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Ceyear 3986 Series User Manual

Noise figure analyzer
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3986 Series
Noise Figure Analyzer
User Manual
China Electronics Technology Instruments Co. Ltd

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  • Page 1 3986 Series Noise Figure Analyzer User Manual China Electronics Technology Instruments Co. Ltd...
  • Page 3  3986-H98, English kit: English display, English manual, English interface, and English operating system. Version: A.1, December 2017, China Electronics Technology Instruments Co., Ltd. Address: No.98, Xiangjiang Road, Qingdao City, China Tel: +86-0532-86896691 Website: www.ceyear.com E-mail: sales@ceyear.com Postal code: 266555...
  • Page 4 Technology Instruments Co., Manual Authorization Foreword Ltd. is certified by ISO 9001 This manual may be subject to and ISO 14001 standards. Thank you for choosing the change without notice. CETI 3986 series noise figure Safety Precautions reserves all the rights to the analyzer developed final explanation for all the...

  • Page 7: Table Of Contents

    3986 Series noise figure analyzer Table of Contents Table of Contents 1 About This Manual ..................1 1.1 About This Manual ......................1 1.2 Related Documents ....................... 2 2 Overview..................... 5 2.1 General .......................... 5 2.2 Safety guide ........................5 2.2.1 Safety signs ...........................
  • Page 8 3986 Series noise figure analyzer Table of Contents 4.1.1 Measurement mode ........................67 4.1.2 Mode Setup..........................68 4.1.3 System Connection ........................74 4.1.4 Selection of External Local Oscillators ..................77 4.1.5 Examples of Basic Amplifier Measurement ................78 4.2 Advanced operation guide ................... 82 4.2.1 Guide for Upconverter and Downconverter Measurement ...........
  • Page 9 3986 Series noise figure analyzer Table of Contents 5.4.5【Print】Key ..........................158 5.4.6【Help】Key ..........................158 6 Remote Control ..................159 6.1 Remote control basis ....................159 6.1.1 Remote interface ........................159 6.1.2 Message ............................. 161 6.1.3 SCPI ............................162 6.1.4 Command sequence and synchronization ................169 6.1.5 Status reporting system ......................
  • Page 10 8.5 Performance Characteristics Test ................193 8.5.1 Recommended test methods ....................193 8.5.2 Performance Test Record Table of 3986 Series Noise Figure Analyzers ......203 8.5.3 Performance Test Auxiliary Table of 3986 Series Noise Figure Analyzers ...... 204 Appendixes ....................209 Appendix A Terminology ....................
  • Page 11 3986 Series noise figure analyzer Table of Contents Measurement Mode ..........................211 Loss Comp ............................211 Preselector ............................212 ..............................212 Spurious responses ..........................212 Frequency range ..........................213 RF attenuation ............................. 213 Input impedance..........................213 Gain compress ............................ 213 IF attenuation ............................
  • Page 12 3986 Series noise figure analyzer Table of Contents...

  • Page 13: About This Manual

    The basic operation guide is intended for users who are not familiar with the use of the 3986 series noise figure analyzer. The guide systematically introduces and lists the various settings of the instrument so that users may gain a basic understanding of the noise figure analyzer.

  • Page 14: Related Documents

    Programming Manual Quick Start Guide This manual introduces the settings of the 3986 series noise figure analyzer as well as the basic operating methods of measurement with the aim of enabling users to quickly understand the features and basic local and remote control operation of the instrument. Main chapters included in this manual are as follows: ...
  • Page 15 1 About This Manual 1.2 Related Documents programming, and I/O driver library, for the purpose of guiding the user to master the SCPIs and methods of the instrument quickly and comprehensively. Main chapters included in this manual are as follows: ...
  • Page 16 1 About This Manual 1.2 Related Documents...

  • Page 17: Overview

    Safety guide…………………………………………………………………………………………………5 2.1 General The 3986 series noise figure analyzer can cover a frequency range of 10MHz to 50GHz. It contains a highly sensitive receiver, user-friendly interface, high-definition dual-channel display, an abundance of external connection ports, dual-noise source driver, etc. It is able to measure the noise figure of amplifiers, downconverters and upconverters;...

  • Page 18: Safety Signs

    2 Overview 2.2 Safety guide  Operation precautions…………………………… ………………………………………………………8  Maintenance……………………………………… ………………………………………………………9  Transport……………………………………………… ……………………………………………………9  Waste disposal/environmental protection…………… …………………………………………………10 2.2.1 Safety signs 2.2.1.1 Safety signs on the product The warning signs on the product are given as follows (see Table 2.1): Table 2.1 Safety Signs on the Product Symbol Meaning...

  • Page 19: Operation Status And Position

    2.2.2 Operation status and position Before instrument operation, please pay attention to the followings: Unless otherwise stated, the 3986 series noise figure analyzer must satisfy the following environmental requirements: be placed on a flat surface. The maximum altitude at which the instrument is operated and transported should not be greater than 4,600 m.

  • Page 20: Electrical Safety

    2 Overview 2.2 Safety guide 2.2.3 Electrical safety Electrical safety precautions of the instrument: Before turning on the instrument, ensure that the supply voltage matches the indicated supply voltage of the apparatus. With reference to the power requirements on the instrument's rear panel, a three-core power cord is used to ensure reliable grounding of the power wire during use.

  • Page 21: Maintenance

    2 Overview 2.2 Safety guide Use connectors and cables that comply with the specified conditions and check them before carrying out any operations. Ensure that the power of the RF input port of the instrument is less than the maximum safe input level of +15dBm to avoid burning the instrument.

  • Page 22: Waste Management/Environmental Protection

    2 Overview 2.2 Safety guide 2.2.7 Waste management/environmental protection Please do not dispose of equipment marked with batteries or rechargeable batteries with unsorted waste. These wastes should be individually collected and disposed of at an appropriate collection point or through the customer service center of the manufacturer. Please do not dispose of electronic equipment with unsorted waste.

  • Page 23: Start Guide

    3 Start Guide 3.1 Preparation before Use 3 Start Guide This Chapter describes the preparation for use, instructions for front and rear panels, setting of analyzer reset status, file operations, use of form processing and instructions for basic measurements of 3986 Series Noise Figure Analyzer, to enable users get a preliminary knowledge and the measurement process of the noise figure analyzer.
  • Page 24 3 Start Guide 3.1 Preparation before Use Attention During instrument operation, please pay attention to the following aspects: An improper operating position or measurement setting can damage the instrument or appliances connected to it. Before powering on the instrument, please pay attention to the followings: To ensure that the fan blade and radiating hole are unobstructed, keep the instrument at least 15cmaway from the wall, and ensure that all ventilation holes of the fan are unobstructed;...
  • Page 25 3 Start Guide 3.1 Preparation before Use — Packing list Noise source option — 16603 — 16604 3.1.1.2 Environmental requirements Series 3986 Noise Figure Analyzer shall be operated in a place meeting the following environmental requirements: Operating environment The operating environment shall meet the requirements specified in Table 3.2. Table 3.2 Requirements for Operating Environment of Series 3896 Working temperature 0℃~40℃...
  • Page 26 3 Start Guide 3.1 Preparation before Use Voltage range: The above anti-static measures can‘t be taken in a place where the voltage exceeds 500 V. 3.1.1.3 Power on/off Precautions before power-on It is necessary to check the following items before powering on the instrument: Confirmation of power supply parameters Series 3986 Noise Figure Analyzer is equipped with a built-in 220VAC power module (using 220VAC power supply) or 110V/220V adaptive AC power module (optional, using 110VAC or 220VAC power...
  • Page 27 3 Start Guide 3.1 Preparation before Use Grounding Poor or incorrect grounding may cause instrument damage and even personal injury. Before energizing the Noise Figure Analyzer, it must be ensured that the power supply is properly grounded. Please use the power socket with a protective ground. Do not replace the protective ground wire with an external cable, power cord or autotransformer without grounding protection.
  • Page 28 3 Start Guide 3.1 Preparation before Use Fig. 3.2 Power Switch on Rear Panel of Series 3986 Step 2. Do not connect any device to the Noise Figure Analyzer before power-on; turn on the power switch of the front panel, as shown in Fig. 3.3 and the indicator above the power switch of front panel turns to green.
  • Page 29 3 Start Guide 3.1 Preparation before Use and after several seconds, the analyzer powers off when the indicator above the power switch turns from green to yellow. Step 2. Turn the power switch on the rear panel to OFF position or disconnect the power supply of the analyzer.
  • Page 30 3 Start Guide 3.1 Preparation before Use Fig. 3.4 Diagram - Connecting Connector Step 2. As shown in Fig. 3.5, move both connectors straight together, so that they can be connected smoothly; rotate the threaded sleeve of connector (rather than the connector itself) until it is tightened;...
  • Page 31 3 Start Guide 3.1 Preparation before Use Torque direction Stop applying a force when the handle bends Fig. 3.7 Use of Torque Wrench 3.1.1.5 User checks Series 3986 Noise Figure Analyzer shall be checked, after being powered on for the first time, whether it is working properly for subsequent measurements.

