Anritsu MT8860C Operation Manual
Anritsu MT8860C Operation Manual

Anritsu MT8860C Operation Manual

Wlan test set
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Summary of Contents for Anritsu MT8860C

  • Page 1 T h e t e s t & me a s u r e me n t e q u i p me n t y o u n e e d a t t h e p r i c e y o u w a n t . A l l t e s t I n s t r u me n t s , I n c .
  • Page 2 Operation Manual MT8860C WLAN Test Set...
  • Page 3 Anritsu...
  • Page 4 Operation Manual MT8860C WLAN Test Set Anritsu Company Part Number: 13000-00258 490 Jarvis Drive Revision: M Morgan Hill, CA 95037-2809 Published: August 2013 Copyright 2013 Anritsu Company http://www.anritsu.com...
  • Page 5 In addition, this warranty is valid only for the original equipment purchaser. It is not transferable if the equipment is resold. Anritsu Corporation shall assume no liability for injury or financial loss of the customer due to the use of or a failure to be able to use this equipment.
  • Page 6 This EULA allows you to install one copy of this Software on one piece of Equipment. 2. Disclaimers To the extent not prohibited by law, in no event shall Anritsu be liable for personal injury, or any incidental, special, indirect or consequential damages whatsoever,...
  • Page 7 6. Reparations If Anritsu suffers any loss, financial or otherwise, due to your violation of the terms of this EULA, Anritsu shall have the right to seek proportional damages from you.
  • Page 8 This product and its manuals may require an Export License or approval by the government of the product country of origin for re-export from your country. Before you export this product or any of its manuals, please contact Anritsu Company to confirm whether or not these items are export-controlled.
  • Page 9 VxWorks Runtime WindML Target License License 2000-1189 2000-1372 NI Device License WindRiver USB Runtime License 3-2000-1486 2000-1421...
  • Page 12 Some or all of the following five symbols may or may not be used on all Anritsu equipment. In addition, there may be other labels attached to products that are not shown in the diagrams in this manual.
  • Page 13 Avoid touching the test port center conductors unless you are properly grounded and have eliminated the possibility of static discharge. Repair of damage that is found to be caused by electrostatic discharge is not covered under warranty. Safety-2 PN: 13000-00258 Rev. M MT8860C (Operation Manual)
  • Page 14: Table Of Contents

    MT8860C Features ........
  • Page 15 Ad-Hoc (MT8860C creates) / Infrastructure (AP) ....6-3 Ad-Hoc (MT8860C joins) / Infrastructure (STA)....6-9 Chapter 7—802.11b/g/a Transmitter Testing in Network Mode...
  • Page 16 9-12 Numeric Results ..........9-34 MT8860C Operation Manual PN: 13000-00258 Rev.
  • Page 17 11-11 EVM vs Symbol..........11-34 Contents-4 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 18 15-14 Options - Enabling and Disabling ....... 15-12 MT8860C Operation Manual PN: 13000-00258 Rev.
  • Page 19 15-17 Remote Commands - Sending from LANLook ..... 15-15 15-18 Settings - Saving to the MT8860C ......15-16 15-19 Simulation Mode .
  • Page 20 Anritsu Service Centers ........
  • Page 21 Obtaining the LAN IP Address of the MT8860C ....I-26 Changing the MT8860C LAN configuration ..... . I-30 Appendix J—Using LANLook with Agilent GPIB Controllers...
  • Page 22: Chapter 1-General Information

    1. Start LANLook from the desktop shortcut or by accessing the Windows programs directory and selecting [Anritsu] > [LANLook]. 2. Establish a remote connection (GPIB or Ethernet) with the MT8860C. Refer to chapter 5 for details. 3. Select [About Anritsu LANLook] from the LANLook [Help] menu. Check the MT8860C and LANLook version numbers that display in the dialog.
  • Page 23: Notification Of Software Release

    Chapter 1 — General Information Notification of Software Release The MT8860C software is periodically updated as new features are added to meet market demands. To receive automatic notification of software releases, send a blank e-mail with the subject heading of "MT8860C Software Notification Request" to wlan.support@anritsu.com.
  • Page 24: Product Description

    This refers to data rates of 6, 9, 12, 18, 24, 36, 48, and 54 Mbps. Product Description The MT8860C is an integrated WLAN test set for testing WLAN devices operating in both the unlicensed Industrial Scientific and Medical (ISM) and 5 GHz frequency bands.
  • Page 25: Option 17

    Figure 1-2. MT8860C with MN8861A Receiver Accessory The MN8861A attaches to the “WLAN Reference” input on the front of the MT8860C. It is used to transmit a user-configured 802.11n signal through the MT8860C attenuator to the DUT. Refer to chapter 4 for full details of instrument configurations.
  • Page 26: Options And Accessories

    Bluetooth / dual band WLAN antenna and adapter 2100-2 GPIB cable, 2m B0329G Protective cover 2000-1371-R Ethernet cable 3-806-152 Cat 5E cross-over patch cable 13000-00258 MT8860C WLAN Test Set Operation Manual 13000-00259 MT8860C WLAN Test Set Remote Programming Manual MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 27: Test Methodology Overview

