal to the instrument or connect the signal from the coupling port of a directional coupler.
Page 265: Selecting Measurement Mode
JD780A Series Analyzers Figure 118 OTA connection JD785A/JD786A JD788A CAUTION If the input signal level to be measured is less than 0 dBm, set 0 dB attenuation or turn on the preamp to have better dynamic range for the OTA testing. Selecting measurement mode Procedure Press the MODE hard key.
Page 266: Configuring Test Parameters
JD780A Series Analyzers Configuring test parameters Setting frequency You can set the frequency with either frequency or channel number. If a frequency to be set matches to the frequency corresponding to the selected channel standard, the instrument calculates its channel number and updates the screen with it automatically.
Page 267 JD780A Series Analyzers Procedure To automatically set the reference and attenuation level: Press the AMP/SCALE hard key. Press the Auto Scale soft key. Each time you press this key, both of the Y-axis scale and input attenuation level change to be optimized with some margin.
Page 268: Setting Average
JD780A Series Analyzers Procedure To set the scale per division: Press the AMP/SCALE hard key. Select More (1/2) > Scale/Div. Enter a value between 1 and 20 by using the numeric keys. Press the dB soft key to complete the entry. Pre-amplifier You can turn the internal pre-amplifier on to correct and compensate for the gain of the preamp so that amplitude readings show the value at the input connector.
Page 269: Setting Sweep Mode
JD780A Series Analyzers Procedure Press the BW/AVG hard key. Press the Average soft key. Enter a value between 1 and 100 as needed by using the numeric keys. Press the Enter soft key. Setting sweep mode The default setting is Continue to sweep continuously for most on-going measurements. If you want to hold the measurement or get a single sweep, you can change the sweep mode.
Page 270: Conducting Spectrum Measurements
JD780A Series Analyzers Procedure Connect an external reference or a GPS antenna to the JD780A series. Press the SYSTEM hot key. Press the Freq Reference soft key, and then select the reference option: Internal, External 10 MHz, External 13 MHz, External 15 MHz, or GPS. Table 15 External reference indicators Type...
Page 271: Setting Trace
JD780A Series Analyzers Figure 120 Spectrum measurement screen with LTE - TDD signal analyzer Setting trace You can display up to six traces on the measurement chart simultaneously. Procedure Press the TRACE/DISPLAY hard key. Press the Select Trace soft key, and then select the trace number: T1, T2, T3, T4, T5, or T6. The legend shape of the selected trace changes from square to round to indicate that the trace is the active one now.
Page 272: Conducting Rf Measurements
JD780A Series Analyzers Optional. Press the More (1/2) > Trace Info soft key, and then select the trace number to view the trace’s parameter setting information stored at the time of the measurement or None to hide the information display. Optional.
Page 273: Occupied Bandwidth
JD780A Series Analyzers Measurement example Figure 121 Channel power measurement with LTE - TDD signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 279 for more information.
Page 274: Spectrum Emission Mask (Sem)
JD780A Series Analyzers Measurement example Figure 122 Occupied bandwidth measurement with LTE - TDD signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 279 for more information.
Page 275: Aclr
JD780A Series Analyzers Press the Mask Type soft key. Select the mask type option, from the following choices: – Wide Area BS Category A – Wide Area BS Category B – Local Area BS – Home BS To select the subframe number to be measured, complete the following steps: Press the Subframe No soft key.
Page 276: Multi-Aclr
JD780A Series Analyzers can continue your measurement. Procedure Press the MEASURE SETUP hot key. To set the nominal channel bandwidth to be measured, complete the following steps: Press the Bandwidth soft key. Select the bandwidth option: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, or 20 MHz. To select the subframe number to be measured, complete the following steps: Press the Subframe No soft key.
Page 277 JD780A Series Analyzers Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 265, you can continue your measurement. Procedure Press the MEASURE SETUP hot key. To set the nominal channel bandwidth to be measured, complete the following steps: Press the Bandwidth soft key.
Page 278: Spurious Emissions
JD780A Series Analyzers Measurement example Figure 125 Multi-ACLR measurement with LTE - TDD signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 279 for more information.
Page 279: Setting Limit For Rf Tests
JD780A Series Analyzers – Select More (1/2) > Attenuation, and then specify an value in the multiple of five. – Select More (1/2) > RBW, and then specify a RBW value. – Select More (1/2) > VBW, and then specify a VBW value. Press the PREV hard key.
Page 280: Conducting Power Vs. Time Measurements
JD780A Series Analyzers Procedure Press the LIMIT hot key. Press the RF Test Limits soft key. Select the test item(s) and set the limit(s) depending on your selected measurement mode: To set the limit for Select Channel power Channel Power High Limit Low Limit Occupied bandwidth...
Page 281 JD780A Series Analyzers Press the Slot No soft key. Enter a value by using the numeric keys. You can also use the rotary knob. Press the Enter soft key. Toggle the Cell ID soft key and select Auto or Manual as desired: –...
Page 282: Power Vs. Time (Frame)
JD780A Series Analyzers Measurement example Figure 127 Power vs. time (slot) measurement with LTE – TDD signal analyzer Off to on On to off Power vs. time (frame) The Power vs. Time (Frame) measures the modulation envelope in the time domain, showing the power of each time slot in an LTE signal.
Page 283 JD780A Series Analyzers To set the nominal channel bandwidth to be measured, complete the following steps: Press the Bandwidth soft key. Select the bandwidth option: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, or 20 MHz. To select the subframe number to be measured, complete the following steps: Press the Subframe No soft key.
Page 284: Conducting Modulation Measurements
JD780A Series Analyzers Measurement example Figure 128 Power vs. time (frame) measurement with LTE – TDD signal analyzer Conducting modulation measurements Constellation The Constellation is used to observe some aspects of modulation accuracy and can reveal certain fault mechanisms such as I/Q amplitude imbalance or quadrature imbalance. It displays constellation diagram by modulation types.
Page 285 JD780A Series Analyzers Optional. Toggle the Cell ID soft key and select Auto or Manual as desired: – Auto: to let the instrument detect the Cell ID for the LTE signal automatically. – Manual: to set a specific Cell ID for the LTE signal manually in order to speed up the synchronization with a BTS.
Page 286: Data Channel
JD780A Series Analyzers Measurement example Figure 129 Constellation measurement with LTE - TDD signal analyzer Figure 130 Constellation measurement with LTE - TDD signal analyzer (MBMS On) NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication.
Page 287 JD780A Series Analyzers Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 265, you can continue your measurement. The measurement settings can be saved and recalled as a file. You can also use JDViewer, PC application software to configure a measure setup, save as a file, and load the file on to the instrument.
Page 288 JD780A Series Analyzers installed or if the MIMO is set to 2x2, the antenna ports 2 and 3 are disabled. – To turn the Multimedia Broadcast Multicast Service (MBMS) feature on or off, toggle the MBMS soft key and select On or Off. For proper MBMS testing, you need to set the Subframe No with the same PMCH subframe number.
Page 289: Control Channel
JD780A Series Analyzers Figure 132 Data channel measurement with LTE - TDD signal analyzer (MBMS On) NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 300 for more information.
Page 290 JD780A Series Analyzers Procedure Press the MEASURE SETUP hot key. To set the nominal channel bandwidth to be measured, complete the following steps: Press the Bandwidth soft key. Select the bandwidth option: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, or 20 MHz. To select the subframe number to be measured, complete the following steps: Press the Subframe No soft key.
Page 291 JD780A Series Analyzers Press the Delay soft key to set the amount of delay in µs. Enter a value by using the numeric keys. You can also use the rotary knob. Press the µs soft key. NOTE The Delay setting is used only when there is a time offset in the signals to be measured. –...
Page 292: Subframe
JD780A Series Analyzers Figure 134 Control channel measurement with LTE - TDD signal analyzer (MBMS On) NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 300 for more information.
Page 293 JD780A Series Analyzers Press the MEASURE SETUP hot key. To set the nominal channel bandwidth to be measured, complete the following steps: Press the Bandwidth soft key. Select the bandwidth option: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, or 20 MHz. To select the subframe number to be measured, complete the following steps: Press the Subframe No soft key.
Page 294 JD780A Series Analyzers Press the Delay soft key to set the amount of delay in µs. Enter a value by using the numeric keys. You can also use the rotary knob. Press the µs soft key. NOTE The Delay setting is used only when there is a time offset in the signals to be measured. –...
Page 295 JD780A Series Analyzers 2) Chart view Figure 136 Subframe measurement with LTE - TDD signal analyzer (MBMS On) NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 300 for more information.
Page 296: Time Alignment Error
JD780A Series Analyzers Using marker If you turn the Chart view on, you can use the MARKER hard key to place the marker at a specific symbol. Procedure Press the MARKER hard key. Toggle the Marker View soft key between On and Off to display or dismiss the marker on the chart.
Page 297: Data Allocation Map
JD780A Series Analyzers Press the µs soft key. NOTE The Delay setting is used only when there is a time offset in the signals to be measured. – To select the cyclic prefix, toggle the Cyclic Prefix soft key and select Normal or Extended.
Page 298 JD780A Series Analyzers To select the subframe number to be measured, complete the following steps: Press the Subframe No soft key. Enter a value by using the numeric keys. You can also use the rotary knob. NOTE For MBMS testing, this subframe number must be neither 0 nor 5 as these subframes 0 and 5 are not available for MBMS and it must be set to the MBMS transmitted channel’s subframe number.
Page 299 JD780A Series Analyzers Measurement example Figure 138 Data allocation map measurement with LTE - TDD signal analyzer Figure 139 Data allocation map measurement with LTE - TDD signal analyzer (MBMS On) NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication.
Page 300: Setting Limit For Modulation Tests
JD780A Series Analyzers Press the Display Channel soft key. Select the display mode from the choice: PDSCH, PMCH, and Both. Using marker You can use the MARKER hard key to place the marker at a specific resource block and subframe. Procedure Press the MARKER hard key.
Page 301: Performing Auto Measurements
JD780A Series Analyzers S-SS error vector magnitude EVM > S-SS EVM High Limit Downlink RS power Power > DL RS Power High Limit Low Limit P-SS power Power > P-SS Power High Limit Low Limit S-SS power Power > S-SS Power High Limit Low Limit PBCH power...
Page 302 JD780A Series Analyzers Press the High Limit soft key. Enter a value for the upper limit. Press the dBm unit soft key. Press the Low Limit soft key. Enter a value for the lower limit. Press the dBm unit soft key. To set the limit for total power dynamic, complete the following steps: Press the Total Power Dynamic soft key.
Page 303: Maintenance Test
JD780A Series Analyzers Setting measure setup After setting frequency as described in the “Configuring test parameters” on page 265, you can continue your measurement. Procedure Press the MEASURE SETUP hot key. Press the Bandwidth soft key. Select the nominal channel bandwidth to be measured, from the following choices: –...
Page 304 JD780A Series Analyzers Optional. You can enable alarm sound that goes off if the measurement falls outside of the limit. Toggle the Beep soft key between On and Off to enable or disable the beep sound. Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings. See “Using save”...
Page 305 JD780A Series Analyzers This MIMO (Multiple Input Multiple Output) setting is activated only if the option 031 LTE- Advanced TDD is installed with a license number. If not, the instrument sets this option to 2x2 by default. A 2x1 or 4x1 RF combiner is also required to able to test on MIMO channels.
Page 306: Signal Performance Test
JD780A Series Analyzers Signal performance test Unlike the other auto measurement tests, the Signal Performance Test runs measurements continuously. Setting limit for signal performance test You can set test limits for test item(s) in the auto measurement. Procedure Press the LIMIT hot key. Press the RF Test Limits >...
Page 307: Das Test
JD780A Series Analyzers To save your settings and results, go to SAVE/LOAD > Save and then perform functions as you desire. See “Using save” on page 31 for more information. DAS test The Distributed Antenna System (DAS) testing enables you to check the degradation of performance in the signal transmission from a radio band to antennas distributed from it.
Page 308: Performing Power Statistics Ccdf Measurements
JD780A Series Analyzers Optional. To change the settings such as External Offset, press the Settings and then change the settings as needed. Press the Continue soft key. The instrument runs the testing on Ant 1. The Ant 1 tab appears with the updated result table when the test is done.
Page 309: Measurement Example
JD780A Series Analyzers Procedure Press the MEASURE SETUP hot key. Press the CCDF Length soft key to set the length of the CCDF. Enter a value between 1 and 100 by using the numeric keys. You can also use the rotary knob. Press the Enter soft key.
Page 310: Setting Display
JD780A Series Analyzers The component carrier configuration window appears. Press the CA Range soft key. Enter the number of the component carrier to be set between 1 and 5. Press the Enter soft key. Toggle the Turn On soft key and then select On to set parameters and view the results for the selected component carrier on the screen or Off to turn it off.