  • Page 32: Configuration Of Operating System

    3 Start Guide 3.1 Preparation before Use Self-test Self-test is not necessary every time the instrument is turned on. Self-test is only needed to be done when the analyzer works abnormally. Step 1. Press【System/Local】key to go to the system menu; Step 2.
  • Page 33 3 Start Guide 3.1 Preparation before Use reconfigure Windows settings; run other applications. Attention Third-party software may affect the analyzer’s performance: Series 3986 Noise Figure Analyzer is equipped with open Windows environment, and installing other third-party software may affect the analyzer‘s performance Only software tested by the manufacturer and compatible with the main unit software can be run.
  • Page 34 3 Start Guide 3.1 Preparation before Use b) Connecting keyboard Windows 7 system will automatically detect the USB keyboard connected to the analyzer and default the input language as Chinese (ZH) - Simplified - US; the keyboard properties can be configured via [Start]→[Control Panel]→[Language and Region]→[Keyboard and Language] menus and buttons.
  • Page 35 3 Start Guide 3.1 Preparation before Use Step 1. Press [Start], right click [Computer], and click [Properties]→[Change Settings]→[Change], as shown in 3.11; Step 2. Edit or enter new host name in ―Computer Name‖ box, click [OK] and reboot. Fig. 3.11 Change Host Name b) Configuring IP address, subnet mask and default gateway Press【System/Local】→[Interface Config]→[Internet Config] and the network connection setting page pops up;...
  • Page 36 3 Start Guide 3.1 Preparation before Use manufacturer advises to enable the firewall protection. Before delivery, Series 3986 Noise Figure Analyzer has been set to enable firewall protection for port connections related to system and all remote operations. Only the administrator has the permission to change the firewall settings. Configuring BIOS Settings have been configured for the analyzer in BIOS.
  • Page 37 3 Start Guide 3.1 Preparation before Use System maintenance Windows 7 system backup It is recommended to backup the system regularly; to do this you can use the System Recovery Tool to ―3.1.2.5 System backup completely backup the analyzer data and system, see recovery‖.

  • Page 38: Routine Maintenance

    3 Start Guide 3.1 Preparation before Use Step 3. Switch on the analyzer and after the display of system information, an OS menu with timer appears: [Windows 7] [System Recovery Tool] When the timer counts down to 0, use the Up/down arrows on the standard keyboard to highlight the [System Recovery Tool] and press Enter after selecting it.

  • Page 39: Description Of Front And Rear Panels

    3 Start Guide 3.2 Description of front and rear panels Step 3. Dry the display panel with clean and soft cotton cloth; Step 4. Connect the power cord after the detergent dries thoroughly. 3.1.3.2 Input port maintenance There is an input port (50Ω) on the front panel of Series 3986 Noise Figure Analyzer, which may affect measurement results if damaged or having dust accumulated inside;...
  • Page 40 3 Start Guide 3.2 Description of front and rear panels Power button Numeric key area 13. USB port System function keys Knob and arrow keys 14. Headphone jack Display screen Input ports 15. Volume key Soft keys 10. Normal noise source drive port 16.
  • Page 41 3 Start Guide 3.2 Description of front and rear panels Soft key operations When a soft key is pressed, one of the following actions will be performed:  open a dialog box to input data;  open or close a function; open a sub-menu (only for soft key with the symbol ―▶‖).
  • Page 42 3 Start Guide 3.2 Description of front and rear panels Press this key to go to the Mode Setup menu, including DUT Setup, Ext OL Config, Mode Setup Uncertainty Calculator and Extend Setup. To set the measuring bandwidth. Loss Comp Press this key to go to the Loss Comp menu.
  • Page 43 3 Start Guide 3.2 Description of front and rear panels 【←】key To delete the input to the left of cursor. 【Enter】key To confirm the non-dimensional input as a new value. 3.2.1.8 Knob and arrow keys Knob functions  To increase (clockwise) or decrease (counterclockwise) the instrument parameters by specified steps when inputing numbers;...

  • Page 44: Description Of Rear Panel

    3 Start Guide 3.2 Description of front and rear panels 3.2.1.12 【Prev】key Press the【Prev】key to go back to parent menu of the soft menu. 3.2.1.13 USB interface Standard Type A USB2.0 port. To connect USB peripherals such as keyboard, mouse, CD driver and hard drive.

  • Page 45: Narrowband Output

    3 Start Guide 3.2 Description of front and rear panels Fig. 3.15 Rear Panel of Series 3986 Noise Figure Analyzer Power input port LAN interface 13. IF output 1 Power switch USB slave port 14. IF output 2 Grounding terminal Positioning antenna input 15.
  • Page 46 3 Start Guide 3.2 Description of front and rear panels analyzer and high-speed data transfer. 3.2.2.9 Positioning antenna input Not available for this series. 3.2.2.10 Rear panel RF input Optional port depending on the analyzer‘s frequency range, used for input connections when building test system.

  • Page 47: Basic Operating Instructions

    3.3.1 Display annotation The measurement display annotation, shown in Fig. 3.17, is referenced by numbers. Table 3.9 describes each function, followed with detailed information. Fig. 3.17 Measurement display of 3986 series NFA Table 3.9 Display annotation item description Graphic Function description...
  • Page 48 3 Start Guide 3.3 Basic operating instructions Result input area, for entering measurement setup data Mode setup column, showing the current mode information, such as DUT type, sideband, LO control, LO mode, frequency property and so on Marker display column Upper graph measurement result, controlled by [Result - Trc 1] menu key Lower graph measurement result, controlled by [Result - Trc 2] menu key Result - Trc 1 measurement...
  • Page 49 3 Start Guide 3.3 Basic operating instructions 3.3.1.4 Marker displays column This column displays the trace 1 and trace 2 results on X and Y axes when markers are activated under graph mode. 3.3.1.5 Upper graph measurement result The upper graph measurement result can be selected through the [Result-Trc 1] menu. The options include noise figure, gain, Y-factor, Teffective, PHot and PCold.

  • Page 50: User Interaction

    3 Start Guide 3.3 Basic operating instructions 3.3.1.10 Instrument status bar The status bar below the graphs displays the instrument status or error messages (if any). Measurement progress The left of the status bar below the graphs displays the progress of current operation. Calibration state Display the calibration as valid.

  • Page 51: Set Preset And Poweron States

    3.3.3 Set preset and poweron states The 3986 series NFA has the following preset and poweron states: Factory default: The default configuration originally set by developers at factory, which is also the optimum setting that can satisfy most measurements and cannot be changed by the user.

  • Page 52: Perform File Operations

    Except trace files, all other files previously stored by the users can be reloaded to the NFA. 3.3.4.2 Saving/loading files The 3986 series NFA provides the file saving/loading function. Saving files Saving files means to save files (limit lines, ENR tables, traces, frequency lists and loss compensation tables) to the specified directory.
  • Page 53 3 Start Guide 3.3 Basic operating instructions Fig. 3.18 File saving display Attention If you want to use on-screen keyboard to enter the file name, be sure to open the on-screen keyboard before the Windows operation display appears, i.e., before Step 2. Loading files Loading files means to load data files and state files previously stored on the disk back to the NFA measurement program for use.
  • Page 54 3.3 Basic operating instructions Fig. 3.19 File loading display 3.3.4.3 Printing/saving screenshots The 3986 series NFA provides screenshots saving (as bmp format) and printing functions. Saving screenshots Use the following steps to save a screenshot: Step 1. Press the【Save】key. "Save as" dialog box appears, as shown in Fig. 3.20.
  • Page 55 NOTE Install the printer driver as follows: Before printing, you need to install the support printer driver to the 3986 series NFA. Step 1. Press the【Print】key. "Print" dialog box appears, as shown in Fig. 3.21. Fig. 3.21 Print dialog box Step 2.

  • Page 56: Input Enr

    There are two types of noise sources which are compatible with the 3986 series noise figure analyzer. The first type is a normal noise source, for example the 16603 series, normal Keysight 346 series noise source, etc.
  • Page 57 3 Start Guide 3.3 Basic operating instructions Common ENR Table Off mode To use different ENR tables for calibration and measurement, press the【ENR】key and the [Common Table] menu key to set it to [Common Table On Off]; see Fig. 3.24. Fig.
  • Page 58 3 Start Guide 3.3 Basic operating instructions Step 3. Press the [Model ID] menu key and enter the noise source model using an external keyboard and numeric keys. Step 4. Press the [Serial] menu key and enter the noise source serial number using an external keyboard and numeric keys.
  • Page 59 3 Start Guide 3.3 Basic operating instructions NOTE The data in the current ENR table still exists after the NFA is preset. You can insert a frequency/ENR pair into the ENR Table entry in any order, as the NFA automatically sorts the frequency list into ascending order.
  • Page 60 3.3.5.7 Using Smart Noise Source NOTE If there is a SNS connected to the NFA SNS DRIVE port, the 3986 series NFA, by default, selects the SNS as its noise source. If an SNS is not connected, the NFA uses the normal noise source.
  • Page 61 3 Start Guide 3.3 Basic operating instructions the automatic loading after connecting a SNS, set the Auto Load ENR to On. If you do not want to automatically load the ENR data to the common table from the SNS, set the Auto Load ENR to Off. If you have selected [Auto Load ENR On Off], you can use the [Fill from SNS] menu key to load the ENR data from the SNS.

  • Page 62: Set Measurement Frequencies

    Step 3. Press the [SNS Tcold] menu key, and set it to [SNS Tcold On Off]. Step 4. Press the [User Tcold from SNS] menu key. The 3986 series NFA loads the Tcold from the SNS and displays it in the User Tcold menu key.
  • Page 63 Step 5. Repeat Step 4 until your frequency list is completed. The frequency list with data entry is shown in Fig. 3.28. NOTE No matter which order is followed when you enter frequency values the 3986 series NFA continually sorts the values into ascending order.
  • Page 64 Fig.3.27 An empty frequency list Step 6. As you need, use the【File】key and [Save…] menu key to save the edited frequency list to the disk of the 3986 series NFA. For details of saving files, refer to―3.3.4 Perform file operations‖.

  • Page 65: Set Bandwidth And Average

    You can also use the 【▲】 and 【▼】 arrow keys or rotate the knob to change the bandwidth value. The 3986 series NFA provides 6 bandwidths for step change, which are 4MHz, 2MHz, 1MHz, 400kHz, 200kHz and 100kHz.
  • Page 66 3 Start Guide 3.3 Basic operating instructions Fig. 3.29 Corr/UnCorr mark NOTE If you change the frequency range to the value greater than the current calibration range, the NFA state is switched to UnCorr automatically; If you change the frequency range to the value less than the current calibration range, or if you change the measurement points, the corrected state of NFA maintains, however, a prompt ―User cal interpolated‖...
  • Page 67 3.3.8.2 Selecting RF calibration attenuation range When working in the RF frequency range of 10MHz to 4GHz, the 3986 series NFA has a default input attenuation range for calibration of 0dB to 20dB. The step value is 5dB. In the default mode, the calibration takes 5 sweeps as 5 attenuator ranges need to be calibrated.

  • Page 68: Display Measurement Result

    3 Start Guide 3.3 Basic operating instructions Table 3.13 Maximum microwave input power and measurement range of DUT Attenuation Maximum input power Approximate measurement range -35dBm Combined NF and gain of DUT＜35dB -30dBm Combined NF and gain of DUT＜40dB 10dB -25dBm Combined NF and gain of DUT＜40dB The measurement ranges given in Table 3.13 are obtained when the ENR of the noise source is...
  • Page 69 3 Start Guide 3.3 Basic operating instructions 3.3.9.1 Selecting the display format You can display the measurement result in: Graph Table Meter The dual-graph display is the default setting. The upper graph is the measurement trace of noise figure and the lower graph is the measurement trace of gain. In the Graph format and Meter format, you can choose to display two results.
  • Page 70 3 Start Guide 3.3 Basic operating instructions  Step 2. Press the [Result-Trc 1] or [Result-Trc 2] menu key to select the corresponding trace to display the result .  Step 3. Press the [Noise figure], [Gain], [Y-Factor], [Teffective], [PHot] or [PCold] menu key to select the result you want to display.
  • Page 71 3 Start Guide 3.3 Basic operating instructions NOTE When in single graph mode, pressing the Next Trace key displays the other single graph. Combining two graphs on the same graph You can combine the upper and lower graphs from a dual-graph display into a combined single graph. The title of the active trace is highlighted in green background.
  • Page 72 3 Start Guide 3.3 Basic operating instructions Fig. 3.36 Typical graph display with graticule switched off Switch display annotation on or off When the [Annotation On Off] is set, measurement settings and markers are displayed. This is the default setting. When the [Annotation On Off] is set, measurement settings and markers are not displayed, as shown in Fig.
  • Page 73 3 Start Guide 3.3 Basic operating instructions 3.3.9.4 Setting the scaling You can set the result‘s scale results in the active trace graph to view the result better. NOTE Enable the Autoscale function. The NFA will automatically set the upper limit, lower limit and scale/division to optimize the trace display, with the trace displayed in approximately 80% area of the window.
  • Page 74 3 Start Guide 3.3 Basic operating instructions Setting the reference level Step 1. Press the【Scale】key to access the scale setting menu. Some of these settings are only effective in graph format mode. Step 2. Press the [Ref Value] menu key, enter the value using numeric keys, and finish it using the [OK] menu key.
  • Page 75 3 Start Guide 3.3 Basic operating instructions shown in Fig. 3.39. When the markers are enabled, turn the knob to place the markers at the points on the trace you want to measure or use numeric keys and unit keys to enter the frequency of interest.

  • Page 76: Measure Fixed Frequency

    3 Start Guide 3.3 Basic operating instructions Searching with markers The Searching function allows you to place an active marker on the minimum or maximum point of the trace, while in normal or delta state. In normal marker state, the minimum or maximum point found is displayed;...
  • Page 77 3 Start Guide 3.3 Basic operating instructions You need to select an appropriate noise source, either a normal noise source or a SNS. The normal noise source input is connected to the +28V noise source drive port on the NFA front panel using a BNC cable and its output is connected to the input port of the NFA (50).
  • Page 78 3 Start Guide 3.3 Basic operating instructions Noise source Fig. 3.42 Calibration connection Step 12. Press the【Format】key, and the [Display Format] menu key to select the [Meter] menu key. Step 13. Connect the device under test between the noise source output and the NFA input. The measurement result is displayed in meter format, similar to Fig.

  • Page 79: Operation Guide

    4.1.1 Measurement mode The 3986 series NFA is able to measure the noise figure of an amplifier-type device or system and also display the gain result of the DUT. It is also able to measure the noise figure and gain of a quasi-linear device or system, such as an upconverter, downconverter and receiver.

  • Page 80: Mode Setup

    Fig. 4.2 Measurement mode setup display Basic amplifier mode setup The basic amplifier mode is the default setting of the 3986 series NFA when the instrument is switched on. You can also set the basic amplifier measurement mode as follows:...
  • Page 81 Operation guide 4.1 Basic operation guide 【Mode Setup】to access the mode setting menu. Step 2. Press the [DUT Setup] menu key and the [Amplifier] menu key to select the amplifier measurement mode. Step 3. In the mode setup display, set the system downconverter to Off. Step 4.
  • Page 82 Operation guide 4.1 Basic operation guide If the list mode is selected, you need to edit the sweep frequency list. Step 10. Activate the fixed IF frequency input box and set the IF frequency. Input the IF frequency with the numeric key, and press the corresponding unit key to complete the input. b) Fixed LO and variable IF In this mode, the external LO is locked at a fixed frequency and the NFA works within the IF frequency range of the system downconverter.
  • Page 83 Operation guide 4.1 Basic operation guide Variable LO and fixed IF In this mode, the NFA works at a fixed IF frequency of the DUT. The mode setup is as follows: Step 1. Press the【Preset】 key to return the instrument to the factory default state, and press the 【Mode Setup】to access the mode setting menu.
  • Page 84 Operation guide 4.1 Basic operation guide Step 4. Set the measurement sideband based on the specific operating sideband of the downconverter. The NFA provides three options for selection, the lower sideband (LSB), upper sideband (USB) and double sideband (DSB). Step 5. Enable the external LO control option, and set the external LO control to On or Off. In the fixed LO mode, it is normally set it to Off.
  • Page 85 Operation guide 4.1 Basic operation guide variable LO mode, it is recommended to set it to On. Step 6. Activate the external LO power input box and input the external LO power value with the numeric key and complete the input setting with the unit key. NOTE Upconverter works in the variable LO and fixed IF mode.

  • Page 86: System Connection

    Operation guide 4.1 Basic operation guide Step 8. Enable the measurement frequency type setup, and select and set the RF or IF value of the mixer. This example selects the IF-Input. This means to set the IF frequency of the mixer, and the instrument calculates the RF frequency of the mixer automatically.
  • Page 87 Operation guide 4.1 Basic operation guide Noise source Fig.4.4 Measurement Connection Diagram of Basic Amplifier Measurement Mode 4.1.3.2 System Downconverter Mode Steps for system connection: Step1. When a normal noise source is used, connect the noise source drive input end to the +28V noise source drive port on the noise figure analyzer panel with a BNC cable, and connect the noise source output to the RF input port of the system downconverter.
  • Page 88 Operation guide 4.1 Basic operation guide Step 3. After the calibration is completed, insert the DUT between the noise source output and the RF input port of the system downconverter for measurement. The measurement connection of the system downconverter mode is shown in Fig.4.6. Noise source Fig.4.6 Measurement Connection Diagram of System Downconverter Mode NOTE...

  • Page 89: Selection Of External Local Oscillators

    Operation guide 4.1 Basic operation guide Noise source Fig.4.8 Measurement Connection of Upconverter and Downconverter Measurement Mode NOTE The calibrations and measurement connections of the upconverter and downconverter are identical. A 10MHz time base frequency reference can be connected to lock the noise figure analyzer and local oscillator to the same frequency reference, for which the method is connecting the 10MHz reference output/input of the noise figure analyzer to the 10MHz reference input/output port of the local oscillator.

  • Page 90: Examples Of Basic Amplifier Measurement

    Operation guide 4.1 Basic operation guide measured noise figure of the frequency converter is higher than the actual noise figure. The power of the spurious signal of the local oscillator must be very low. If the spurious signal level of the local oscillator is high at a certain frequency, a peak value will appear on the IF when the noise figure is measured at the corresponding frequency point.
  • Page 91 Operation guide 4.1 Basic operation guide Step 1. Turn on the power switch and wait for the startup program of the NFA to be activated. For better measurement accuracy, it is recommended to warm up the NFA for more than 30 minutes. Step 2.
  • Page 92 Operation guide 4.1 Basic operation guide Fig.4.10 Typical Graph Display Result after Calibration After the calibration is completed, the correction status at the bottom of the display screen will change from "Uncorr" to "Corr" automatically. If the DUT is not connected, the displayed values of noise figure and gain are close to 0 dB.
  • Page 93 Operation guide 4.1 Basic operation guide Step 3. Connect the noise source output to the DUT input as shown in Figure 4.12. After the connection is completed, the measurement result will be displayed on the display screen of the noise figure analyzer.