Page 311: Measurement Example
JD780A Series Analyzers Measurement example Figure 142 Carrier aggregation measurement with LTE - TDD signal analyzer (MA) Figure 143 Carrier aggregation measurement with LTE - TDD signal analyzer (SA) NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication.
Page 312: Conducting Lte - Tdd Ota Measurements
JD780A Series Analyzers Toggle the Marker View soft key between On and Off to display or dismiss the marker. Press the Channel soft key to select the channel to be displayed on the IQ diagram. Use the rotary knob to move and select an item under EVM. Conducting LTE - TDD OTA measurements The TDD LTE Over The Air (OTA) measurement has Channel Scanner, ID Scanner, Multipath Profile, Datagram, and Control Channel screens.
Page 313 JD780A Series Analyzers Press the FREQ/DIST hard key. Toggle the Unit soft key and select Freq. Press the Index soft key, and then enter an index number between one and six by turning the rotary knob or using the numeric keys. To set the center frequency for the selected index, complete the following steps: Press the Center Frequency soft key.
Page 314: Id Scanner
JD780A Series Analyzers ID scanner The LTE mobile receives signals from multiple base stations that all of these signals share the same spectrum and are present at the same time. Each base station has unique scrambling code assigned to the particular base station and it differentiates its signal from other base stations in the area. The ID Scanner shows key parameters such as RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality) that predict the downlink coverage quickly.
Page 315: Multipath Profile
JD780A Series Analyzers Measurement example Figure 145 ID scanner measurement with LTE - TDD OTA signal analyzer Multipath profile The Multipath Profile enables you to determine RF environmental conditions of testing area. It indicates the amount of power of the dominant pilot signal that is dispersed outside the main correlation peak due to multipath echoes that are expressed in dB.
Page 316: Control Channel
JD780A Series Analyzers channels. – To select the cyclic prefix, toggle the Cyclic Prefix soft key and select Normal or Extended. See “Appendix E – Cyclic prefix table” on page 575 for OFDM parameter details by different bandwidth. Optional. Go to SAVE/LOAD > Save, and then select the save option from the choices available for your measurement mode.
Page 317 JD780A Series Analyzers To select the subframe number to be measured, complete the following steps: Press the Subframe No soft key. Enter a value by using the numeric keys. You can also use the rotary knob. NOTE For MBMS testing, this subframe number must be neither 0 nor 5 as these subframes 0 and 5 are not available for MBMS and it must be set to the MBMS transmitted channel’s subframe number.
Page 318: Datagram
JD780A Series Analyzers Time error Time Error High Limit Low Limit Time alignment error Time Alignment Error High Limit Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings. See “Using save” on page 31 for more information. Setting display You can use the TRACE/DISPLAY hard key to select the display option.
Page 319 JD780A Series Analyzers the file on to the instrument. Procedure Press the MEASURE SETUP hot key. To set the nominal channel bandwidth to be measured, complete the following steps: Press the Bandwidth soft key. Select the bandwidth option: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, or 20 MHz. To select the subframe number to be measured, complete the following steps: Press the Subframe No soft key.
Page 320: Route Map
JD780A Series Analyzers Measurement example Figure 148 Datagram measurement with LTE - TDD signal analyzer Route map The JD780A Series provides the Route Map function that allows you to collect data of points in an indoor or outdoor environment and track the received signals and coverage of RF transmitters by plotting data real time directly on top of a loaded floor plan or a map.
Page 321 JD780A Series Analyzers – To collect data/plot points automatically as you move around in a vehicle or outside, press the GPS soft key and then toggle the Screen Mode soft key between Map and Full. NOTE With the Map setting, you can view only the collected points that can be seen within the boundary of the loaded map.
Page 322 JD780A Series Analyzers S-SS Ec/Io S-SS Ec/Io Good, Fair, Poor (dB) Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings. See “Using save” on page 31 for more information. Measurement example Figure 149 Route map measurement with LTE - TDD OTA signal analyzer 1) RSRP 2) RSRQ Using LTE –...
Page 323 JD780A Series Analyzers 3) RS-SINR 4) S-SS RSSI 5) P-SS Power Using LTE – TDD Signal Analyzer...
Page 324 JD780A Series Analyzers 6) S-SS Power 7) S-SS Ec/Io Controlling a map If you have loaded a sizable map that was created in JDMapCreator 1.2.0 or later, you can use the Map Control feature that enables you to zoom into the map and view a specific area of interest in detail. Procedure Press the TRACE/DISPLAY hard key.
Page 325 JD780A Series Analyzers area of interest. Press the center of the rotary knob to zoom into the selected area. You can also press the Zoom to soft key again to zoom into the selected area. – To zoom into the center or zoom out from the center, complete the following steps: Toggle the Zoom to soft key and select Center.
Page 326: Performing Ran Performance Testing
JD780A Series Analyzers Figure 150 Raster image overlaid on the route map in LTE-TDD OTA signal analyzer Performing RAN performance testing The JD780A series provides the optional feature that lets you conduct correlated uplink and downlink testing with your instrument connected to your mobile device via Bluetooth. The RANAdvisor TrueSite application installed on your smartphone collects data and transfers uplink data based on your parameter settings and then your instrument consolidates the data into the measurement results and displays them as performance indicators.
Page 327: Setting Parameters On Ranadvisor Truesite Tm
JD780A Series Analyzers Highlight your mobile device from the list by touching on the screen. Press the Pair soft key. The pairing dialog box appears on your smartphone. On your smartphone, enter 0000 and then tap the OK button. If pairing is successful, the status of your device on the list changes to “Paired”. Make sure to set your smartphone as a slave by completing the following steps: On your smartphone, open the RANAdvisor TrueSite icon.
Page 328: Measurement Example
JD780A Series Analyzers RANAdvisor TrueSite so that you can view consolidated measurement results on your instrument and save results as a file. Procedure Make sure to have the RANAdvisor TrueSite app opened on your device. Press the MEASURE SETUP hot key on your instrument. Press the Bluetooth Connect soft key.
Page 329 JD780A Series Analyzers To analyze the quality of user experience, do the following as needed: To set the level for Select Data throughput Data Throughput Good, Bad (kbps) Channel quality indicator Good, Bad Modulation type Modulation Type (On/Off only) To check the performance of eNodeB, do the following as needed: To set the level for Select Reference signal received power...
Page 330: Using Cdma Signal Analyzer
Using CDMA Signal Analyzer This chapter provides instructions for using the CDMA Signal Analyzer function (option 020) with the CDMA OTA Analyzer function (option 040). Topics discussed in this chapter are as follows:  Introduction ..........................331  Display overview ........................332 ...
Page 331: Introduction
JD780A Series Analyzers Introduction This CDMA Signal Analyzer can be used to test a CDMA transmitter including cdmaOne and cdma2000 signals to check the base station’s compliance with following standards documentation.  3GPP2 C.S0002 Physical Layer Standard for cdma2000 Spread Spectrum Systems ...
Page 332: Display Overview
JD780A Series Analyzers Display overview Figure 152 provides descriptions for each segment of the measurement screen. Figure 152 CDMA signal analyzer measurement screen Connecting a cable Direct connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the Power amplifier output port of BTS.
Page 333: Indirect Connection
JD780A Series Analyzers Indirect connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the monitor (test) port of BTS. Figure 154 Indirect connection JD785A/JD786A JD788A CAUTION The maximum power for the Spectrum Analyzer RF In port is +25 dBm (0.316 W). If the input signal level to be measured is greater than +25 dBm, use a High Power Attenuator to prevent damage when you directly connect the signal to the instrument or connect the signal from the coupling port of a directional coupler.
Page 334: Selecting Measurement Mode
JD780A Series Analyzers Figure 155 OTA connection JD785A/JD786A JD788A Selecting measurement mode Procedure Press the MODE hard key. Press the Signal Analyzer soft key. Press the CDMA soft key. The Spectrum mode is set by default. Press the MEASURE hot key, and then select the measurement mode option from the following choices: –...
Page 335: Setting Amplitude
JD780A Series Analyzers Press the Center Frequency soft key. Enter a value by using the numeric keys. You can also use the rotary knob. Select the unit: GHz, MHz, kHz, or Hz. Optional. To define the amount of frequency increment for the rotary knob, complete the following steps: Press the Frequency Step soft key.
Page 336 JD780A Series Analyzers Press the AMP/SCALE hard key. To set the maximum reference value on the Y-axis manually, complete the following steps: Press the Reference Level soft key. Enter a value by using the numeric keys or the rotary knob with 10 dB increments. Press the unit soft key or the ENTER hard key.
Page 337: Setting Average
JD780A Series Analyzers Pre-amplifier You can turn the internal pre-amplifier on to correct and compensate for the gain of the preamp so that amplitude readings show the value at the input connector. Procedure Press the AMP/SCALE hard key. Toggle the Preamp soft key and select On or Off as needed. NOTE You can turn the Preamp on when the input attenuation range is from 0 dB to 10 dB.
Page 338: Setting Trigger Source
JD780A Series Analyzers hold the measurement or get a single sweep, you can change the sweep mode. Procedure To select the single sweep mode: Press the SWEEP hot key. Toggle the Sweep Mode soft key and select Single. You can also use the HOLD hot key. The letter HOLD in red appears and the sweeping is paused.
Page 339: Conducting Spectrum Measurements
JD780A Series Analyzers Figure 156 Connection ports for external reference clock Procedure Connect an external reference or a GPS antenna to the JD780A series. Press the SYSTEM hot key. Press the Freq Reference soft key, and then select the reference option: Internal, External 10 MHz, External 13 MHz, External 15 MHz, or GPS.
Page 340: Setting Trace
JD780A Series Analyzers Figure 157 Spectrum measurement screen with CDMA signal analyzer Setting trace You can display up to six traces on the measurement chart simultaneously. Procedure Press the TRACE/DISPLAY hard key. Press the Select Trace soft key, and then select the trace number: T1, T2, T3, T4, T5, or T6. The legend shape of the selected trace changes from square to round to indicate that the trace is the active one now.
Page 341: Conducting Rf Measurements
JD780A Series Analyzers To select the detection option, press the More (1/2) > Detectors, and then do one of the following: To display Select Random noise better than the peak without missing signals Normal The highest value in each data point Peak The root mean squared average power across the spectrum The lowest value in each data point...
Page 342: Occupied Bandwidth
JD780A Series Analyzers Figure 158 Channel power measurement with CDMA signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 347 for more information.
Page 343: Spectrum Emission Mask (Sem)
JD780A Series Analyzers NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 347 for more information. Spectrum emission mask (SEM) The Spectrum Emission Mask (SEM) measurement required by 3GPP2 specifications encompasses different power limits and different measurement bandwidths (resolution bandwidths) at various frequency offsets.
Page 344: Multi-Acpr
JD780A Series Analyzers After configuring test parameters as described in the “Configuring test parameters” on page 334, your measurement result is displayed on the screen as like the following example, Figure 161. Figure 161 ACPR measurement with CDMA signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication.
Page 345: Spurious Emissions
JD780A Series Analyzers Toggle the Unit soft key and select Channel. To select the standard channel, press the Channel Std soft key and then select the band to be measured. Press the Lowest Channel soft key to set the starting channel. Enter a value by using the numeric keys.
Page 346 JD780A Series Analyzers To set up the range table and parameters, press the Range Table soft key and then complete the following steps: Press the Range soft key, and then select the range number between 1 and 20 to add as a new or change the existing settings.
Page 347: Setting Limit For Rf Tests
JD780A Series Analyzers Figure 163 Spurious emissions measurement with CDMA signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 347 for more information.
Page 348: Conducting Modulation Measurements
JD780A Series Analyzers Conducting modulation measurements In order to make accurate measurements of time offset and PN, you must connect an external trigger before making a modulation measurement. Constellation The Constellation is used to observe some aspects of modulation accuracy and can reveal certain fault mechanisms such as I/Q amplitude imbalance or quadrature imbalance.
Page 349: Code Domain Power
JD780A Series Analyzers Measurement example Figure 164 Constellation measurement with CDMA signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 355 for more information.
Page 350 JD780A Series Analyzers Press the Enter soft key. To set the threshold between Auto and Manual, complete the following steps: Press the Threshold soft key. Its default setting is -27 dB. Enter a value between -50 and zero by using the numeric keys to change the value in the Manual mode.
Page 351: Codogram
JD780A Series Analyzers Codogram The Codogram displays how the code level is changing over time and makes it easier for you to view traffic channels as they initiate and terminate and to track traffic channels call levels over time. The Codogram measurements can be saved into an external USB memory so that a post-analysis can be done with the application software JDViewer.