  • Page 94: Advanced Operation Guide

    4.2 Advanced operation guide This part introduces the relatively complicated measurement and operation procedures of 3986 series noise figure analyzer, mainly including the measurement guide and examples of upconverter and downconverter, measurement guide and examples of system downconverter mode, frequency limit, loss compensation and limit lines, so as to help the user to use the noise figure analyzer with agility and master its extended functions.
  • Page 95 IF range of the upconverter and downconverter. When the converter operates in variable LO mode, the default settings of the start frequency and stop frequency of 3986 series noise figure analyzer correspond to the RF range of the DUT; when the converter operates in fixed LO mode, the default settings of the start frequency and stop frequency correspond to the IF range of the DUT.
  • Page 96 Figure 4.15 Sideband Description The 3986 series noise figure analyzer is capable of measuring the single-sideband and double-sideband noise figure with the functions of setting, controlling the measurement and processing the data for the single sideband (upper sideband and lower sideband) and double sideband. The setting interface of sideband is as shown in Fig.4.16.
  • Page 97 Operation guide 4.2 Advanced operation guide 4.2.1.2 Single-sideband measurement Instructions for single-sideband (SSB) measurement Most of the mixers are used for the single-sideband (SSB) mixing (including the lower sideband and upper sideband). Therefore, the single-sideband noise figure shall be measured. For the single-sideband measurement, the image frequency sideband, LO leakage and other products of higher-harmonic mix shall be removed with the proper filter.
  • Page 98 Operation guide 4.2 Advanced operation guide Ampl Based on the itude frequencies of local oscillator, it may be necessary to Connect the output end of DUT with the filter to inhibit the local oscillator Mixing leakage signal The noise arriving at the frequency mixer through DUT filter...
  • Page 99 Operation guide 4.2 Advanced operation guide be used to enlarge the frequency gap between the upper sideband (LSB) and lower sideband (LSB) so as to conduct the sweep measurement at broader range and simplify the filter design. The filter may be low-pass type or band-pass type, and shall permit the signals within the lower sideband sweep frequency range but inhibits the signals within the upper sideband sweep frequency range.
  • Page 100 Operation guide 4.2 Advanced operation guide Filter passband Sweep point Stop Mixing Start Frequency Fig.4.20 Lower Sideband Measurement Upper sideband fixed LO variable IF Fig.4.21 shows how the noise figure analyzer tunes the receiving frequency at normal direction at the upper sideband fixed LO mode.
  • Page 101 Operation guide 4.2 Advanced operation guide process, and when DUT is not connected during the measurement, only the noise power within one frequency band of IF frequency is measured. If all performances between both sidebands remain unchanged, the power of received noise during the measurement will double (i.e. 3dB), but this will not happen during the calibration process.
  • Page 102 Operation guide 4.2 Advanced operation guide Sweep points Stop LSB input Mixing input LSB output Mixing Start Frequency Fig.4.23 Fixed IF Measurement b) Fixed LO As the local oscillator frequency remains unchanged, the IF frequency at the noise figure analyzer input port is at the sweep status, and Fig.4.24 shows how each signal frequency changes at this mode.
  • Page 103 Operation guide 4.2 Advanced operation guide Generally, the signal leakage has little influence on the noise figure measurement, unless the RF to IF leakage of mixer is larger. Local oscillator leakage The local oscillator power is usually higher than the maximum power of RF input signal used by the mixer.

  • Page 104: Examples Of Upconverter And Downconverter Mode Measurement

    Operation guide 4.2 Advanced operation guide oscillator leakage. If the local oscillator leakage signal frequency is lower than 4.5GHz, the local oscillator leakage will drive the front low noise amplifier of noise figure analyzer into the compressed state, thus resulting in the measurement error, and the increase of RF Attenuation will reduce the receiving sensitivity and measurement accuracy of noise figure analyzer.
  • Page 105 Operation guide 4.2 Advanced operation guide downconverter noise figure measurement and various related operations. In this example, downconverter works in the fixed IF and variable LO mode. Fixed IF frequency is set to 1.0GHz, RF frequency range is 3.7GHz to 4.2GHz, and the lower sideband measurement is used with a 4.7GHz~5.2GHz sweep LO.
  • Page 106 Operation guide 4.2 Advanced operation guide Step 5. Set the local oscillator IP address on the 3986 noise figure analyzer. Step 6. Set the local oscillator source IP address (the local oscillator source IP address shall be same with the local oscillator IP address which is set on the noise figure analyzer). Step 7.
  • Page 107 Operation guide 4.2 Advanced operation guide Fig. 4.26 Mode Setup interface Set the sweep point number and average value Step 1. Press the【Freq/Points】key to enter the Freq/Points setup menu. Step 2. Press [Points] menu key, input 21 with numeric key and press [Enter] menu key to complete the input.
  • Page 108 Operation guide 4.2 Advanced operation guide Fig.4.28 Typical calibrated results at the downconverter measurement mode Attention In the upconverter and downconverter measurement mode, if the DUT is not connected after the calibration, the gain and noise figure values are generally not zero. The reason is that the excess noise ratio corresponding to the upconverter and downconverter IF frequency is called by noise figure analyzer during calibration;...
  • Page 109 Operation guide 4.2 Advanced operation guide Fig.4.30 Typical measurement values at the downconverter measurement mode Upper sideband measurement The steps for upper sideband measurement are basically the same as those of lower sideband, but it is generally required to provide a filter which filters the image frequency component of lower sideband. In the mode setup, the "USB"...
  • Page 110 Operation guide 4.2 Advanced operation guide recommended period in order to obtain the accurate measurement value. Connect 10MHz reference if necessary. Step 2. Press the green【Preset】key to restore the noise figure analyzer to the factory default state. NOTE To lock the noise figure analyzer 3986 and local oscillator source at the same reference frequency, the 10MHz reference input or output at the rear panel of noise figure analyzer shall be connected to the 10MHz reference output or input of local oscillator source.
  • Page 111 Operation guide 4.2 Advanced operation guide Set the sweep point number and average value Step 1. Press the【Freq/Points】key to enter the Freq/Points setup menu. Step 2. Press [Points] menu key, input the number of sweep points with numeric key and press [Enter] menu key to complete the input.

  • Page 112: Guide For System Downconverter Mode Measurement

    Operation guide 4.2 Advanced operation guide Double sideband measurement The steps for double sideband measurement are basically the same as those of lower sideband, but the image frequency inhibition filters are not required for the RF input ports of upconverter and downconverter.
  • Page 113 Operation guide 4.2 Advanced operation guide 4.2.3.2 Downconverter measurement mode of double-sideband system System downconverter works at the variable LO and fixed IF mode. The noise figure analyzer supports the double sideband system downconverter measurement mode. The advantages of double sideband measurement include the wide frequency coverage and the low requirement for filter.
  • Page 114 Operation guide 4.2 Advanced operation guide 4.2.3.3 System downconverter measurement mode of Single sideband In the system downconverter measurement mode, the noise figure analyzer can perform the corresponding frequency conversion and local oscillator control according to the setting of upper sideband or lower sideband.
  • Page 115 Operation guide 4.2 Advanced operation guide Fig.4.36 shows how to select a filter for upper sideband system downconverter measurement. Amplitude Mixing Select the noise sideband to the system downconverter with the filter Based on the frequencies of local oscillator, it may be necessary to connect the output end of system downconverter with the filter...
  • Page 116 Operation guide 4.2 Advanced operation guide Sweep point Filter passband Stop Mixing Start Frequency Fig. 4.37 System Downconverter Mode Measurement of Lower Sideband b) Upper sideband measurement Fixed IF upper sideband mode is similar with the fixed IF lower sideband mode, and the filter shall be band-pass type or high-pass type.

  • Page 117: Examples Of System Downconverter Mode Measurement

    Operation guide 4.2 Advanced operation guide Sweep point Filter passband Stop Mixing Start Frequency Fig.4.39 System Downconverter Measurement Mode of Lower Sideband b) Upper sideband measurement Fig.4.40 shows that the noise figure analyzer tunes the receiving frequency at the fixed LO, variable IF and upper sideband mode.
  • Page 118 Operation guide 4.2 Advanced operation guide To be inhibited Low-pass filtering Upper sideband 52 57 60 (GHz) Fig.4.41 Downconverter Measurement of variable LO and fixed IF Lower Sideband System The main technical specifications of amplifier in the example are as shown in Table 4.2. This example may be modified to implement the lower sideband measurement at the fixed LO and variable IF mode.
  • Page 119 Operation guide 4.2 Advanced operation guide Step 5. Activate the sideband setup option and select the "LSB". Step 6. Enable the external LO control option, and set the external LO control to On or Off. In the variable LO mode, it is recommended to set it to On. Step 7.
  • Page 120 Operation guide 4.2 Advanced operation guide Set the sweep point number and average value Step 1. Press the【Freq/Points】key to enter the Freq/Points setup menu. Step 2. Press [Points] menu key, input 11 with numeric key and press [Enter] menu key to complete the input.
  • Page 121 Operation guide 4.2 Advanced operation guide Measurement For the noise figure and gain measurement for the second-stage correction as shown in Fig.4.45, connect the DUT to the system and measure it with the results of noise figure and gain as shown in Fig.4.46.
  • Page 122 Operation guide 4.2 Advanced operation guide To be inhibited High-pass filtering Lower sideband 60 (GHz) Fig.4.47 Measurement of Variable LO, Fixed IF, Upper Sideband and System Downconverter Double sideband measurement The steps for double sideband measurement are basically the same as those of lower sideband, but the image frequency inhibition filter is not required for the RF input port of downconverter.
  • Page 123 Operation guide 4.2 Advanced operation guide Noise source Fig.4.50 Schematic Diagram of Double Sideband Measurement 4.2.4.2 Fixed LO and variable IF Lower sideband measurement For this measurement mode, the local oscillator is locked at a fixed frequency point, the noise figure analyzer works in IF range of system downconverter, and the fixed LO and downconverter convert the RF frequency range to the IF range which can be received by the noise figure analyzer.
  • Page 124 Operation guide 4.2 Advanced operation guide Step 3. Activate the system downconverter setting item in the Mode Setup interface and set the SysDwnConv to "On" status. Step 4. Enable the LO mode setup, and select ―Fixed‖. Step 5. Activate the sideband setup option and select the "LSB". Step 6.

  • Page 125: Frequency Limit

    Operation guide 4.2 Advanced operation guide Noise source Fig.4.51 Schematic Diagram of Calibration Connection at System Downconverter Mode Step 1. Press【Calibrate】key to enter the calibration menu. Step 2. Press [Calibrate] menu key twice to calibrate. The first time you press the menu key you are prompted to press it again.
  • Page 126 Operation guide 4.2 Advanced operation guide External local oscillator frequency System input frequency Start frequency START Stop frequency STOP DUT output frequency or noise figure analyzer working frequency DUT input frequency 4.2.5.2 General limits The following general limits apply to various measurement modes. Fixed IF f limit depends on the measurement frequency range of noise figure analyzer.
  • Page 127 Operation guide 4.2 Advanced operation guide Error" (RF start frequency shall be more than IF start frequency:853). Note: f RF(START) IF(START) To rectify this incorrect setting condition, decrease f or increase f RF(START) b) Upper sideband limit  < f IF(STOP) If the measurement setup does not satisfy this limit, the following message appears: "Err: 861 Mode Error"...
  • Page 128 Operation guide 4.2 Advanced operation guide b) Upper sideband limit  > f IF(START) If the measurement setup does not satisfy this limit, the following message appears: "Err: 866 Mode Error" (system input frequency is out of range: 866). To rectify this incorrect setting condition, decrease f or increase f IF(START) ...

  • Page 129: Loss Compensation

    Operation guide 4.2 Advanced operation guide  > f RF(START) IF(START) If the measurement setup does not satisfy this limit, the following message appears: "Err: 853 Mode Error" (IF start frequency shall be more than RF start frequency: 853). To rectify this incorrect setting condition, decrease f or increase f RF(START) ...
  • Page 130 Operation guide 4.2 Advanced operation guide measurement accuracy. 4.2.6.2 Setting of fixed loss compensation Set the Before DUT loss compensation Step 1. Press【Loss Comp】key to enter the loss compensation menu. Step 2. Press [Before DUT] menu key and [Fixed] menu key to select the compensation mode for the Before DUT fixed loss.
  • Page 131 Operation guide 4.2 Advanced operation guide Create the loss table Create the loss table according to the following steps: Step 1. Press【Loss Comp】key to enter the loss compensation menu. Step 2. Press [Before DUT] menu key and [Table] menu key to select the table compensation mode for the Before DUT loss.
  • Page 132 Operation guide 4.2 Advanced operation guide Fig.4.54 Loss Table after Data Input Step 8. After the input of loss compensation data, If you want to save the loss table for later loading, press【File】key to enter the file operation menu. For more information about saving the ―3.3.4.2 Saving/loading compensation files, please refer to files‖.

  • Page 133: Limit Lines Function

    Operation guide 4.2 Advanced operation guide Step 2. Press [After DUT] menu key and [Fixed] or [Table] menu key to select the loss compensation mode. Step 3. Press [Temp (After] menu key, input temperature value with the numeric key, press the corresponding [K], [C] or [F] unit menu key to complete the input.
  • Page 134 Operation guide 4.2 Advanced operation guide Fig.4.55 Limit Line Table Step 4. Input the first frequency value with the numeric keypad and complete the input with the unit key. Step 5. The activated entry will automatically move to the limit line number column. Input the limit value with the numeric keypad, and press [Enter] menu key to complete the input.
  • Page 135 Operation guide 4.2 Advanced operation guide Fig.4.56 Typical Limit Line Table Fig.4.57 Limit Line Connection 4.2.7.4 Start of limit line test Start the limit line test function only after setting the limit line type and test trace and establishing the limit line table according to the above steps.
  • Page 136 Operation guide 4.2 Advanced operation guide Fig.4.58 Limit Line Failure indicator 4.2.7.5 Limit line display Select the limit line display only after setting the limit line type and test trace and establishing the limit line according to the above steps. NOTE Limit line may only be displayed in the graphic display format.

  • Page 137: Key Grouping And Menu Description

    5 Key Grouping and Menu Description 5.1 Measurement Key Group 5 Key Grouping and Menu Description This chapter describes the keys on the front panel of 3986 noise figure analyzer and the corresponding menu keys. All keys are described according to various groups, while the corresponding menu keys are described.
  • Page 138 5 Key Grouping and Menu Description 5.1 Measurement Key Group setting information. [Start Freq] The key is used to set the start frequency of sweep measurement, and for the graphic format, the trace starts from the left side of square. After the setting of start frequency, the value is displayed in the display area of measurement setting information.

  • Page 139: Calibrate】Key

    5 Key Grouping and Menu Description 5.1 Measurement Key Group [Freq List] Press the key to enter the editing interface of Freq List, and create or edit the Freq List. Input the frequency points to be measured in the Freq List. The Freq List is limited as 401 entries. The total number is displayed in the display area of measurement setting information, and frequencies are automatically stored from low to high.
  • Page 140 5 Key Grouping and Menu Description 5.1 Measurement Key Group Calibrate Steps: First press【Calibrate】key to enter the Calibrate Menu, and then press the [Calibrate] menu key twice to conduct the calibration. When [Calibrate] key is pressed for the first time, it is prompted to press again, with the prompt information as shown in Fig.5.4.

  • Page 141: Enr】Key

    5 Key Grouping and Menu Description 5.1 Measurement Key Group 5.1.3【ENR】Key SNS Setup TCold ENR Mode Preference *Default Table Spot Normal 296.50K Common Table Auto Load ENR User TCold 296.50K SNS TCold ENR Table ENR Table User TCold From SNS Spot Table 15.200dB TCold...
  • Page 142 5 Key Grouping and Menu Description 5.1 Measurement Key Group Spot SNS Setup TCold ENR Mode Spot Mode Preference *Default Table Spot Thot Normal 296.50K Common Table Spot ENR Auto Load ENR User TCold 15.200dB 296.50K Spot THot SNS TCold ENR Table 9892.80 User TCold...
  • Page 143 5 Key Grouping and Menu Description 5.1 Measurement Key Group [Row Up] Select a specific entry in the table with this key by pressing the menu key to move upwards by one entry. [Row Down] Select a specific entry in the table with this key by pressing the menu key to move downwards by one entry.

  • Page 144: Avg】Key

    5 Key Grouping and Menu Description 5.1 Measurement Key Group sweep. The smart noise source function detects the temperature with the built-in temperature sensor, and the noise figure analyzer can load the value and use the cold temperature value for the temperature correction of noise figure calculation to improve the accuracy of noise figure measurement.

  • Page 145: Mode Setup】Key

    5 Key Grouping and Menu Description 5.1 Measurement Key Group Average Average Fig. 5.6 Average Menu 5.1.5【Mode Setup】Key Press this key to enter DUT Setup, Ext LO Config, Uncertainty Calculator and Extend Setup as shown in Fig.5.7.
  • Page 146 5 Key Grouping and Menu Description 5.1 Measurement Key Group Mode Setup Ext LO Config External LO DUT Setup GPIB Addr Amplifier External LO IP Addr DownConv 172.141.64.203 Settling Time Ext LO Config UpConv 100.0000ms Uncertainty Multiplier NS Model Calculator Divider Extend Setup Freq Offset...
  • Page 147 5 Key Grouping and Menu Description 5.1 Measurement Key Group [Upconv] Press this key to select the upconverter as the type of DUT. [Ext LO Config] [External LO GPIB Addr] This key is used to set the external local oscillator GPIB address. The default address is 19. [External LO IP Addr] This key is used to set the external local oscillator IP address.

  • Page 148: Bw】Key

    5 Key Grouping and Menu Description 5.2 Control Key Group 5.1.6【BW】Key Press the key to enter the bandwidth menu as shown in Fig.5.8. To manually set the bandwidth, first press the [BW] key to set [BW] to the "manual" state; the noise figure analysis provides six bandwidths, such as 4MHz, 2MHz, 1MHz, 400kHz, 200kHz and 100kHz, and user may press [▲] and [▼] arrow keys or rotate the knob to select the bandwidth, and may also input the bandwidth with numeric keypad.

  • Page 149: Loss Comp】Key

    5 Key Grouping and Menu Description 5.2 Control Key Group 5.2.1【Loss Comp】Key Press the key to enter the loss compensation menu as shown in Fig.5.10. After the calibration, the additional loss will be added before and/or after the DUT due to the additional cable connection, and loss compensation function shall be enabled.
  • Page 150 5 Key Grouping and Menu Description 5.2 Control Key Group Loss Comp Loss Comp Loss Table After DUT Before DUT Before DUT Before Table Row Up Fixed (Before) Fixed (Before) After Table Row Down 0.000dB 0.000dB Temp (Before) Temp (Before) Page Up 290.00K 290.00K...

  • Page 151: Mode】Key

    5 Key Grouping and Menu Description 5.2 Control Key Group loss table where the different frequency points correspond to losses. [[Fixed (After)] The menu key is valid only when [After DUT] compensation type is set as "Fixed". Input the compensation value with numeric keypad, and press the corresponding [dB] or [Linear] unit key to complete input.
  • Page 152 5 Key Grouping and Menu Description 5.2 Control Key Group 5.2.3【Limit Lines】Key Press the key to enter the Setup Menu of limit line as shown in Fig.5.11. Limit line function is used to mark the boundaries of trace. There are four independent limit lines which are numbered from 1 to 4 and may be used for the test of trace 1 and trace 2 which may be set as the upper limit or lower limit.
  • Page 153 5 Key Grouping and Menu Description 5.2 Control Key Group [Display] The menu key becomes the activated menu key after the limit line data is input, and it is used to set whether to display the activated limit line in graphic format. To display the limit line, set [Display] to "On" state.
  • Page 154 5 Key Grouping and Menu Description 5.2 Control Key Group 5.2.4【Sweep】Key The menu key is used to set the restart, sweep mode and manual measurement of the noise figure analyzer as shown in Fig. 5.12. Sweep Att Setup Noise Source Manual Meas RF Att Noise Source...

  • Page 155: Corr】Key

    5 Key Grouping and Menu Description 5.2 Control Key Group During the measurement process, if [Restart] menu key is pressed, the noise figure analyzer will terminate the current measurement and start a new measurement. The menu key has the same function as the【Restart】key.
  • Page 156 5 Key Grouping and Menu Description 5.2 Control Key Group Corr/Att NF Corr RF Min Cal Att RF Max Cal Att 20dB μW Min Cal Att μW Max Cal Att Fig.5.13 Corr/Att Menu [NF Corr] The key is used to set whether to correct the second stage noise during the measurement. When the [NF Corr] is set to "On", the noise figure analyzer can obtain the accurate gain and noise figure of DUT.

  • Page 157: Restart】Key

    5 Key Grouping and Menu Description 5.3 Display Key Group process, μW frequency ranges from 4GHz to 18/26.5/40/50GHz. μW attenuation can select the proper attenuation value from 0dB to 15dB at the step of 5dB. The maximum attenuation value is 0dB by default.

  • Page 158: Result】Key

    5 Key Grouping and Menu Description 5.3 Display Key Group [Display Format] The key is used to select the display format of measurement data. [Graph] Press the key to display the measurement value in the graphic format, which is the default setting.