Page 352: Rcsi
JD780A Series Analyzers Measurement example Figure 166 Codogram in full view with CDMA signal analyzer Setting display You can view .your measurement results in a different view option. Procedure Press the TRACE/DISPLAY hard key. Press the Code Order soft key, and then select the code order option from the following choices: –...
Page 353 JD780A Series Analyzers To set the Pseudo-Noise (PN) offset, complete the following steps: Toggle the PN Offset soft key between Auto and Manual. Enter a value by using the numeric keys to set manually. Press the Enter soft key. To set the incremental step for the PN offset, complete the following steps: Press the PN Increment soft key.
Page 354: Cdp Table
JD780A Series Analyzers Procedure Press the TRACE/DISPLAY hard key. Press the Code Order soft key, and then select the code order option from the following choices: – Hadamard: To assign the number based on Walsh code order and display the measured code power according to the assigned number in sequence.
Page 355: Setting Limit For Modulation Tests
JD780A Series Analyzers Measurement example Figure 168 CDP Table measurement with CDMA signal analyzer Setting display If the CDP table spans over to the next page(s), you can change pages up and down to view .your measurement results. Procedure Press the TRACE/DISPLAY hard key. Press the Code Order soft key, and then select the code order option from the following choices: –...
Page 356: Performing Auto Measurements
JD780A Series Analyzers Waveform quality (Rho) Low Limit Carrier feed through Carrier Feed Through High Limit Pilot power Pilot Power High Limit [Abs|Rel] Low Limit [Abs|Rel] Highest level among inactive channels Max Inactive High Limit Optional. You can enable alarm sound that goes off if the measurement falls outside of the limit. Toggle the Beep soft key between On and Off to enable or disable the beep sound.
Page 357: Setting Measure Setup
JD780A Series Analyzers Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 334, you can continue your measurement. The measurement settings can be saved and recalled as a file. You can also use JDViewer, PC application software to configure a measure setup, save as a file, and load the file on to the instrument.
Page 358: Performing Power Statistics Ccdf Measurements
JD780A Series Analyzers Procedure Toggle the Display soft key and select the display option: – Result: to view the result table. The Display Result menu becomes activated. – Settings: to view the measurement settings for the auto measurement. Toggle the Display Result soft key and select the display result option: –...
Page 359: Measurement Example
JD780A Series Analyzers Measurement example Figure 169 CCDF measurement with CDMA signal analyzer Conducting CDMA OTA measurements This Over The Air (OTA) measurement has channel scanner, PN scanner, multipath profile, and Code Domain power screens. It is used to verify CDMA transmitter performance at any location providing reflective measurements and identifying signals providing from different sites.
Page 360 JD780A Series Analyzers Press the Enter soft key. The instrument displays a corresponding center frequency for the channel number. To set the integration bandwidth for the selected index, complete the following steps: Press the Integration Bandwidth soft key. Enter a value by using the numeric keys. You can also use the rotary knob. Select the unit: GHz, MHz, kHz, or Hz.
Page 361: Pn Scanner
JD780A Series Analyzers Setting limit for OTA channel scanner Procedure Press the LIMIT hot key. Press the Limit Line soft key to set a threshold for the limit line and Pass/Fail indication. Enter a value, and then press the dBm unit soft key. Toggle the Limit Line soft key between On and Off to display or dismiss the limit line.
Page 362: Multipath Profile
JD780A Series Analyzers Press the PN Increment soft key. Enter a value by using the numeric keys. Press the Enter soft key. Optional. Go to SAVE/LOAD > Save, and then select the save option from the choices available for your measurement mode. See “Using save” on page 31 for more information. Measurement example Figure 171 PN scanner measurement with CDMA OTA signal analyzer Multipath profile...
Page 363: Code Domain Power
JD780A Series Analyzers Enter a value by using the numeric keys. Press the Enter soft key. Optional. Go to SAVE/LOAD > Save, and then select the save option from the choices available for your measurement mode. See “Using save” on page 31 for more information. Measurement example Figure 172 Multipath profile measurement with CDMA OTA signal analyzer Code domain power...
Page 364 JD780A Series Analyzers Enter a value by using the numeric keys to set manually. Press the Enter soft key. To set the incremental step for the PN offset, complete the following steps: Press the PN Increment soft key. Enter a value by using the numeric keys. Press the Enter soft key.
Page 365: Route Map
JD780A Series Analyzers Measurement example Figure 173 Code domain power measurement with CDMA OTA signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. Setting display You can view .your measurement results in a different view option. Procedure Press the TRACE/DISPLAY hard key.
Page 366 JD780A Series Analyzers To load your map file, complete the following steps: Plug in your USB drive that has a floor map or .mcf file type created in JDMapCreator. . If the JDMapCreator application on your computer is connected to the instrument via USB or LAN, you can send a map file with a single layer to the instrument directly by using the Send to EQP menu in JDMapCreator.
Page 367 JD780A Series Analyzers steps: Press the Pilot Power soft key. Press the Excellent soft key to set its threshold. Enter a value, and then press the dBm soft key. You can also use the rotary knob. Press the Very Good soft key to set its threshold. Enter a value, and then press the dBm soft key.
Page 368 JD780A Series Analyzers 2) Pilot Ec/Io Controlling a map If you have loaded a sizable map that was created in JDMapCreator 1.2.0 or later, you can use the Map Control feature that enables you to zoom into the map and view a specific area of interest in detail. Procedure Press the TRACE/DISPLAY hard key.
Page 369: Using Ev-Do Signal Analyzer
Using EV-DO Signal Analyzer This chapter provides instructions for using the EV-DO Signal Analyzer function (option 021) with the EV-DO OTA Analyzer function (option 041). Topics discussed in this chapter are as follows:  Introduction ..........................370  Display overview ........................370 ...
Page 370: Introduction
JD780A Series Analyzers Introduction The EV-DO Signal Analyzer of the JD780A series performs power and spectrum measurements as well as modulation analysis to test the proper transmitter performance of EV-DO systems. It performs conformance testing according to the following standards providing a simple Pass/Fail indication on each test.
Page 371: Connecting A Cable
JD780A Series Analyzers Figure 175 EV-DO signal analyzer measurement screen Connecting a cable Direct connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the Power amplifier output port of BTS. Figure 176 Direct connection JD785A/JD786A JD788A Indirect connection Procedure...
Page 372: Over The Air (Ota)
JD780A Series Analyzers Figure 177 Indirect connection JD785A/JD786A JD788A CAUTION The maximum power for the Spectrum Analyzer RF In port is +25 dBm (0.316 W). If the input signal level to be measured is greater than +25 dBm, use a High Power Attenuator to prevent damage when you directly connect the signal to the instrument or connect the signal from the coupling port of a directional coupler.
Page 373: Selecting Measurement Mode
JD780A Series Analyzers Selecting measurement mode Procedure Press the MODE hard key. Press the Signal Analyzer soft key. Press the EV-DO soft key. The Spectrum mode is set by default. Press the MEASURE hot key, and then select the measurement mode option from the following choices: –...
Page 374: Setting Amplitude
JD780A Series Analyzers Toggle the Unit soft key and select Channel. To select the standard channel, complete the following steps: Press the Channel Std soft key. The standard channel window appears. See “Appendix C – Band, frequency & channel standard” on page 571 for more information. Select the band to be measured by using the rotary knob, the arrow keys, or the Page Up/Page Down soft keys.
Page 375 JD780A Series Analyzers NOTE It is recommended that you set the Attenuation to Auto in most situations so that the level of the input attenuator can be set automatically according to your input signal level. – To set the input attenuation manually up to 55 dB to optimize S/N, complete the following steps: Select Attenuation >...
Page 376: Setting Average
JD780A Series Analyzers External offset You can turn the External Offset on and manually set the external offset value. An offset consists of a cable loss and a user offset and the measurement result shows the value reflecting both offset values. When the external offset value is set at 40 dB in the Spectrum mode, the measurement result compensates 40 dB at both the Spectrum Analyzer and Signal Analyzer modes Procedure...
Page 377: Setting Trigger Source
JD780A Series Analyzers Setting trigger source You can set the trigger source option for your measurements. Connecting an external trigger is necessary for accurate modulation measurements on EV-DO systems. Procedure Press the TRIGGER hot key. Select the trigger source option from the following choices: Internal, External, or GPS. Setting external clock To enhance the reliability of modulation analysis measurements the JD780A series must be synchronized with a base station.
Page 378: Conducting Spectrum Measurements
JD780A Series Analyzers NOTE When a GPS antenna is connected and locked, GPS coordinates (longitude and latitude) are displayed on the screen and frequency reference is automatically set to GPS in the System > Freq Reference. Table 19 External reference indicators Type Indicator Description...
Page 379: Conducting Rf Measurements
JD780A Series Analyzers Procedure Press the TRACE/DISPLAY hard key. Press the Select Trace soft key, and then select the trace number: T1, T2, T3, T4, T5, or T6. The legend shape of the selected trace changes from square to round to indicate that the trace is the active one now.
Page 380: Occupied Bandwidth
JD780A Series Analyzers Figure 181 Channel power measurement with EV-DO signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 385 for more information.
Page 381: Spectrum Emission Mask (Sem)
JD780A Series Analyzers NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 385 for more information. Spectrum emission mask (SEM) The Spectrum Emission Mask (SEM) measurement required by 3GPP2 specifications encompasses different power limits and different measurement bandwidths (resolution bandwidths) at various frequency offsets.
Page 382: Multi-Acpr
JD780A Series Analyzers After configuring test parameters as described in the “Configuring test parameters” on page 373, your measurement result is displayed on the screen as like the following example, Figure 184. Figure 184 ACPR measurement with EV-DO signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication.
Page 383: Spurious Emissions
JD780A Series Analyzers Toggle the Unit soft key and select Channel. To select the standard channel, press the Channel Std soft key and then select the band to be measured. Press the Lowest Channel soft key to set the starting channel. Enter a value by using the numeric keys.
Page 384 JD780A Series Analyzers To set up the range table and parameters, press the Range Table soft key and then complete the following steps: Press the Range soft key, and then select the range number between 1 and 20 to add as a new or change the existing settings.
Page 385: Setting Limit For Rf Tests
JD780A Series Analyzers Figure 186 Spurious emissions measurement with EV-DO signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 385 for more information.
Page 386: Conducting Power Vs. Time Measurements
JD780A Series Analyzers Conducting power vs. time measurements The Power vs. Time (Idle Slot and Active Slot) in EV-DO Signal Analyzer verifies that the transmitter output power has correct amplitude, shape, and timing for the EV-DO format.  Idle Slot: Slot with no data in traffic channel. ...
Page 387: Setting Limit For Power Vs. Time Tests
JD780A Series Analyzers measurement result is displayed on the screen as like the following example, Figure 188. Figure 188 Power vs. time (active slot) measurement with EV-DO signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication.
Page 388: Conducting Modulation Measurements
JD780A Series Analyzers Conducting modulation measurements In order to make accurate measurements of time offset and PN, you must connect an external trigger before making a modulation measurement. Constellation The Constellation is used to observe some aspects of modulation accuracy and can reveal certain fault mechanisms such as I/Q amplitude imbalance or quadrature imbalance.
Page 389 JD780A Series Analyzers Measurement example Figure 189 Constellation measurement with EV-DO signal analyzer 1) Composite 64 2) Composite 128 Using EV-DO Signal Analyzer...
Page 390 JD780A Series Analyzers 3) Pilot 4) MAC 64 5) MAC 128 Using EV-DO Signal Analyzer...
Page 391: Code Domain Power
JD780A Series Analyzers 6) Data Code domain power The Code Domain Power (CDP) measures the distribution of power across the set of code channels, normalized to the total EV-DO power. It helps to verify that each code channel is operating at its proper level and to identify problems throughout the transmitter design from coding to the RF section.
Page 392 JD780A Series Analyzers Press the Detect Mode soft key, and then select the detection mode option: Auto, QPSK, 8PSK, 16 QAM, or 64 QAM. Optional. Go to SAVE/LOAD > Save, and then select the save option from the choices available for your measurement mode.
Page 393: Mac Codogram
JD780A Series Analyzers 3) MAC 128 4) Data MAC Codogram The MAC Codogram displays the power variation for every code over time, presenting a clear view of the traffic load per channels at any given time. The MAC Codogram measurements can be saved into an external USB memory so that a post-analysis can be done with the application software JDViewer.
Page 394 JD780A Series Analyzers Toggle the PN Offset soft key between Auto and Manual. Enter a value by using the numeric keys to set manually. Press the Enter soft key. To set the incremental step for the PN offset, complete the following steps: Press the PN Increment soft key.
Page 395: Rcsi
JD780A Series Analyzers RCSI The Received Code Strength Indicator (RCSI) is used to track the power variation over time of EV-DO channels: Pilot, MAC, Data, and Slot. The RCSI measurements can be saved into an external USB memory so that a post-analysis can be done with the application software JDViewer. Setting measure setup After configuring test parameters as described in the “Configuring test parameters”...
Page 396: Mac Cdp Table
JD780A Series Analyzers Measurement example Figure 192 RCSI measurement with EV-DO signal analyzer MAC CDP Table The MAC CDP Table is used for the user to look at a numeric and textual description of all the active control channels in the signal. Setting measure setup After configuring test parameters as described in the “Configuring test parameters”...
Page 397: Setting Limit For Modulation Tests
JD780A Series Analyzers Measurement example Figure 193 MAC CDP Table measurement with EV-DO signal analyzer Setting display If the MAC CDP table spans over to the next page(s), you can change pages up and down to view .your measurement results. Procedure Press the TRACE/DISPLAY hard key.
Page 398: Performing Auto Measurements
JD780A Series Analyzers Optional. You can enable alarm sound that goes off if the measurement falls outside of the limit. Toggle the Beep soft key between On and Off to enable or disable the beep sound. Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings. See “Using save”...
Page 399: Setting Display
JD780A Series Analyzers – Current: to let the instrumnet use current frequency (single carrier) and determine pass or fail based on the instrument’s limit settings in Auto Measure. – Scenario: to run a test with a programmed scenario in JDViewer. The Scenario menu becomes activated.
Page 400: Performing Power Statistics Ccdf Measurements
JD780A Series Analyzers Toggle the Display Result soft key and select the display result option: – Full: to view detailed measurement readings with the pass/fail indication. – Quick: to view only the Pass/Fail results. To view the measurement results for a different carrier, press the View Carrier soft key and then select the carrier number to view.
Page 401: Conducting Ev-Do Ota Measurements
JD780A Series Analyzers Conducting EV-DO OTA measurements This Over The Air (OTA) measurement has channel scanner, PN scanner, multipath profile, and Code Domain power screens. It is used to verify EV-DO transmitter performance at any location providing reflective measurements and identifying signals providing from different sites. The Code Domain power shows not only modulation performance metric but also amplifier capacity and code utilization metric.
Page 402 JD780A Series Analyzers To set the integration bandwidth for the selected index, complete the following steps: Press the Integration Bandwidth soft key. Enter a value by using the numeric keys. You can also use the rotary knob. Select the unit: GHz, MHz, kHz, or Hz. To add more channels to be scanned, repeat steps 3-5.
Page 403: Pn Scanner
JD780A Series Analyzers Measurement example Figure 195 Channel scanner measurement with EV-DO OTA signal analyzer PN scanner Each access network sector has a unique PN offset. The PN Scanner is used to identify all the active PNs in an area. Setting measure setup After configuring test parameters as described in the “Configuring test parameters”...
Page 404: Multipath Profile
JD780A Series Analyzers Measurement example Figure 196 PN scanner measurement with EV-DO OTA signal analyzer Multipath profile The Multipath Profile enables you to determine RF environmental conditions of testing area. It indicates the amount of power of the dominant pilot signal that is dispersed outside the main correlation peak due to multipath echoes that are expressed in dB.
Page 405: Code Domain Power
JD780A Series Analyzers Measurement example Figure 197 Multipath profile measurement with EV-DO OTA signal analyzer Code domain power Channels with high correlation factors are determined to be active channels and are indicated as such on the display. Once the channels are decoded, the analyzer determines the power of each channel relative to the total signal power.
Page 406 JD780A Series Analyzers To set the threshold between Auto and Manual, complete the following steps: Press the Threshold soft key. Its default setting is -27 dB. Enter a value between -50 and zero by using the numeric keys to change the value in the Manual mode.
Page 407: Route Map
JD780A Series Analyzers NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. Route map The JD780A Series provides the Route Map function that allows you to collect data of points in an indoor or outdoor environment and track the received signals and coverage of RF transmitters by plotting data real time directly on top of a loaded floor plan or a map.
Page 408 JD780A Series Analyzers NOTE For the Position setting, you can change the direction of the route with the arrow keys and the distance with the rotary knob. Toggle the Plot soft key and select Stop to stop plotting. Press the SAVE/LOAD hot key to save the result. See “Using save”...
Page 409 JD780A Series Analyzers Measurement example Figure 199 Route map measurement with EV-DO OTA signal analyzer 1) Pilot Power 2) Pilot Ec/Io Controlling a map If you have loaded a sizable map that was created in JDMapCreator 1.2.0 or later, you can use the Map Control feature that enables you to zoom into the map and view a specific area of interest in detail.
Page 410 JD780A Series Analyzers Press the Zoom In and Zoom Out soft keys, as you need, to decrease and increase the selected area. Move the rectangle by using the four arrow keys, as you need, to place it in a specific area of interest.
Page 411: Using Td-Scdma Signal Analyzer
Using TD-SCDMA Signal Analyzer This chapter provides instructions for using the TD-SCDMA Signal Analyzer function (option 025) with the TD-SCDMA OTA Analyzer function (option 045). Topics discussed in this chapter are as follows:  Introduction ..........................412  Display overview ........................413 ...
Page 412: Introduction
JD780A Series Analyzers Introduction The Time Division-Synchronous Code Division Multiple Access, also known as TD-SCDMA, is a 3G mobile telecommunications standard that is pursued by the Chinese Academy of Telecommunications Technology (CATT) in the People's Republic of China. The TD-SCDMA uses the TDD scheme while the WCDMA uses the FDD.
Page 413: Display Overview
JD780A Series Analyzers Display overview Figure 200 provides descriptions for each segment of the measurement screen. Figure 200 TD-SCDMA signal analyzer measurement screen Connecting a cable Direct connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the Power amplifier output port of BTS.
Page 414: Indirect Connection
JD780A Series Analyzers Indirect connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the monitor (test) port of BTS. Figure 202 Indirect connection JD785A/JD786A JD788A CAUTION The maximum power for the Spectrum Analyzer RF In port is +25 dBm (0.316 W). If the input signal level to be measured is greater than +25 dBm, use a High Power Attenuator to prevent damage when you directly connect the signal to the instrument or connect the signal from the coupling port of a directional coupler.
Page 415: Selecting Measurement Mode
JD780A Series Analyzers CAUTION If the input signal level to be measured is less than 0 dBm, set 0 dB attenuation or turn on the preamp to have better dynamic range for the OTA testing. Selecting measurement mode Procedure Press the MODE hard key. Press the Signal Analyzer soft key.
Page 416: Setting Amplitude
JD780A Series Analyzers Press the FREQ/DIST hard key. Toggle the Unit soft key and select Channel. To select the standard channel, complete the following steps: Press the Channel Std soft key. The standard channel window appears. See “Appendix C – Band, frequency & channel standard” on page 571 for more information. Select the band to be measured by using the rotary knob, the arrow keys, or the Page Up/Page Down soft keys.
Page 417 JD780A Series Analyzers – To set the input attenuator’s level automatically, select Attenuation > Auto. NOTE It is recommended that you set the Attenuation to Auto in most situations so that the level of the input attenuator can be set automatically according to your input signal level. –...
Page 418: Setting Average
JD780A Series Analyzers NOTE You can turn the Preamp on when the input attenuation range is from 0 dB to 10 dB. If the attenuation value is manually set to greater than 10 dB, the instrument will automatically turn off the pre-amplifier to display low-level signal properly on the chart. External offset You can turn the External Offset on and manually set the external offset value.
Page 419: Setting Trigger Source
JD780A Series Analyzers To return to the continuous sweep mode: Toggle the Sweep Mode soft key and select Continue. You can also use the HOLD hot key. The letter HOLD in red disappears and the sweeping resumes. Setting trigger source You can set the trigger source option for your measurements.
Page 420: Conducting Spectrum Measurements
JD780A Series Analyzers connected and locked. (yellow) The yellow GPS antenna icon indicates that a GPS antenna is connected and locking is in progress. (grey) The grey GPS antenna icon indicates that a GPS antenna is not connected, failed, or unable to be locked. Conducting spectrum measurements Setting measure setup After configuring test parameters as described in the “Configuring test parameters”...
Page 421: Setting Trace
JD780A Series Analyzers Setting trace You can display up to six traces on the measurement chart simultaneously. Procedure Press the TRACE/DISPLAY hard key. Press the Select Trace soft key, and then select the trace number: T1, T2, T3, T4, T5, or T6. The legend shape of the selected trace changes from square to round to indicate that the trace is the active one now.
Page 422: Occupied Bandwidth
JD780A Series Analyzers Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 415, you can continue your measurement. Procedure Press the MEASURE SETUP hot key. Press the Slot Number soft key, and then select the time slot number to be displayed: TS0, TS1, TS2, TS3, TS4, TS5, or TS6.
Page 423: Spectrum Emission Mask (Sem)
JD780A Series Analyzers can continue your measurement. Procedure Press the MEASURE SETUP hot key. Press the Slot Number soft key, and then select the time slot number to be displayed: TS0, TS1, TS2, TS3, TS4, TS5, or TS6. Optional. To set the delay, complete the following steps: Press the Delay soft key to set the amount of delay in µs.
Page 424 JD780A Series Analyzers them to the carrier power. Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 415, you can continue your measurement. Procedure Press the MEASURE SETUP hot key. Press the Slot Number soft key, and then select the time slot number to be displayed: TS0, TS1, TS2, TS3, TS4, TS5, or TS6.
Page 425: Aclr
JD780A Series Analyzers ACLR The Adjacent Channel Leakage power Ratio (ACLR) measures the amount of interference or power in an adjacent frequency channel according to the standards. Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 415, you can continue your measurement.
Page 426 JD780A Series Analyzers channels as possible. It helps you to measure ACLR in multi-channel transmitting Base Station environment. Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 415, you can continue your measurement. Procedure Press the MEASURE SETUP hot key.
Page 427: Spurious Emissions
JD780A Series Analyzers Measurement example Figure 210 Multi-ACLR measurement with TD-SCDMA signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 428 for more information.
Page 428: Setting Limit For Rf Tests
JD780A Series Analyzers – Select More (1/2) > Attenuation, and then specify an value in the multiple of five. – Select More (1/2) > RBW, and then specify a RBW value. – Select More (1/2) > VBW, and then specify a VBW value. Press the PREV hard key.
Page 429: Conducting Power Vs. Time Measurements
JD780A Series Analyzers Procedure Press the LIMIT hot key. Press the RF Test Limits soft key. Select the test item(s) and set the limit(s) depending on your selected measurement mode: To set the limit for Select Channel power Channel Power High Limit Low Limit Occupied bandwidth...
Page 430 JD780A Series Analyzers Enter a value up to 16 by using the numeric keys. Press the Enter soft key. Optional. To set the delay, complete the following steps: Press the Delay soft key to set the amount of delay in µs. Enter a value by using the numeric keys.
Page 431: Power Vs. Time (Frame)
JD780A Series Analyzers Power vs. time (frame) The Power vs. Time (Frame) measures the modulation envelope in the time domain, showing the power of each time slot of the TD-SCDMA signal. Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 415, you can continue your measurement.
Page 432: Power Vs. Time (Mask)
JD780A Series Analyzers Measurement example Figure 213 Power vs. time (frame) measurement with TD-SCDMA signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for power vs. time tests” on page 435 for more information.
Page 433: Timogram
JD780A Series Analyzers Optional. Press the Miscellaneous soft key, and then do the following(s) as needed: – To select how to determine scrambling estimation, toggle the Scramble soft key and select Spec or Full. NOTE The Spec searches “Sync Sequence Number” from 0 to 31 based on the TD-SCDMA specification and determines “Scrambling Code Number”...
Page 434 JD780A Series Analyzers Press the MEASURE SETUP hot key. Press the Spread Factor soft key, and then select the spread factor option: DL Auto for auto detection of downlink, UL Auto for auto detection of uplink, SF1, SF2, SF4, SF8, or SF16 To set the number of maximum users, complete the following steps: Press the Max Users soft key.
Page 435: Setting Limit For Power Vs. Time Tests
JD780A Series Analyzers Measurement example Figure 215 Timogram with TD-SCDMA signal analyzer Setting limit for power vs. time tests Procedure Press the LIMIT hot key. Press the PvsT Test Limits soft key. Select the test item(s) and set the limit(s) depending on your selected measurement mode: To set the limit for Select Slot power...
Page 436: Constellation
JD780A Series Analyzers Constellation The Constellation is used to observe some aspects of modulation accuracy and can reveal certain fault mechanisms such as I/Q amplitude imbalance or quadrature imbalance. It displays constellation diagram by modulation types. Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 415, you can continue your measurement.