  • Page 159: Scale】Key

    5 Key Grouping and Menu Description 5.3 Display Key Group be noise figure. [Noise Figure] Press the key to select the noise figure as the display result of measurement value. [Gain] Press the key to select the gain as the display result of measurement value. [Y-Factor] Press the key to select Y-Factor as the display result of measurement value.
  • Page 160 5 Key Grouping and Menu Description 5.3 Display Key Group coordinate auto scale, scale/div, ref value, upper/lower limit setup only applies to graphic format.but the unit setup is available for all display formats. The scale menu to be displayed depends on the currently activated measurement result. The setup of upper/lower limit and reference value only affects the display position of data and will not affect the measurement value.
  • Page 161 5 Key Grouping and Menu Description 5.3 Display Key Group The key is used to set the data display unit, and the corresponding optional units of measurement results are as shown in Table 5.1. Table 5.1 Comparison Table of Measurement Results and Units Measurement Results Unis Noise figure...
  • Page 162 5 Key Grouping and Menu Description 5.3 Display Key Group 5.3.4【Marker】Key Marker Sel Peak Search Marker Marker Select Marker Select Marker Sel *Marker 1 Marker1 Marker1 Search Type Marker State Marker2 Search Type Continuous Marker Type Marker3 Delta Normal Marker4 Find Discrete Mkr All Off...
  • Page 163 5 Key Grouping and Menu Description 5.3 Display Key Group are up to four pairs of markers which may be distributed on different traces and can be displayed simultaneously. Only one pair of markers can be controlled at a time. The markers under control are called as the activated ones.

  • Page 164: System Key Group

    5 Key Grouping and Menu Description 5.4 System Key Group 5.4 System Key Group  【Preset】Key… ………………………… ……………………………………………152  【System/Local】Key… ………………… ………………………………………………152  【File】Key… ………… ……………………………………………………………157  【Save】Key… … ……………………………………………………………………157  【Print】 Key… … ………………………………………………………………………158  【Help】Key…… ………… …………………………………………………………158 This section describes in detail the system key group and its corresponding menu item functions, results and other information.
  • Page 165 5 Key Grouping and Menu Description 5.4 System Key Group PowerOn/Prest System Error List Config Info Preset Print Error List Page Up User Config Info Fact PowerOn Save Page Down /Preset UserPreset Save Align Align Clear List PowerOn Config Info Save ENR Self-Test Self-Test...
  • Page 166 5 Key Grouping and Menu Description 5.4 System Key Group Interface Self-Test Config Interface Config Self-Test Self-Test GPIB Address Start Load Record IP Address Pause Print 172.141.64.203 LO Step Internet Config... 100 MHz Printer Circle Times Normal Reverse 1 Times Save Record Freq Ref Display Struct...
  • Page 167 5 Key Grouping and Menu Description 5.4 System Key Group Press the menu key to enter the auto adjustment and alignment menu of internal hardwares of noise figure analyzer. Major menus include the auto adjustment of preselector and local oscillator, reference adjustment, frequency diagnosis, factory debugging, etc.
  • Page 168 5 Key Grouping and Menu Description 5.4 System Key Group [Update License] It is used to upgrade the hardware/software by updating the license. [Self Test] It is used to control the analyzer to perform the self-test. The soft menu includes [Start], [Pause], [LO Step], [Circle Times], [Save Record], [Display Struct], [Load Record], [Print] etc.

  • Page 169: File】Key

    5 Key Grouping and Menu Description 5.4 System Key Group 5.4.3【File】Key The key is used to enter the file-related operation menu as shown in Fig.5.21, and to save or load the file, save the test data, and exit the file-related operation of noise figure analyzer. File Save...

  • Page 170: Print】Key

    5 Key Grouping and Menu Description 5.4 System Key Group 5.4.5【Print】Key Press【Print】key to control the noise figure analyzer to print a screenshot. For details, please refer to ―3.3.4 Perform file operations‖ in this manual. 5.4.6【Help】Key When【Help】key is pressed, the noise figure analyzer will display the content of the relative chapter in electronic manual corresponding to analyzer menu.

  • Page 171: Remote Control

    For details, please refer to the user manual of the installed VISA library. 6.1.1.1 LAN interface The 3986 series noise figure analyzer can be accessed to the 10 Mbps/100 Mbps/1,000 Mbps Ethernet through a RJ45 communication cable (shielded or unshielded CAT 5 twisted pair) for remote control via...
  • Page 172 Remote Control 6.1 Remote control basis the LAN control computer. The noise figure analyzer has already been installed with an interface adapter and TCP/IP network protocol and configured with network service based on TCP protocol to realize the remote control in LAN. The network interface adapter installed on the 3986 noise figure analyzer has three operating modes: 10 Mbps Ethernet (IEEE802.3);...

  • Page 173: Message

    Remote Control 6.1 Remote control basis and Winsock are commonly used. The socket in the noise figure analyzer is Berkeley socket and Winsock compatible through the application program interface (API). In addition, other standard sockets are also compatible through the API.

  • Page 174: Scpi

    Remote Control 6.1 Remote control basis Query command: query and return data, for example, identify instrument or query parameter values. The query command is always ended with a question mark. Based on the definition in the standard: Common command: with functions and syntax defined in IEEE488.2, applicable to all types of instrument (if implemented) for the management of standard status register, reset, self-test, etc.
  • Page 175 Remote Control 6.1 Remote control basis 6.1.3.2 SCPI description General terms For the purpose of this section, the following terms should apply. It is necessary to know about the exact definitions of these terms for a better understanding of the content in various chapters. Controller A controller is any computer used to communicate with an SCPI equipment.
  • Page 176 Remote Control 6.1 Remote control basis according to the functional block inside the instrument. For example, the power subsystem (:POWer) contains the power-related command while the status subsystem (:STATus) contains the command for the status control register. Instrument-specific command syntax Table 6.2 Special Characters in Command Syntax Symbol...
  • Page 177 Remote Control 6.1 Remote control basis as they are not the portion of the command path. A semicolon separates 2 adjacent commands without affecting the current :FREQ 2.5GHZ; :POW 10DBM path. White space characters, such as <space> or <tab>, are :FREQ uency or :POWer :LEVel6.2 is generally ignored not allowed.
  • Page 178 Remote Control 6.1 Remote control basis Indefinite Length Block Hexadecimal Non-decimal numeric Octal Binary SCPI defines the rule based on which different data formats are used in remote control messages and response messages to accommodate the principle of ―flexible listening‖ and ―precise talking‖. For more information, please refer to IEEE488.2.
  • Page 179 Remote Control 6.1 Remote control basis 200 MHz The MHz can be used as an exponent (E006) -100 mV -100 millivolts 10DEG 10 degrees MAXimum Maximum valid setting MINimum minimum valid setting Increase a step DOWN Decrease a step Discrete parameter When there are a finite number of parameter values to be set, discrete parameters are used for identification.
  • Page 180 Remote Control 6.1 Remote control basis g) Integer response data The integer response data are a decimal expression of an integer with the sign bit. When the status register is queried, the integer response data will be mostly returned. Examples of integer response data: Sign digit optional +100 Leading + allowed...

  • Page 181: Command Sequence And Synchronization

    Remote Control 6.1 Remote control basis :POW #H000A In a non-decimal format, the measurement unit such as DBM or mV isn‘t used together with the value. Command line structure A command line may contain multiple SCPIs. To indicate the end of the current command line, the following methods can be used: ...

  • Page 182: Status Reporting System

    Remote Control 6.1 Remote control basis NOTE Set command and query commands are sent separately: General rule: The setting and query commands should be sent in different program control messages so as to ensure a correct returned value for the query command. 6.1.4.1 Preventing overlapping execution of the command In order to prevent the overlapped execution of commands, multiple threads or commands: *OPC, *OPC? or *WAI can be used.
  • Page 183 Remote Control 6.1 Remote control basis 6.1.5.1 Structure of the status register The register classification is described as follows: STB, SRE Status Byte (STB) register and its associated mask register, Service Request Enable (SRE) register, constitute the top-level register of the status reporting system. The STB saves the general working status of the instrument by collecting low-level register information.

  • Page 184: Programming Considerations

    Remote Control 6.1 Remote control basis Fig 6.1 Hierarchy Diagram of Status Registers 6.1.5.2 Application of status reporting system The status reporting system is used to monitor the status of one or more instruments in the test system. To correctly realize the function of the status reporting system, the controller in the test system must receive and evaluate the information of all instruments.

  • Page 185: Remote Interface And Its Configuration

    Remote Control 6.2 Remote interface and its configuration Command sequence In general, the setting and query commands should be sent separately; otherwise the returned value of the query command will change according to the current instrument operation sequence. Failure response The service request can only be initiated by the instrument itself.

  • Page 186: Gpib

    Remote Control 6.3 Basic programming method of the VISA interface Attention Ensure that the noise figure analyzer is physically connected properly by 10Base-T LAN or 100Base-T LAN cable Because the noise figure analyzer only supports the construction of a single LAN control system and the setting of static IP addresses, and it does not support DHCP and the access to the host through the DNS and domain name servers, the users do not need to modify the subnet mask, which is fixedly set to 255.255.255.0 in the instrument.

  • Page 187: Initialization Of Instrument

    Remote Control 6.3 Basic programming method of the VISA interface ViStatus status; status = viOpenDefaultRM(&defaultRM); status = viOpen(defaultRM, analyzerString, VI_NULL, VI_NULL, &analyzer); 6.3.3 Initialization of instrument /*************************************************************************/ The following example shows how to initialize the instrument default status and clear status registers. /*************************************************************************/ void InitDevice() ViStatus status;...

  • Page 188: Read Frequency Marker

    Remote Control 6.3 Basic programming method of the VISA interface status = viWrite(analyzer, ":FREQ:CENT?", 10, &retCnt); status = viRead(analyzer, rd_Buf_CW, 20, &retCnt); //Print debugging information sprint("Cw is %s", rd_Buf_CW); 6.3.6 Read Frequency Marker /*************************************************************************/ The following example shows how to read the measured marker. /*************************************************************************/ void ReadMarker () ViStatus status;...

  • Page 189: I/O Library

    Remote Control I/O library status = viWrite(analyzer, ":INIT", 18, &retCnt); status = viWrite(analyzer, "*WAI", 18, &retCnt); //Method 2 of waiting for sweep completion: use *OPC？ status = viWrite(analyzer, ":INIT", 20, &retCnt); status = viWrite(analyzer, "*OPC?", 18, &retCnt); status = viRead(analyzer, OpcOk, 2, &retCnt); //wait for *OPC to return ―1‖ //Method 3 of waiting for sweep completion: use *OPC //To use the GPIB service requeset, set "Disable Auto Serial Poll‖...

  • Page 190: Installation And Configuration Of I/O Library

    Remote Control I/O library Application Interactive developer Program developer interface interface Instrument drive program (functional body) Subprogram interface I/O interface (VISA) Figure 6.2 Instrument Driver Structure Model The detailed description is given as follows: Functional body. It is the main functional part of the instrument driver and can be understood as the framework program of the instrument driver.
  • Page 191 Remote Control I/O library in different development environments. The IVI driver of the noise figure analyzer uses Nimbus Driver Studio to produce IVI-COM and IVI-C drivers as well as program installation package. For specific installation and configuration, please refer to documents accompanied with the control card and I/O Library of your choice.
  • Page 192 Remote Control I/O library...

  • Page 193: Fault Diagnosis And Repair

    This chapter will show you how to find out problems and accept after-sales service. If you encounter any problems while using the 3986 series noise figure analyzer or need to purchase additional or optional parts for the device, we will provide complete after-sales service.

  • Page 194: Fault Diagnosis And Troubleshooting

    Fault Diagnosis and Repair 7.2 Fault diagnosis and troubleshooting which is then filtered through a 5.225GHz band-pass filter and input into the second inverter in the low-band frequency conversion. This results in a second intermediate frequency difference of 425MHz with the frequency of the second oscillator, 4.8GHz. The microwave section provides a four-band product at 4GHz～18/26.5/40/50GHz.

  • Page 195: 1Basic Fault Diagnosis Process

    The common faults and troubleshooting methods are listed by function. 7.2.2.1 Problems that arise during system start-up If the 3986 series noise figure analyzer malfunctions during start-up, there may be a problem with the power source, external processing hardware, or device configuration. This section will go through the power-on procedure of the 3986 series noise figure analyzer and analyze the possible causes of problems during the start-up process.
  • Page 196 Then confirm that the voltage and frequency of the power source comply with the required working ―3.1.1.3 parameters of the 3986 series noise figure analyzer. Detailed requirements can be found in Power on/off‖. If the power supply parameters meet the requirements , the problem may be caused by the instrument power failure.
  • Page 197 Fault Diagnosis and Repair 7.2 Fault diagnosis and troubleshooting Step 1. Check whether a standard keyboard has been connected and whether the BIOS test was terminated. If not, please continue to the next step. Step 2. Power off and then connect a PS/2 interface standard keyboard to the instrument. Power on, long press the 【F2】...

  • Page 198: Repair Method

    Packaging and mailing…………………… … ………………………………………………………187 7.3.1Contact us If 3986 series noise figure analyzer has any fault, firstly observe and save the error information, and then analyze possible causes and and eliminate and solve the problems according to methods described in ―7.2 Fault diagnosis and...

  • Page 199: 2Packaging And Delivery

    Contact information: Tel: +86-0532-86896691 E-mail: sales@ceyear.com Web: www.ceyear.com Address: No.98, Xiangjiang Road, Qingdao City, China Postal code: 266555 7.3.2Packaging and delivery If you encounter a problem that is difficult to solve when using the noise figure analyzer, you can reach us via telephone or fax.
  • Page 200 Fault Diagnosis and Repair 7.3 Repair Method...

  • Page 201: Specifications And Test Methods

    8. Specifications and Test Methods 8.1 Statement 8. Specifications and Test Methods This chapter introduces the specifications and main test methods of 3986 series noise figure analyzers.  Statement…………………… …………… ………………………………………………………………189  ………………………………………………………………189 Product Features………………………  Specifications………………………… … … ………………………………………………………...

  • Page 202: Specifications

    8. Specifications and Test Methods 8.3 Specifications testing and 2 MΩ in humid environment. When a 1,500VAC voltage is applied between the equipment power input end and the instrument enclosure, there should be no breakdown, flashover or flashing. The leakage current between the instrument enclosure and the ground should not exceed 3.5mA during equipment operation.

  • Page 203: Frequency Range

    8. Specifications and Test Methods 8.3 Specifications 8.3.1 Frequency Range Model Frequency range 3986A 10MHz～4GHz 3986D 10MHz～18GHz 3986E 10MHz～26.5GHz 3986F 10MHz～40GHz 3986H 10MHz～50GHz 8.3.2 Frequency Reference Accuracy ±＜0.2pmm 8.3.3 Frequency Tuning Accuracy 4MHz bandwidth ±＜ (frequency reference error+100kHz) 10MHz≤f≤4GHz ±＜ (frequency reference error+400kHz) 4GHz＜f≤50GHz Less than 4MHz bandwidth ±＜...

  • Page 204: Noise Source Drive Voltage

    8. Specifications and Test Methods 8.4 Supplementary Information 8.3.9 Noise Source Drive Voltage ＜1.0V (noise source OFF) +28.0V±0.1V (noise source ON) 8.4 Supplementary Information  Measurement Bandwidth…………… ………… ……… …… ………………………………192  ……… …… … ………… …………………………………192 Sweep Points…………  …………………………...

  • Page 205: Performance Characteristics Test

    4GHz, start frequency of 4GHz and stop frequency of 18/26.5/40/50GHz are set on the front panel based on the product frequency range; if the instrument sweep status and the display are normal, write PASS in the corresponding item of ―Performance Test Record Table of 3986 Series Noise Figure Analyzers‖.
  • Page 206 8.5.1.3 Frequency Tuning Accuracy Test Item description The frequency tuning accuracy indexes of 3986 series noise figure analyzers are related to the shape of IF filter, stability of time base, and stability of the analyzer receiving channel. The center frequency of 3986 series noise figure analyzers is defined in the half power point of power measurement trace.
  • Page 207 Step 15. Repeat Step 11) to Step 14), change the output frequency of signal generator and the center frequency of 3986 noise figure analyzer according to the frequency points given in Table B.2 of ―Performance Test Auxiliary Table of 3986 Series Noise Figure Analyzers‖ until all the measuring frequency points are tested.
  • Page 208 Table B.2 of ―Performance Test Auxiliary Table of 3986 Series Noise Figure Analyzers‖. The difference between the measured center frequency and the set center frequency is frequency error which shall meet the specifications.
  • Page 209 PHot at 0dB attenuation. Record it as actual power variation in the appropriate location of Table B.3 and B.4 of ―Performance Test Auxiliary Table of 3986 Series Noise Figure Analyzers‖. The actual power variation of less than 1dB is calculated by interpolation.
  • Page 210 Note the measured gain (G2) of noise figure analyzer at each step and record in Table B.5 of ―Performance Test Auxiliary Table of 3986 Series Noise Figure Analyzers‖. Step 10. Take the step attenuation as standard gain (G1). The difference between G1 and G2 is the gain measurement uncertainty.
  • Page 211 Figure 8.7 Test Block Diagram of Input VSWR Step 7. Set the frequency range of 3986 noise figure analyzer according to the frequency range division requirements in Table A.1 of "Performance Test Auxiliary Table of 3986 Series Noise Figure Analyzers".
  • Page 212 8.5 Performance Characteristics Test the corresponding frequency range, Record it in the corresponding item of Table A.1 of "Performance Test Record Table of 3986 Series Noise Figure Analyzers" until all frequency bands are tested. The measurement result shall meet the requirements of port VSWR.
  • Page 213 Step 9. Repeat Step 8 for a total of 100 times and record the measurement results in Table B.6 of ―Performance Test Auxiliary Table of 3986 Series Noise Figure Analyzers‖. Step 10. Calculate the linear value of standard deviation using the following formula: ...
  • Page 214 Source OFF]. Step 6. Measure the noise source drive output voltage with digital voltmeter and record it in the corresponding item of Table A.1 of ―Performance Test Record Table of 3986 Series Noise Figure Analyzers‖. Step 7. Press [Return] key to restore the instrument sweep status.

  • Page 215: Performance Test Record Table Of 3986 Series Noise Figure Analyzers

    8. Specifications and Test Methods 8.5 Performance Characteristics Test 8.5.2 Performance Test Record Table of 3986 Series Noise Figure Analyzers Performance Test Record of 3986 Series Noise Figure Analyzers Instrument No.: Tested by: Test conditions: Test date: Table A.1 Performance Test Record of 3986A/D/E/F/H Noise Figure Analyzers...

  • Page 216: Performance Test Auxiliary Table Of 3986 Series Noise Figure Analyzers

    8. Specifications and Test Methods 8.5 Performance Characteristics Test 8.5.3 Performance Test Auxiliary Table of 3986 Series Noise Figure Analyzers Table B.1 Test Record of Frequency Reference Accuracy Measurement Specification Calculation Method Test Result (Hz) Result (Hz) Reading 1 Direct read Frequency reference Reading 1–10 MHz...
  • Page 217 8. Specifications and Test Methods 8.5 Performance Characteristics Test Table B.3 Test Record of 30dB Noise Figure Measurement Range and Measurement Uncertainty Excess noise ratio: 12dB～17dB, measurement range: 0dB～30dB Theoretical Actual Theoretical Measured PHot Measurement Attenuation Power Power Noise Noise Measurement Uncertainty (dB)
  • Page 218 8. Specifications and Test Methods 8.5 Performance Characteristics Test Table B.4 Test Record of 35dB Noise Figure Measurement Range and Measurement Uncertainty Excess noise ratio: 20dB～22dB, measurement range: 0dB～35dB Theoretical Actual Theoretical Measured PHot Measurement Attenuation Power Power Noise Noise Measurement Uncertainty (dB)
  • Page 219 8. Specifications and Test Methods 8.5 Performance Characteristics Test Table B.5 Test Record of Gain Measurement Range and Measurement Uncertainty Measured Gain Measurement Increased Measurement Increased Theoretical Theoretical of Noise Figure Uncertainty Attenuation Measurement uncertainty Attenuation Gain Gain Analyzer G2 G1-G2 Gain G2 G1-G2...
  • Page 220 8. Specifications and Test Methods 8.5 Performance Characteristics Test Table B.6 Jitter (Uneven) Test Record Y Factor Measurement (Lin) 1-10 11-20 21-30 31-40 41-50 51-60 61-70 71-80 81-90 91-100 Frequency Point (MHz) Standard Deviation (dB) Performance Index ＜0.17dB 3500...