Page 437: Midamble Power
JD780A Series Analyzers Press the Enter soft key. Measurement example Figure 216 Constellation measurement with TD-SCDMA signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 442 for more information.
Page 438: Code Power
JD780A Series Analyzers Press the Delay soft key to set the amount of delay in µs. Enter a value by using the numeric keys. You can also use the rotary knob. Press the µs soft key. NOTE The Delay setting is used only when there is a time offset in the signals to be measured. –...
Page 439 JD780A Series Analyzers can continue your measurement. The measurement settings can be saved and recalled as a file. You can also use JDViewer, PC application software to configure a measure setup, save as a file, and load the file on to the instrument. Procedure Press the MEASURE SETUP hot key.
Page 440: Code Error
JD780A Series Analyzers Measurement example Figure 218 Code power measurement with TD-SCDMA signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication for the Max Inactive. See “Setting limit for modulation tests” on page 442 for more information.
Page 441 JD780A Series Analyzers Press the µs soft key. NOTE The Delay setting is used only when there is a time offset in the signals to be measured. – To select how to determine scrambling estimation, toggle the Scramble soft key and select Spec or Full.
Page 442: Setting Limit For Modulation Tests
JD780A Series Analyzers Setting limit for modulation tests Procedure Press the LIMIT hot key. Press the Modulation Test Limits soft key. Select the test item(s) and set the limit(s) depending on your selected measurement mode: To set the limit for Select Frequency error Frequency Error...
Page 443 JD780A Series Analyzers can also use JDViewer, PC application software to configure a measure setup, save as a file, and load the file on to the instrument. Procedure Press the MEASURE SETUP hot key. Toggle the Configuration soft key and select the configuration option: –...
Page 444: Conducting Td-Scdma Ota Measurements
JD780A Series Analyzers Procedure Toggle the Display soft key and select the display option: – Result: to view the result table. The Display Result menu becomes activated. – Settings: to view the measurement settings for the auto measurement. Toggle the Display Result soft key and select the display result option: –...
Page 445: Sync-Dl Id Vs. Tau
JD780A Series Analyzers Measurement example Figure 220 Sync-DL ID scanner measurement with TD-SCDMA OTA signal analyzer Sync-DL ID vs. Tau Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 415, you can continue your measurement. Procedure Press the MEASURE SETUP hot key.
Page 446: Sync-Dl Id Multipath
JD780A Series Analyzers Measurement example Figure 221 Sync-DL ID vs. Tau measurement with TD-SCDMA OTA signal analyzer Sync-DL ID multipath Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 415, you can continue your measurement. Procedure Press the MEASURE SETUP hot key.
Page 447: Sync-Dl Id Analyzer
JD780A Series Analyzers Measurement example Figure 222 Sync-DL ID multipath measurement with TD-SCDMA OTA signal analyzer Sync-DL ID analyzer Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 415, you can continue your measurement. Procedure Press the MEASURE SETUP hot key.
Page 448: Route Map
JD780A Series Analyzers Press the EVM RMS soft key. Toggle the Test Limits soft key between On and Off to enable or disable the limit. Press the High Limit soft key, and then enter a value for the upper threshold. Press the Enter soft key.
Page 449 JD780A Series Analyzers Indoor mapping does not necessarily need a GPS antenna. Configure test parameters as described in the “Configuring test parameters” on page 415. To load your map file, complete the following steps: Plug in your USB drive that has a floor map or .mcf file type created in JDMapCreator. . If the JDMapCreator application on your computer is connected to the instrument via USB or LAN, you can send a map file with a single layer to the instrument directly by using the Send to EQP menu in JDMapCreator.
Page 450 JD780A Series Analyzers Press the Very Good soft key to set its threshold. Enter a value, and then press the Enter soft key. You can also use the rotary knob. Press the Good soft key to set its threshold. Enter a value, and then press the Enter soft key. You can also use the rotary knob. Press the Fair soft key to set its threshold.
Page 451 JD780A Series Analyzers 2) Full view Controlling a map If you have loaded a sizable map that was created in JDMapCreator 1.2.0 or later, you can use the Map Control feature that enables you to zoom into the map and view a specific area of interest in detail. Procedure Press the TRACE/DISPLAY hard key.
Page 452: Using Mobile Wimax Signal Analyzer
Using Mobile WiMAX Signal Analyzer This chapter provides instructions for using the Mobile WiMAX Signal Analyzer function (option 026) with the Mobile WiMAX OTA Analyzer function (option 046). Topics discussed in this chapter are as follows:  Introduction ..........................453 ...
Page 453: Introduction
JD780A Series Analyzers Introduction The Mobile WiMAX Signal Analyzer performs power and spectrum measurements as well as modulation analysis to test the proper transmitter performance of Mobile WiMAX systems. It performs conformance testing according to the following standards providing a simple Pass/Fail indication on each test.
Page 454: Connecting A Cable
JD780A Series Analyzers Figure 225 Mobile WiMAX signal analyzer measurement screen Connecting a cable Direct connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the Power amplifier output port of BTS. Figure 226 Direct connection JD785A/JD786A JD788A Indirect connection...
Page 455: Over The Air (Ota)
JD780A Series Analyzers Figure 227 Indirect connection JD785A/JD786A JD788A CAUTION The maximum power for the Spectrum Analyzer RF In port is +25 dBm (0.316 W). If the input signal level to be measured is greater than +25 dBm, use a High Power Attenuator to prevent damage when you directly connect the signal to the instrument or connect the signal from the coupling port of a directional coupler.
Page 456: Selecting Measurement Mode
JD780A Series Analyzers Selecting measurement mode Procedure Press the MODE hard key. Press the Signal Analyzer soft key. Press the More (1/2) > Mobile WiMAX soft key. The Spectrum mode is set by default. Press the MEASURE hot key, and then select the measurement mode option from the following choices: –...
Page 457: Setting Amplitude
JD780A Series Analyzers See “Appendix C – Band, frequency & channel standard” on page 571 for more information. Select the band to be measured by using the rotary knob, the arrow keys, or the Page Up/Page Down soft keys. Press the Select soft key or the rotary knob to confirm the selection. Press the Channel Number soft key.
Page 458 JD780A Series Analyzers – To set the input attenuation manually up to 55 dB to optimize S/N, complete the following steps: Select Attenuation > Manual. Press the Attenuation Value soft key to set the level. Enter a value between 0 and 55 in fives by using the numeric keys. Press the dB soft key or the ENTER hard key.
Page 459: Setting Average
JD780A Series Analyzers External offset You can turn the External Offset on and manually set the external offset value. An offset consists of a cable loss and a user offset and the measurement result shows the value reflecting both offset values. When the external offset value is set at 40 dB in the Spectrum mode, the measurement result compensates 40 dB at both the Spectrum Analyzer and Signal Analyzer modes Procedure...
Page 460: Setting Trigger Source
JD780A Series Analyzers Setting trigger source You can set the trigger source option for your measurements. Procedure Press the TRIGGER hot key. Select the trigger source option from the following choices: Internal, External, or GPS. Setting external clock To enhance the reliability of modulation analysis measurements the JD780A series must be synchronized with a base station.
Page 461: Conducting Spectrum Measurements
JD780A Series Analyzers Conducting spectrum measurements Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 456, you can continue your measurement. Procedure Press the MEASURE SETUP hot key. Press the System Config soft key, and then do the following: Press the Bandwidth soft key, and then select the nominal channel bandwidth to be measured from the following choices: –...
Page 462: Setting Trace
JD780A Series Analyzers Figure 230 Spectrum measurement screen with Mobile WiMAX signal analyzer Setting trace You can display up to six traces on the measurement chart simultaneously. Procedure Press the TRACE/DISPLAY hard key. Press the Select Trace soft key, and then select the trace number: T1, T2, T3, T4, T5, or T6. The legend shape of the selected trace changes from square to round to indicate that the trace is the active one now.
Page 463: Conducting Rf Measurements
JD780A Series Analyzers Optional. Press the More (1/2) > Trace Info soft key, and then select the trace number to view the trace’s parameter setting information stored at the time of the measurement or None to hide the information display. Optional.
Page 464: Occupied Bandwidth
JD780A Series Analyzers Press the µs soft key. NOTE The Delay setting is used only when there is a time offset in the signals to be measured. To set the start/stop symbols, complete the following steps: Press the Start Symbol soft key. Enter a value by using the numeric keys, and then press the Enter soft key.
Page 465 JD780A Series Analyzers Press the Bandwidth soft key, and then select the nominal channel bandwidth to be measured from the following choices: – 7 MHz (8/7): Sets the channel bandwidth to 7 MHz with sampling factor 8/7. In conjunction with nominal channel bandwidth –...
Page 466: Spectrum Emission Mask (Sem)
JD780A Series Analyzers Measurement example Figure 232 Occupied bandwidth measurement with Mobile WiMAX signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 469 for more information.
Page 467: Spurious Emissions
JD780A Series Analyzers 1/32. Press the DL Symbols soft key to set the number of downlink symbols. Enter a value by using the numeric keys, and then press the Enter soft key. Press the UL Symbols soft key to set the number of uplink symbols. Enter a value by using the numeric keys, and then press the Enter soft key.
Page 468 JD780A Series Analyzers emission within the necessary channel bandwidth and modulated signal measured at the RF port of the Base Station. Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 456, you can continue your measurement. Procedure Press the MEASURE SETUP hot key.
Page 469: Setting Limit For Rf Tests
JD780A Series Analyzers Measurement example Figure 234 Spurious emissions measurement with Mobile WiMAX signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for RF tests” on page 469 for more information.
Page 470: Conducting Power Vs. Time (Frame) Measurements
JD780A Series Analyzers Conducting power vs. time (frame) measurements The Power vs. Time (Frame) measures the modulation envelope in the time domain, showing the power of each time slot in a Mobile WiMAX signal. Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 456, you can continue your measurement.
Page 471: Setting Limit For Power Vs. Time Tests
JD780A Series Analyzers – To select the detect mode, press the Detect Mode soft key and then select the option: Auto, QPSK, 16 QAM, or 64 QAM. Setting limit for power vs. time tests Procedure Press the LIMIT hot key. Press the PvsT Test Limits soft key.
Page 472: Conducting Modulation Measurements
JD780A Series Analyzers Conducting modulation measurements Constellation The Constellation is used to observe some aspects of modulation accuracy and can reveal certain fault mechanisms such as I/Q amplitude imbalance or quadrature imbalance. It displays constellation diagram by modulation types. Setting measure setup After configuring test parameters as described in the “Configuring test parameters”...
Page 473: Spectral Flatness
JD780A Series Analyzers NOTE The permutation zone that is a number of contiguous OFDMA symbols in downlink that use the same permutation. The DL subframe may contain more than one permutation zone. The maximum number of DL zone is 8 in one DL subframe. –...
Page 474 JD780A Series Analyzers Procedure Press the MEASURE SETUP hot key. Press the System Config soft key, and then do the following: Press the Bandwidth soft key, and then select the nominal channel bandwidth to be measured from the following choices: –...
Page 475: Evm Vs. Subcarrier
JD780A Series Analyzers Measurement example Figure 237 Spectral flatness measurement with Mobile WiMAX signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication for the Spectral Flatness. See “Setting limit for modulation tests”...
Page 476 JD780A Series Analyzers Enter a value by using the numeric keys, and then press the Enter soft key. Press the CP Ratio soft key, and then select the cyclic prefix ratio option: 1/4, 1/8, 1/16, or 1/32. Press the DL Symbols soft key to set the number of downlink symbols. Enter a value by using the numeric keys, and then press the Enter soft key.
Page 477: Evm Vs. Symbol
JD780A Series Analyzers Measurement example Figure 238 EVM vs. subcarrier measurement with Mobile WiMAX signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 479 for more information.
Page 478 JD780A Series Analyzers Enter a value by using the numeric keys, and then press the Enter soft key. Press the CP Ratio soft key, and then select the cyclic prefix ratio option: 1/4, 1/8, 1/16, or 1/32. Press the DL Symbols soft key to set the number of downlink symbols. Enter a value by using the numeric keys, and then press the Enter soft key.
Page 479: Setting Limit For Modulation Tests
JD780A Series Analyzers Measurement example Figure 239 EVM vs. symbol measurement with Mobile WiMAX signal analyzer NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for modulation tests” on page 479 for more information.
Page 480: Performing Auto Measurements
JD780A Series Analyzers Performing auto measurements The Auto Measure function of the JD780A series allows a complete signal profiling covering RF characterization and modulation quality parameters of up to 10 different carriers, particularly useful on an overlay architecture where base stations are transmitting in different frequencies. The Auto Measure can be easily executed either by selecting a menu in the instrument or by running a programmed scenario in the PC-based application so that the instrument automatically configure and perform tests on every aspect of all the carriers.