  • Page 221: Appendixes

    Appendixes Appendix A Terminology Appendixes  Appendix A Terminology ………………………… ………………………………………… 209  Appendix B SCPI CommandLookup Table ……………………… ……………………………………214  Appendix C Quick Search Table of Error Message…………………………………………………224 Appendix A Terminology Noise Noise is a natural phenomenon and a form of movement of matter. Broadly speaking, noise is an unexpected disturbance that interferes or disturbs useful signal, disturbing or distorting the signal transmitted via network.

  • Page 222: Equivalent Input Noise Temperature

    Appendixes Appendix A Terminology Equivalent input noise temperature Equivalent input noise temperature is a common parameter to describe the internal network noise performance. The internal network noise can be equivalent to the network input port and donated by T the equivalent input noise temperature. Such an actual network can be equivalent to a cascade of noise source with noise temperature of T and an ideal noise-free network.

  • Page 223: Noise Figure Analyzer

    Appendixes Appendix A Terminology usually expressed in dB.   10 ( （9） Where, ──The equivalent output hot noise temperature when the noise source is ON; The equivalent output cold noise temperature when the noise source is OFF; c── Reference noise temperature of 290K. o──...

  • Page 224: Preselector

    Appendixes Appendix A Terminology Preselector It is a filter between low-noise pre-amplifier output and mixer input of noise figure analyzer. Due to the influence of YIG device operating frequency, a low-pass filter with fixed cut-off frequency is generally used in the low frequency band of noise figure analyzer. To reduce the requirement for filter skirt selectivity, the first-stage frequency conversion mode of low frequency band is up converter with the first IF much higher than the maximum of the corresponding frequency band;...

  • Page 225: Frequency Range

    Appendixes Appendix A Terminology Frequency range It is the range between minimum and maximum frequencies that can be measured by the noise figure analyzer when the specified performance is met. For the noise figure analyzer, the frequency range and the appropriate frequency band division shall be specified in the product specification. RF attenuation A step attenuation at RF input port of the noise figure analyzer.

  • Page 226: Appendix B Scpi Command Lookup Table

    *TRG Execute the trigger command Wait for execution of all blocked instrument jobs before executing *WAI subsequent instructions. Attached Table 2 Quick Search Table of SCPIs of 3986 Series Noise Figure Analyzer Index Command Function :CALCulate:LLINe Set/Query the limit line number...
  • Page 227 Appendixes Appendix B SCPI Command Lookup Table :CALCulate:MARKer1|2|3|4:MINimum? Query the minimum of selected marker of current trace and the corresponding frequency :CALCulate:MARKer1|2|3|4:MODE Set/Query type selected marker :CALCulate:MARKer1|2|3|4:PTPeak? Query the peak to peak of selected marker of current trace corresponding frequency :CALCulate:MARKer1|2|3|4:SEARch:CONTinuous[:STATe] Set/Query the ON/OFF state of continuous search of selected...
  • Page 228 Appendixes Appendix B SCPI Command Lookup Table annotation display Set/Query the ON/OFF state of :DISPlay:DATA:CORRections correction Set/Query the type of current :DISPlay:DATA:TRACe[1]|2 trace :DISPlay:DATA:UNITs Set/Query the result display unit Set/Query measurement :DISPlay:FORMat display format Set/Query the ON/OFF state of :DISPlay:GRATicule graticule display :DISPlay:PRESet Reset...
  • Page 229 Appendixes Appendix B SCPI Command Lookup Table frequency state corrected Read the cold power of dot :FETCH:SCALar:CORRected:PCOLd? frequency state corrected Query the hot power of dot :FETCH:SCALar:CORRected:PHOT? frequency state corrected Query equivalent :FETCH:SCALar:CORRected:TEFFective? temperature of dot frequency state corrected Query Y factor of dot frequency :FETCH:SCALar:CORRected:YFACtor? state corrected Query the gain of dot frequency...
  • Page 230 Appendixes Appendix B SCPI Command Lookup Table microwave Set/Query minimum :INPut:ATTenuation:MWAVe:MINimum attenuation calibrated microwave Load measurement :MMEMory:LOAD:ENR calibration excess noise table from a file Load the frequency list from the :MMEMory:LOAD:FREQuency specified file Load the limit line from the :MMEMory:LOAD:LIMit specified file Load selected...
  • Page 231 Appendixes Appendix B SCPI Command Lookup Table external LO Set/Query measurement :SENSe:CONFigure:MODE:DOWNconv:FREQuency:CONT frequency input type of down converter Set/Query the fixed IF in down :SENSe:CONFigure:MODE:DOWNconv:IF:FREQuency conversion mode Set/Query fixed :SENSe:CONFigure:MODE:DOWNconv:LOSCillator:FREQu frequency in down conversion ency mode Set/Query the sideband type in :SENSe:CONFigure:MODE:DOWNconv:LOSCillator:OFFSet down conversion mode :SENSe:CONFigure:MODE:DUT...
  • Page 232 Appendixes Appendix B SCPI Command Lookup Table Set/Query the ON/OFF state of :SENSe:CORRection:ENR:AUTO[:STATe] auto load ENR form Query the input count of ENR :SENSe:CORRection:ENR:CALibration:TABLe:COUNt? calibration table Set/Query Data :SENSe:CORRection:ENR:CALibration:TABLe:DATA calibration table Set/Query ID of ENR calibration :SENSe:CORRection:ENR:CALibration:TABLe:ID:DATA table Set/Query the serial number of :SENSe:CORRection:ENR:CALibration:TABLe:SERial:DATA ENR calibration table Load ENR calibration table from...
  • Page 233 Appendixes Appendix B SCPI Command Lookup Table Set/Query fixed loss :SENSe:CORRection:LOSS:BEFore:VALue compensation value before DUT Set/Query the ON/OFF state in :SENSe:CORRection:LOSS:BEFore[:STATe] loss compensation mode before :SENSe:CORRection:SPOT:MODE Set/Query the spot ENR type Set/Query the ON/OFF state of :SENSe:CORRection:TCOLd:SNS[:STATe] automatically reading cold temperature from SNS Set the user cold temperature :SENSe:CORRection:TCOLd:USER:SET...
  • Page 234 Appendixes Appendix B SCPI Command Lookup Table Set/Query manual :SENSe:MANual:RF:FIXed measurement fixed attenuation Set/Query manual :SENSe:MANual:RF:MODE measurement mode attenuation Set/Query the manual mode or :SENSe:NFIGure:BANDwidth:AUTO auto mode of span. :SENSe:RENEw:SWEep Renew sweep Set/Query the type of noise :SENSe:SOURce:NOISe:STYLe source :SENSe:SWEep:POINts Set/Query sweep points :SENSe:SYSTem:COMMunicate:GPIB:EXTLoscillator:ADDR Set/Query GPIB address of...
  • Page 235 Appendixes Appendix B SCPI Command Lookup Table Query the amplitude difference between frequency :TRACe[:DATA]:UNCorrected:DELTa? frequency 2 in the specified uncorrected trace Query the difference between maximum minimum amplitude specified :TRACe[:DATA]:UNCorrected:PTPeak? uncorrected trace frequency difference that produces the difference...

  • Page 236: Appendix C Quick Search Table Of Error Messages

    Appendixes Appendix C Quick Search Table of Error Messages Appendix C Quick Search Table of Error Messages Schedule 3 Local Error Message List Error Code Error Key Field Description Instrument keyboard initialization failed, please check USBINITERR hardware and driver LAN port initialization failed, please check hardware and LANINIT ERR driver Functional hardware initialization failed, please check...
  • Page 237 Appendixes Appendix C Quick Search Table of Error Messages OVERSTEP The number of error voltage zero adjustments exceeds 15 CORS LOW The coarse DAC value is out of range 0 to 255, less than 0 The coarse DAC value is out of range 0 to 255, greater than CORS UPR In coarse tuning process, coarse DAC value of less than 0 is CORS LOW...
  • Page 238 Appendixes Appendix C Quick Search Table of Error Messages 4M Error Error in 4MHz bandwidth conversion error calibration 2.5M Err Error in 2.5MHz bandwidth conversion error calibration 2M Error Error in 2MHz bandwidth conversion error calibration 1.6M Err Error in 1.6MHz bandwidth conversion error calibration 1M Error Error in 1MHz bandwidth conversion error calibration 800k Err...
  • Page 239 Appendixes Appendix C Quick Search Table of Error Messages NB WRKP Failed to set the working parameters of narrowband device FIR FILE Failed to call FIR file FPGA FILE Failed to open FPGA file of narrowband acquisition device Failed to create narrowband acquisition device driver NB EVT synchronization event NBOVERTIME...
  • Page 240 Appendixes Appendix C Quick Search Table of Error Messages FIR TMOUT Timeout error in continuous sweep FIR RDERR Data read error in continuous sweep, read points mismatch Frequency is beyond ENR and ENR will be obtained by ENR Data heterodyne ENR Data ENR table is empty, no ENR data is entered CAL Invalid...
  • Page 241 Appendixes Appendix C Quick Search Table of Error Messages Mode setting error: (LO-RF start frequency) must be greater Mode Error than or equal to the minimum input frequency of the instrument Mode setting error: the IF start frequency must be less than Mode Error the fixed LO frequency Mode setting error: the IF stop frequency must be greater...

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