Page 481: Performing Power Statistics Ccdf Measurements
JD780A Series Analyzers Enter the time in the HH:MM format, and then press the Enter soft key. Press the Stop Time (HH:MM) soft key. Enter the time in the HH:MM format, and then press the Enter soft key. Press the Time Interval soft key. Enter the amount of time in minutes, and then press the Enter soft key.
Page 482: Setting Measure Setup
JD780A Series Analyzers Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 456, you can continue your measurement. The measurement settings can be saved and recalled as a file. You can also use JDViewer, PC application software to configure a measure setup, save as a file, and load the file on to the instrument.
Page 483 JD780A Series Analyzers Setting measure setup After configuring test parameters as described in the “Configuring test parameters” on page 456, you can continue your measurement. Procedure Press the MEASURE SETUP hot key. Press the System Config soft key, and then do the following: Press the Bandwidth soft key, and then select the nominal channel bandwidth to be measured from the following choices: –...
Page 484: Multipath Profile
JD780A Series Analyzers Measurement example Figure 241 Preamble scanner measurement with Mobile WiMAX OTA signal analyzer Multipath profile The Multipath Profile enables the user to determine RF environmental conditions of testing area. It indicates the multipath power with time delay in us up to six. The multipath profile is the result of portions of the original broadcast signal arriving at the receiving antenna out of phase.
Page 485: Preamble Power Trend
JD780A Series Analyzers Press the DL Symbols soft key to set the number of downlink symbols. Enter a value by using the numeric keys, and then press the Enter soft key. Press the UL Symbols soft key to set the number of uplink symbols. Enter a value by using the numeric keys, and then press the Enter soft key.
Page 486 JD780A Series Analyzers Procedure Press the MEASURE SETUP hot key. Press the System Config soft key, and then do the following: Press the Bandwidth soft key, and then select the nominal channel bandwidth to be measured from the following choices: –...
Page 487: Route Map
JD780A Series Analyzers Measurement example Figure 243 Preamble power trend with Mobile WiMAX OTA signal analyzer Route map The JD780A Series provides the Route Map function that allows you to collect data of points in an indoor or outdoor environment and track the received signals and coverage of RF transmitters by plotting data real time directly on top of a loaded floor plan or a map.
Page 488 JD780A Series Analyzers NOTE With the Map setting, you can view only the collected points that can be seen within the boundary of the loaded map. If a point is off the map, the instrument displays an arrow to indicate the direction of the current location on the map and the distance from the center to the location at the top of the screen.
Page 489 JD780A Series Analyzers Measurement example Figure 244 Route map measurement with Mobile WiMAX OTA signal analyzer Controlling a map If you have loaded a sizable map that was created in JDMapCreator 1.2.0 or later, you can use the Map Control feature that enables you to zoom into the map and view a specific area of interest in detail. Procedure Press the TRACE/DISPLAY hard key.
Page 490: Using Cable And Antenna Analyzer
Using Cable and Antenna Analyzer This chapter provides instructions for using the Cable and Antenna Analyzer function, which is available for the JD785A Base Station Analyzer and the JD786A RF Analyzer. Topics discussed in this chapter are as follows:  Introduction ..........................
Page 491: Introduction
JD780A Series Analyzers Introduction The Cable and Antenna Analyzer is a diagnostic tool needed to accurately detect operational problems by performing cable and antenna measurements to verify the base station’s infrastructure, including feed lines, connectors, antennas, cables, jumpers, amplifiers, and filters. The JD785A Base Station Analyzer and the JD786A RF Analyzer have all of the measurement functions necessary to verify cable and antenna systems from Voltage Standing Wave Ratio (VSWR) to power measurements.
Page 492: Selecting Measurement Mode
JD780A Series Analyzers Figure 245 Reflection measurement screen Selecting measurement mode Procedure Press the MODE hard key. Press the Cable & Antenna Analyzer soft key. The Reflection (VSWR) mode is selected by default. To change the mode, press the MEASURE hot key and then select the measurement mode: –...
Page 493: Setting Distance
JD780A Series Analyzers Procedure To set the start and stop frequencies: Press the FREQ/DIST hard key. Press the Start Frequency soft key. Enter a value by using the numeric keys. You can also use the rotary knob or the arrow keys. Select the unit: GHz, MHz, kHz, or Hz.
Page 494: Adjusting Scale
JD780A Series Analyzers Adjusting scale You can adjust the Y-axis scale to optimize the display of measurement trace(s). Adjusting scale does not affect the calibration state. Procedure Press the AMP/SCALE hard key. Do one of the following choices: – Press the Auto Scale to optimize the display of the measured trace by letting the instrument set the minimum and maximum values for the Y-axis automatically.
Page 495: 1-Port Calibration
JD780A Series Analyzers  Calibration accessories (optional).  Mechanical Y-Cal kit or electronic EZ-Cal kit  Phase-stabilized test cable 1-port calibration Measurement modes that need the 1-port calibration are Reflection, DTF, Cable Loss, 1 Port Phase, and Smith Chart. It is recommended that you perform an O-S-L calibration right at the Reflection/RF Out port of the instrument without using an extension cable in order to minimize a measurement error.
Page 496 JD780A Series Analyzers The calibration progress bar appears. Connect the LOAD connector of the CAL Kit directly to the Cable and Antenna Analyzer Reflection/RF Out port or at the end of the connected extension cable. Press the Continue soft key to continue calibration. The calibration progress bar appears.
Page 497: 2-Port Calibration
JD780A Series Analyzers Procedure Press the MEASURE SETUP hot key. Press the Calibrate soft key. Connect the OPEN connector of your mechanical Y-Cal kit directly to the Reflection/RF Out port or at the end of the connected extension cable. Press the Quick Cal. soft key to start the quick calibration. The calibration status on the screen appears.
Page 498 JD780A Series Analyzers Connect the Reflection/RF Out port and the RF In port for the Cable and Antenna Analyzer with the test cable and the proper adapter as illustrated in Figure 248-2. Press the Continue soft key to continue calibration. The calibration progress bar appears.
Page 499: Calibration Status Indicators
JD780A Series Analyzers Figure 250 2-port calibration connection in Scalar measurements Procedure Press the MEASURE SETUP hot key. Press the Calibrate soft key. The on-screen instruction for the calibration appears. Connect the Reflection/RF Out port for the Cable and Antenna Analyzer and the RF In port for the Spectrum Analyzer with a test cable as illustrated in Figure 250.
Page 500: Connecting A Cable
JD780A Series Analyzers Connecting a cable Connecting a cable for reflection, DTF, 1-port phase, and Smith Chart measurements Procedure Connect the one end of the port extension cable to the Cable and Antenna Analyzer Reflection/RF Out port of the instrument. Connect the other end of the port extension cable to an antenna or feed line as illustrated in Figure 251.
Page 501: Connecting A Cable For 2-Port Vector Measurements
JD780A Series Analyzers Out port of the instrument. Connect the SHORT standard of the Cal Kit to the other end of the cable under test as illustrated in Figure 252. Measurement result is displayed on the screen. Figure 252 Connection for cable loss (1 port) measurement Connecting a cable for 2-port vector measurements Procedure Connect the one end of the Thru test cable to the Cable and Antenna Analyzer Reflection/RF Out...
Page 502: Connecting A Cable For 2-Port Scalar Measurements
JD780A Series Analyzers Connecting a cable for 2-port scalar measurements Procedure Connect the one end of the Thru test cable to the Cable and Antenna Analyzer Reflection/RF Out port of the instrument and the other end of the cable to DUT. Connect the DUT to the Spectrum Analyzer RF In port of the instrument as illustrated in Figure 254.
Page 503: Measurement Example
JD780A Series Analyzers Toggle the Bias Tee soft key and select On. Enter a value between 12 and 32 with 0.1 V step. Enter the V soft key. NOTE The instrument’s built-in bias tee function (option 002) supplies 12-32 VDC bias to active devices through the RF In port, eliminating the need of an external power supply.
Page 504: Performing Dtf Measurements
JD780A Series Analyzers Performing DTF measurements The Distance-To-Fault (DTF) measurement can be used to accurately identify fault locations in the cell-site transmission (cable and feed line) system, indicating signal discontinuities in VSWR or return loss over distance in meter or foot. This measurement precisely pinpoints the location of such things as damaged or degraded antennas, connectors, amplifiers, filters, and duplexers.
Page 505: Measurement Example
JD780A Series Analyzers Enter the V soft key. NOTE The instrument’s built-in bias tee function (option 002) supplies 12-32 VDC bias to active devices through the RF In port, eliminating the need of an external power supply. Optional. To select the output power, toggle the Output Power soft key between 0 dBm and -30 dBm.
Page 506: Performing Reflection-Dtf Measurements
JD780A Series Analyzers Figure 257 DTF measurement with the alternate DTF band on NOTE You can go to MEASURE SETUP > Alternate DTF Band Settings to scale down a specific sub-band. See “Setting alternate DTF band” on page 515 for more information. Performing reflection-DTF measurements You can view two measurement results simultaneously on the screen as you configure each measurement setting.
Page 507: Measurement Example
JD780A Series Analyzers Measurement example Figure 258 Reflection-DTF dual measurement 1) Alt DTF band off: 2) Alt DTF band on: NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for cable and antenna analyzer” on page 516 for more information.
Page 508: Making A Measurement
JD780A Series Analyzers measurement can be particularly useful in measuring the loss of feed line connected to the antenna. Making a measurement Procedure Make a proper cable connection as described in “Connecting a cable for cable loss (1 port) measurements” on page 500. Press the MEASURE SETUP hot key.
Page 509: Performing 1-Port Phase Measurements
JD780A Series Analyzers NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for cable and antenna analyzer” on page 516 for more information. Figure 260 Cable loss (1 port) measurement with the zone enabled NOTE You can go to MEASURE SETUP >...
Page 510: Measurement Example
JD780A Series Analyzers Enter the V soft key. NOTE The instrument’s built-in bias tee function (option 002) supplies 12-32 VDC bias to active devices through the RF In port, eliminating the need of an external power supply. NOTE See “Performing reflection measurements” on page 502 for more information on how to set other measurement setup parameters for the Cable Loss (1 Port) measurement.
Page 511: Performing Smith Chart Measurements
JD780A Series Analyzers NOTE You can use the LIMIT hot key to analyze your measurements with the user-definable limit and Pass/Fail indication. See “Setting limit for cable and antenna analyzer” on page 516 for more information. NOTE You can go to MEASURE SETUP > Zone to view your measurements in detail with the user-definable zoom zones.
Page 512: Measurement Example
JD780A Series Analyzers Measurement example Figure 263 Smith chart measurement Performing 2-port vector measurements The Vector measurement is used to perform faster and more accurate measurement with around 80 dB dynamic range. It also provides antenna isolation measurement. You can determine DUT’s S phase characteristic by selecting the measurement display type as Phase.
Page 513: Measurement Example
JD780A Series Analyzers NOTE The instrument’s built-in bias tee function (option 002) supplies 12-32 VDC bias to active devices through the RF In port, eliminating the need of an external power supply. Optional. To select the output power, toggle the Output Power soft key between 0 dBm and -30 dBm.
Page 514: Measurement Example
JD780A Series Analyzers Press the Data Points soft key to change the resolution of your measurement, and then select the data point option: 126, 251, 501, 1001, and 2001. Changing the data point does not affect current calibration. NOTE The larger number you choose, the higher resolution you get and the longer the instrument takes to sweep and display results.
Page 515: Setting Zoom Zones
JD780A Series Analyzers To clear, write or capture, or hide the trace(s), do one of the following: Select Trace Legend Clear current data and display with new Clear Write measurements Capture the selected trace and compare traces Capture Load a saved trace Load Hide the selected trace Trace View >...
Page 516: Setting Limit For Cable And Antenna Analyzer
JD780A Series Analyzers need of an additional calibration. Procedure Press the MEASURE SETUP hot key. Press the Alt DTF Band Settings soft key. Toggle the Alt DTF Band soft key and select On or Off to enable or disable the alternate band feature.
Page 517 JD780A Series Analyzers Press the Enter soft key. Press the Autoset soft key to let the instrument set the limit for each segment and display the line. Optional. To move the limit line, complete the following steps: Select Limit Up/Down or Limit Left/Right. Turn the rotary knob to move the line as desired.
Page 518: Using E1 Analyzer
Using E1 Analyzer This chapter provides instructions for using the E1 Analyzer function (option 004). Topics discussed in this chapter are as follows:  Introduction ..........................519  Display overview ........................519  Connecting a cable ........................520  Monitoring transmission ......................521 ...
Page 519: Introduction
JD780A Series Analyzers Introduction The European Conference of Postal and Telecommunications Administrations (CEPT) originally standardized the E-carrier system, which revised and improved the earlier American T-carrier technology, and this has now been adopted by the International Telecommunication Union Telecommunication Standardization Sector (ITU-T). E1 is transmitted physically as 32 timeslots, but one is used for framing and typically one allocated for signaling call setup and tear down.
Page 520: Connecting A Cable
JD780A Series Analyzers Connecting a cable Out-of-service testing Figure 267 Point-to-point connection Figure 268 Loop-back connection Figure 269 Error injection and measurement connection In-service monitoring Figure 270 In-service connection Using E1 Analyzer...
Page 521: Monitoring Transmission
JD780A Series Analyzers Monitoring transmission Making a test Procedure To select the measurement mode: Press the MODE hard key. Press the E1/T1 Analyzer soft key. Select E1 Analyzer > Monitoring. To configure measurement parameters: Press the MEASURE SETUP hot key. Press the RX Mode soft key, and then select the receiver input option from the following choices: –...
Page 522: Measurement Example
JD780A Series Analyzers Measurement example Figure 271 E1 transmission monitoring for framing PCM30 NOTE Bit Error is not supported for the framing type PCM30. Performing BERT testing There are three RX modes available for the BERT testing.  Terminate Mode: The Terminate mode is used when you wish to send and receive an E1 signal.
Page 523 JD780A Series Analyzers Select E1 Analyzer > BERT. To configure measurement parameters: Press the MEASURE SETUP hot key. Press the RX Mode soft key, and then select the receiver input option from the following choices: – Terminate: Provides 120-ohm nominal input impedance, according to the framing and line code settings.
Page 524: Measurement Example
JD780A Series Analyzers To start or stop testing: Press the MEASURE hot key. Press the BERT soft key, and then select the testing option as needed: Start, Stop, or Clear. To select the error injection type: Press the Error Injection soft key, and then select the error injection type: None, 1E-3, 1E-4, 1E-5, or Single.
Page 526: Using T1 Analyzer
Using T1 Analyzer This chapter provides instructions for using the T1 Analyzer function (option 005). Topics discussed in this chapter are as follows:  Introduction ..........................527  Display overview ........................527  Connecting a cable ........................528  Monitoring transmission ......................529 ...
Page 527: Introduction
JD780A Series Analyzers Introduction The T1 is what telephone companies have traditionally used to transport digitized telephone conversations between central offices. As early as the 1960’s, a single T1 circuit made it possible for a telephone company to deliver 24 high quality voice conversations. T1 is a fully digitalized service with no possibility of crosstalk, which is common in analog carrier networks where copper pairs pickup emissions from neighboring pairs.
Page 528: Connecting A Cable
JD780A Series Analyzers Connecting a cable Out-of-service testing Figure 274 Point-to-point connection Figure 275 Loop-back connection Figure 276 Error injection and measurement connection In-service monitoring Figure 277 In-service connection Using T1 Analyzer...
Page 529: Monitoring Transmission
JD780A Series Analyzers Monitoring transmission Making a test Procedure To select the measurement mode: Press the MODE hard key. Press the E1/T1 Analyzer soft key. Select T1 Analyzer > Monitoring. To configure measurement parameters: Press the MEASURE SETUP hot key. Press the RX Mode soft key, and then select the receiver input option from the following choices: –...
Page 530: Measurement Example
JD780A Series Analyzers Measurement example Figure 278 T1 transmission monitoring Performing BERT testing Making a test Procedure To select the measurement mode: Press the MODE hard key. Press the E1/T1 Analyzer soft key. Select T1 Analyzer > BERT. To configure measurement parameters: Press the MEASURE SETUP hot key.
Page 531 JD780A Series Analyzers Toggle the Line Code soft key between AMI and B8ZS and select the line code type to send an T1 signal: – AMI: It stands for Alternate Mark Inversion. A line code uses one three level signal to convey binary digits in which successive binary ones (“marks”...
Page 532: Measurement Example
JD780A Series Analyzers To set the error injection optios: Press the Alarm Injection soft key. Toggle the AIS Alarm soft key between On and Off to enable or disable the Alarm Indication Signal. Toggle the RAI Alarm soft key between On and Off to enable or disable the Remote Alarm Indication.
Page 533: Measurement Example
JD780A Series Analyzers – Monitor: Provides 100-ohm nominal input impedance for the in-service monitoring of T1 lines. Toggle the Framing soft key between SF-D4 and ESF and select the framing type for your receiver setting: – SF-D4 (Super Frame-D4): Group of 12 frames, used to align equipment for framing. –...
Page 534: Performing Loop Testing
JD780A Series Analyzers Performing loop testing Making a test Procedure To select the measurement mode: Press the MODE hard key. Press the E1/T1 Analyzer soft key. Select T1 Analyzer > Loop Test. To configure measurement parameters: Press the MEASURE SETUP hot key. Press the RX Mode soft key, and then select the receiver input option from the following choices: –...
Page 535 JD780A Series Analyzers – 2e23: A pseudorandom pattern based on a 23 bit shift register. – 2e15: A pseudorandom pattern based on a 15 bit shift register. – 2e23 INV: Bit inversed pseudorandom pattern based on a 23 bit shift register. –...
Page 536: Measurement Example
JD780A Series Analyzers Toggle the RAI Alarm soft key between On and Off to enable or disable the Remote Alarm Indication. Optional. You can save event records automatically by using the Save Logging Data soft key. See “Using save” on page 31 for more information. Measurement example Figure 281 T1 loop testing Using T1 Analyzer...
Page 537: Using Channel Scanner
Using Channel Scanner This chapter provides instructions for using the Channel Scanner function (option 012). Topics discussed in this chapter are as follows:  Introduction ..........................538  Display overview ........................538  Connecting a cable ........................538  Selecting measurement mode ....................540 ...
Page 538: Introduction
JD780A Series Analyzers Introduction A Channel Scanner is a radio receiver that can automatically tune or scan two or more discrete frequencies and multi-channels, indicating when it finds a signal on one of them and then continuing scanning when that frequency goes silent. You can measure up to 20 channels with this channel scanner.
Page 539: Indirect Connection
JD780A Series Analyzers Figure 283 Direct connection JD785A/JD786A JD788A Indirect connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the monitor (test) port of BTS. Figure 284 Indirect connection JD785A/JD786A JD788A CAUTION The maximum power for the Spectrum Analyzer RF In port is +25 dBm (0.316 W). If the input signal level to be measured is greater than +25 dBm, use a High Power Attenuator to prevent damage when you directly connect the signal to the instrument or connect the signal from the coupling port of a directional coupler.
Page 540: Selecting Measurement Mode
JD780A Series Analyzers Figure 285 OTA connection JD785A/JD786A JD788A CAUTION If the input signal level to be measured is less than 0 dBm, set 0 dB attenuation or turn on the preamp to have better dynamic range for the OTA testing. Selecting measurement mode Procedure Press the MODE hard key.
Page 541 JD780A Series Analyzers Procedure To automatically set the reference and attenuation level: Press the AMP/SCALE hard key. Press the Auto Scale soft key. Each time you press this key, both of the Y-axis scale and input attenuation level change to be optimized with some margin.
Page 542: Setting Average
JD780A Series Analyzers External offset You can turn the External Offset on and manually set the external offset value. An offset consists of a cable loss and a user offset and the measurement result shows the value reflecting both offset values. When the external offset value is set at 40 dB in the Spectrum mode, the measurement result compensates 40 dB at both the Spectrum Analyzer and Signal Analyzer modes Procedure...
Page 543: Making Channel Scanner Measurements
JD780A Series Analyzers NOTE Selecting Sweep Mode > Fast may reduce the measurement accuracy, but you can use this fast sweep mode to identify the existence of interfering signals. Making channel scanner measurements Setting channel You need to set the channel to be scanned. Procedure Press the FREQ/DIST hard key.
Page 544: Making Frequency Scanner Measurements
JD780A Series Analyzers Figure 286 Channel scanner measurement NOTE You can use the LIMIT hot key to analyze your measurements with the display line and channel limit. See “Setting limit for channel scanner” on page 547 for more information. Making frequency scanner measurements Setting frequency You need to set the frequency to be scanned.
Page 545: Measurement Example
JD780A Series Analyzers Measurement example Figure 287 Frequency scanner measurement NOTE You can use the LIMIT hot key to analyze your measurements with the display line and channel limit. See “Setting limit for channel scanner” on page 547 for more information. Making custom scanner measurements Setting channel/frequency You can customize channels or frequencies to be scanned as you desire.
Page 546: Measurement Example
JD780A Series Analyzers The instrument displays a corresponding center frequency for the channel number. To set the integration bandwidth for the selected index, complete the following steps: Press the Integration Bandwidth soft key. Enter a value by using the numeric keys. You can also use the rotary knob. Select the unit: GHz, MHz, kHz, or Hz.
Page 547: Analyzing Measurements
JD780A Series Analyzers NOTE You can use the LIMIT hot key to analyze your measurements with the display line and channel limit. See “Setting limit for channel scanner” on page 547 for more information. Analyzing measurements Setting limit for channel scanner Procedure To use the display line: Press the LIMIT hot key.
Page 548: Using Power Meter
Using Power Meter This chapter provides instructions for using the RF Power Meter function and the Optical Power Meter function. Topics discussed in this chapter are as follows:  Introduction ..........................549  Display overview ........................549  Performing internal RF power measurements ................. 549 ...
Page 549: Introduction
JD780A Series Analyzers Introduction The Power Meter of the JD780A series uses power measurement based on spectrum measurement results to provide an accurate power measurement result unlike a general spectrum analyzer, of which power accuracy may be degraded if the span is set too wide. The power meter also provides Pass/Fail indication with user-defined lower and upper limits.
Page 550: Connecting A Cable
JD780A Series Analyzers Connecting a cable Direct connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the Power amplifier output port of BTS as shown in Figure 290. Figure 290 Direct connection JD785A/JD786A JD788A Indirect connection Procedure Connect the Spectrum Analyzer RF In port of the JD780A series and the monitor (test) port of BTS as shown in Figure 291.
Page 551: Selecting Measurement Mode
JD780A Series Analyzers Selecting measurement mode Procedure Press the MODE hard key. Select More (1/2) > Power Meter > Internal RF Power Meter. Setting frequency You need to set the frequency range to be measured either with the center frequency and span or with the start and stop frequencies.
Page 552: Setting Amplitude
JD780A Series Analyzers Toggle the Link soft key to select the sweep direction and select Fwd for forward or Rev for reverse. To set the channel number, complete the following steps: Press the Channel Number soft key. Enter a value by using the numeric keys. Press the Enter soft key or ENTER hard key to complete the entry.
Page 553: Setting Sweep Mode
JD780A Series Analyzers Press the dB soft key. Setting sweep mode The default setting of the sweep mode is Continue. If you want to hold the measurement, you can change the sweep mode. Procedure To select the single sweep mode: Press the SWEEP hot key.
Page 554: Measurement Example
JD780A Series Analyzers Measurement example Figure 292 Internal power measurement Performing external RF power measurements This instrument performs radio output power measurement with the use of optional external power sensors including JD730 series power sensors. It serves as the highly accurate RF power meter and gives wider range of power measurement.
Page 555: Selecting Measurement Mode
JD780A Series Analyzers output port of BTS. The JD780A series automatically detects and initializes the power sensor connected to the instrument. Connecting an external power sensor is mandatory Table 24 Terminating power sensor connection JD788A JD785A/JD786A Directional power sensor connection Procedure Connect an external power sensor to the USB Host port of the JD780A series and to the RF output port of BTS as shown in Figure 293.
Page 556: Setting Amplitude
JD780A Series Analyzers Procedure Press the FREQ/DIST hard key. Press the Frequency soft key. Enter a value by using the numeric keys. You can also use the rotary knob. Select the unit: GHz, MHz, kHz, or Hz. Setting amplitude Procedure Press the AMP/SCALE hard key.
Page 557: Measurement Example
JD780A Series Analyzers – 2 to display the reading with two decimal places To set a threshold and view the results with Pass/Fail indication, complete the following steps: Press the LIMIT hot key. Toggle the Limit soft key between On and Off to enable or disable the Pass/Fail indication. Press the High Limit soft key, and then enter a threshold value.
Page 558: Selecting Measurement Mode
JD780A Series Analyzers Procedure Connect a MP-series optical power sensor to the USB Host port of the JD780A series as shown in Figure 295. The OPS indicator appears in the system status bar. Connect the optical cable from the output port of BTS to the power meter. Figure 295 Optical power sensor connection JD788A JD785A/JD786A...
Page 559: Making A Power Measurement
JD780A Series Analyzers Making a power measurement Procedure After setting the parameters, read the absolute measurement value in dBm on the screen. Figure 296 is an example of the measurement screen. To view a relative power, see “Reading a relative power” on page 559. To view the result in mW, complete the following steps: Press the AMP/SCALE hard key.
Page 560: Holding A Measurement
JD780A Series Analyzers Do one of the following: – To let the instrument set the last measurement as a reference, complete the following steps: Toggle the Relative Reference soft key and select Last. Press the Reference Last soft key. NOTE To set or release reference, you can also press and hold the physical round button on the connected MP-series power meter for a few seconds until you hear a beep.
Page 561: Performing Fiber Inspection
Performing Fiber Inspection This chapter provides instructions for using the fiber testing function with a P5000i fiberscope. Topics discussed in this chapter are as follows:  Introduction ..........................562  Display overview ........................562  Connecting a fiber microscope ....................562 ...
Page 562: Introduction
JD780A Series Analyzers Introduction Inspection of fiber optic connections is essential for the optimal performance and longevity of fiber optic connectivity. Throughout their lives, fiber connectors must be inspected, analyzed, and cleaned to maintain an acceptable level of functionality. The JD780A series makes it fast and easy to troubleshoot and certify that every connection at a cell site is optimized for a lifetime of performance.
Page 563: Selecting Measurement Mode
JD780A Series Analyzers Selecting measurement mode Procedure Press the MODE hard key. Select More (1/2) > Fiber Inspection. Configuring test parameters Selecting profile and tip You can select analysis profiles and inspection tips from the list. Procedure Press the MEASURE SETUP hot key. Press the Profile &...
Page 564: Performing Fiber Inspection
JD780A Series Analyzers – Test: Sets the capture button to function as Test. Pressing the Quickcapture button analyzes fiber image as like the Test soft key on your JD780A series. – Freeze: Sets the capture button to function as Freeze. Pressing the Quickcapture button captures fiber image as like the Freeze soft key on your JD780A series.
Page 565: Measurement Example
JD780A Series Analyzers Measurement example Figure 298 Captured fiber image Testing a fiber Procedure Connect the fiber to be inspected to the tip of your microscope P5000i. The live image of the fiber is displayed on the screen. See the user manual of your fiber microscope for details on using the P5000i. Focus the image by rotating the Focus Control on the P5000i until the image is in focus.
Page 566: Measurement Example
JD780A Series Analyzers Tap the Apply button or press the Apply soft key to save and return to the previous state. Press the Live soft key to return to the live image screen or press the Quit soft key to exit the fiber inspection.
Page 567: Appendix
Appendix Topics discussed in this chapter are as follows: Appendix A – Product general information ................568  Appendix B – Cable list ......................570  Appendix C – Band, frequency & channel standard..............571  Appendix D – VSWR-Return loss conversion table ..............574 ...
Page 568: Appendix A - Product General Information
JD780A Series Analyzers Appendix A – Product general information JD785A/JD786A JD788A Supplemental Information Inputs and Outputs RF In Spectrum Analyzer Connector Type-N female Type-N female Impedance 50 Ω 50 Ω Nominal Damage Level >+33 dBm, >±50 V DC >+33 dBm, >±50 V DC Nominal Reflection/RF Out Cable and Antenna Analyzer...
Page 569 JD780A Series Analyzers JD785A/JD786A JD788A Supplemental Information Power External DC Input 18 V DC 18 V DC Power Consumption 37 W 37 W 49 W maximum when charging battery Battery 10.8 V, 7800 mA-h 10.8 V, 7800 mA-h Lithium Ion Operating Time >...
Page 570: Appendix B - Cable List
JD780A Series Analyzers Appendix B – Cable list Relative Propagation Nominal Attenuation dB/m Cable Type Velocity (V¦) @ 1000 MHz FSJ1-50A 0.84 0.197 FSJ250 0.83 0.134 FSJ4-50B 0.81 0.119 HCC 12-50J 0.915 0.092 HCC 158-50J 0.95 0.023 HCC 300-50J 0.96 0.014 HCC 312-50J 0.96...
Page 571: Appendix C - Band, Frequency & Channel Standard
JD780A Series Analyzers Appendix C – Band, frequency & channel standard Uplink Downlink Standard Start Freq Stop Freq Start Freq Stop Freq Valid Channels Valid Channels (MHz) (MHz) (MHz) (MHz) GSM 450 450.40 457.60 259≤n≤293 460.40 467.60 259≤n≤293 GSM 480 478.80 486.00 306≤n≤340...
Page 572 JD780A Series Analyzers Band 21 (1500-General) 1447.9 1462.9 462≤n≤512 1495.9 1510.9 862≤n≤912 Band 22 (3500-General) 3410.0 3490.0 4437≤n≤4813 3510.0 3590.0 4662≤n≤5038 Band 25 (1900-General) 4887≤n≤5188 5112≤n≤5413 1850.0 1915.0 1930.0 1995.0 Band 25 (1900-Additional) 5212≤n≤5512 5437≤n≤5737 Band 26 (800-General) 5537≤n≤5688 5762≤n≤5913 814.0 849.0 859.0...
Page 573 JD780A Series Analyzers ProfR14 (7 3653) 3603.500 3696.250 0≤n≤53 3653.50 3746.25 0≤n≤53 ProfR15 (7 3753) 3703.500 3796.250 0≤n≤53 3753.50 3846.25 0≤n≤53 ProfR26 (10 5275) 5275.000 5335.000 55≤n≤67 ProfR27 (10 5740) 5740.000 5830.000 148≤n≤166 ProfR28 (10 5735) 5735.000 5845.000 147≤n≤169 ProfR29 (8.75 2304) 2304.375 2395.625 0≤n≤730...
Page 574: Appendix D - Vswr-Return Loss Conversion Table
JD780A Series Analyzers Appendix D – VSWR-Return loss conversion table This information is for the Cable and Antenna Analyzer mode of the JD785A Base Station Analyzer and the JD786A RF Analyzer.  Return Loss=20log (VSWR+1/VSWR-1) (dB) R.L./20 R.L./20  VSWR=(10 +1/10 VSWR Return...
Page 575: Appendix E - Cyclic Prefix Table
JD780A Series Analyzers Appendix E – Cyclic prefix table This information is for the LTE – FDD Signal Analyzer mode and the LTE – TDD Signal Analyzer mode of the JD785A Base Station Analyzer and the JD788A Signal Analyzer. Following table shows OFDM parameter details by different bandwidth.
Page 576: Appendix F - Motorola Cdma/Ev-Do Lmf
JD780A Series Analyzers Appendix F – Motorola CDMA/EV-DO LMF Motorola’s CDMA/EV-DO base stations (BTS) are optimized with the assistance of Local Maintenance Facility (LMF), a Motorola’s software tool that interfaces with the cell site and the instrument. The optimization process identifies the accumulated loss (or gain) for all receiving and transmitting paths at the cell site and stores that value in the system’s database.
Page 577: Performing A Lmf Test
JD780A Series Analyzers Figure 302 Using external power sensor Performing a LMF test Procedure Press the SYSTEM hot key. To set the IP address, complete the following steps: Select System Configuration > Ethernet Config > IPv4. Toggle the Mode soft key and select Static. Press the Field >...
Page 578: Appendix G - Bluetooth Connection
JD780A Series Analyzers Appendix G – Bluetooth connection JD780A series’ Bluetooth mode is used for communication between the instrument and your computer with JDRemote or a storage device in order to use the following services if needed.  Bluetooth Personal Area Network (PAN) profile service for JDRemote. ...
Page 579: Setting Up Communication In Application
JD780A Series Analyzers Plug in the Bluetooth adapters to the USB port of the computer and the instrument. The instrument detects the connected adapter and turns the Bluetooth mode on automatically. The Bluetooth icon appears in the status bar at the top of the instrument screen. Double-click the BlueSoleil Space icon on the computer desktop to launch the application if not opened already.
Page 580: Turning Bluetooth Mode On/Off Manually
JD780A Series Analyzers Select the 740A/B, 780A/B Series, and then click the OK button. Right-click on the JDRemote window, and then click the Communication. The Communication dialog box appears. Select the TCP/IP, and then enter 192.168.10.10 without dots. Click OK to finish the communication setup. Right-click on the JDRemote window, and then click the Connect.
Page 581: Appendix H - Device Driver Installation
JD780A Series Analyzers Appendix H – Device driver installation JD780A series can be controlled from the application software JDViewer or JDRemote installed on your computer. You must install driver software for the instrument on to the computer if USB Client connection is used for communication.
Page 582: Appendix I - Ordering Information
JD780A Series Analyzers Appendix I – Ordering information JD785A Base Station Analyzer JD785A 9 kHz to 8 GHz Spectrum Analyzer 5 MHz to 6 GHz Cable and Antenna Analyzer 10 MHz to 8 GHz RF Power Meter Internal mode Options NOTE: Upgrade options for the JD785A use the designation JD785AU before the respective last three-digit option number.
Page 583: Jd786A Rf Analyzer
JD780A Series Analyzers Requires Test Cable Highly recommended adding JD785A010 Highly recommended adding G70005035x and/or G70005036x Standard accessories can be purchased separately. JD786A RF Analyzer JD786A 9 kHz to 8 GHz Spectrum Analyzer 5 MHz to 6 GHz Cable and Antenna Analyzer 10 MHz to 8 GHz RF Power Meter Internal mode...
Page 584: Jd788A Signal Analyzer
JD780A Series Analyzers JD788A Signal Analyzer JD788A 9 kHz to 8 GHz Spectrum Analyzer 10 MHz to 8 GHz RF Power Meter Internal mode Options NOTE: Upgrade options for the JD788A use the designation JD788AU before the respective last three-digit option number.
Page 585: Jd780A Series Common Options
JD780A Series Analyzers JD780A Series Common Options Optional RF Power Sensors JD731B Directional Power Sensor. Peak and Average power 300 to 3800 MHz JD733A Directional Power Sensor. Peak and Average power 150 to 3500 MHz JD732B Terminating Power Sensor. Average Power 20 to 3800 MHz JD734B Terminating power sensor, Peak Power 20 to 3800 MHz JD736B...
Page 586 JD780A Series Analyzers Optional RF Yagi Antennas G700050364 RF Yagi Antenna Type-N(f), 806 MHz to 896 MHz, 10.2 dBd G700050365 RF Yagi Antenna Type-N(f), 866 MHz to 960 MHz, 10.2 dBd G700050363 RF Yagi Antenna Type-N(f), 1.75 GHz to 2.39 GHz, 9.8 dBd G700050366 RF Yagi Antenna SMA(f), 700 MHz to 4 GHz, 1.85 dBd Optional RF Adapters...
Page 587: Appendix J - Rohs Information
JD780A Series Analyzers Appendix J – RoHS information This appendix describes the RoHS (Restriction of Hazardous Substances) information, which is a mandatory requirement from China. The RoHS directive consists in the restriction on the use of certain hazardous substances in electrical or electronic equipment sold or used in the European Union, after July 1, 2006. These substances are: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ethers.
Page 588: Appendix K - On-Screen Keyboard
JD780A Series Analyzers Appendix K – On-screen keyboard You can use the on-screen keyboard to type in texts, file names, and folder names. Adding or deleting letters Procedure Tap keys on the on-screen keyboard. As you type, each letter is displayed in the name field. If you want to change the letter case between uppercase and lowercase, tap the Caps key.
Page 589: Appending A Keyword
JD780A Series Analyzers Figure 305 Edit keywords keyboard Appending a keyword You can append a factory-stored or custom-defined keyword, as you want. Procedure Tap the Append Keywords bar on the on-screen keyboard. The append keywords window appears. To append a keyword, complete the following steps: Select the keyword tag button to view available keywords for the tag.
Page 590 JD780A Series Analyzers Figure 306 Append keywords window Appendix...
Page 591: Appendix L - Supported Map Display Parameters
JD780A Series Analyzers Appendix L – Supported map display parameters Your CellAdvisor instrument provides the RAN Performance Indicator feature in the LTE signal analyzer mode. Setting map display parameters that your instrument supports is important to have test results as you desire as the instrument supports RANAdvisor’s map display parameters with limitations.
Page 592 Network and Service Enablement Regional Sales North America Latin America Asia Pacific EMEA www.jdsu.com Toll Free: 1 855 ASK JDSU Tel: +55 11 5503 3800 Tel: +852 2892 0990 Tel: +49 7121 86 2222 Tel: +1 240 404 2999 Fax:+55 11 5505 1598 Fax:+852 2892 0770 Fax:+49 7121 86 1222 Fax:+1 240 404 2195...

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