    MT8860C and WLAN device. Technical Overview The internal structure of the MT8860C is illustrated in the following two figures. The first figure shows the MT8860C with the front panel removed and the four detachable cards visible inside. The second figure is a representation of the interaction and structure of each card.
  • Page 28 Chapter 1 — General Information 1-2 Product Description Figure 1-4. MT8860C Internal Cards Reference Radio Card The reference radio card houses the following three components. • Attenuator: The output from the internal 802.11 reference radio passes through the 80 dB attenuator, allowing the user to set the calibrated signal levels at the test port between 0 and -100 dBm.
  • Page 29: What Is Lanlook

    LANLook or to the alternative software in use. What is LANLook? LANLook is a PC based software application used to control the MT8860C during testing and graphically display the measurement results. LANLook is supplied as standard with each MT8860C ordered and communicates with the instrument by means of an Ethernet or GPIB interface.
  • Page 30: Lanlook Features

    When ready, the test plan is executed with a single click and a detailed report of results is output automatically. CombiTest, and the plug-in for the MT8860C, can be downloaded for free from Anritsu’s website. Go to http://www.anritsu.com/en-gb/products-solutions/products/mt8860c.aspx click the [Library] tab.
  • Page 31 1-3 CombiTest Chapter 1 — General Information 1-10 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 32: Chapter 2-Preparation For Use

    Chapter 2 — Preparation for Use Operating Environment The MT8860C is designed to function within the temperature range of 5°C to 40°C with a humidity level of <75%, non-condensing. Power Requirements The MT8860C is operated from an AC line power. The MT8860C is intended as an Installation (Overvoltage) Category II, Insulation Category I device.
  • Page 33: Package Contents

    2-3 Unpacking the Product Chapter 2 — Preparation for Use Package Contents Your MT8860C is shipped with the following items. Check that all listed items are present, and contact Anritsu if they cannot be found. Table 2-1. Package Contents Item...
  • Page 34: Preparing For Storage

    Chapter 2 — Preparation for Use 2-4 Preparing for Storage Preparing for Storage 1. Clean the MT8860C prior to storage and pack it using moisture-absorbing desiccant crystals. 2. Store the unit in a temperature controlled environment maintained at between -20°C and 70°C, with a maximum humidity of <75% at 40°C, non-condensing.
  • Page 35 2-5 Preparing for Shipment Chapter 2 — Preparation for Use PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 36: Chapter 3-Lanlook Installation

    VISA compatible or has NI-488.2 support. (Refer to Appendix B in the Remote Programming Manual for details of the GPIB controller configuration.) • For Ethernet remote interface: • Typically there are four ways in which the MT8860C can be connected to a LAN. Refer to Appendix I for details. Installation Procedure If using a GPIB remote interface, the GPIB card and drivers must be installed on the PC before installing LANLook.
  • Page 37 4. A dialog displays to specify the folder for installation. By default, LANLook is installed to C:\Program Files\LANLook. Click [Next>] to install to the specified directory, or click [Browse…] to specify a different location for the installation. Figure 3-2. Install Location PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 38 3-2 Installation Procedure 5. Click [Next>] at the “Confirm Installation” dialog to start the installation. Figure 3-3. Confirm Installation 6. The progress of the installation is shown in the dialog below. Figure 3-4. Installing LANLook MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 39 Figure 3-5. Installation Complete A message may display during the installation to ask whether the user wishes to Note overwrite certain .ocx or .dll files. Users are advised not to overwrite any such files. PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 40: Chapter 4-Instrument Overview

    "Startup type" to "Manual". d. Click [Stop] > [Apply] > [OK]. 3. Insert the power cable to the rear of the MT8860C (connector L in Figure 4-4) and attach to the mains power supply. 4. Connect the remote interface cable from the rear of the MT8860C to the PC.
  • Page 41: Configuration For 802.11N Receiver Testing

    4-2 Configuration for 802.11n Receiver Testing Chapter 4 — Instrument Overview 5. Connect an RF cable from the test port on the front of the MT8860C (connector C in Figure 4-4) to the DUT. An antenna option (2000-1613-R) is also available as an alternative to an RF Note cable.
  • Page 42 (connector A in the figure on p4-5) to the GPIB interface on the PC. • If using Ethernet, refer to Appendix I for connection details. 7. Connect an RF cable from the test port on the front of the MT8860C (connector C in the MT8860C Front Panel figure on p4-4) to the DUT.
  • Page 43: Front Panel Layout

    10V DC Max AVOID S TATIC DISCHA RGE AVOID S TATIC DISCHA RGE Figure 4-3. MT8860C Front Panel WLAN Reference Input Used for input of an external reference radio. When not in use, the WLAN Reference Input should be terminated using the supplied N-type termination plug. This is particularly important when Rx testing is performed with an antenna connection.
  • Page 44: Rear Panel Layout

    Definable digital input and output. Ethernet Ethernet connector for remote operation. AC main power 85-264 VAC, 47- 63 Hz, 100 VA maximum. The MT8860C input automatically configures itself for the voltage applied. Once connected to the main power the instrument can be switched on using the switch on the front panel.
  • Page 45 4-4 Rear Panel Layout Chapter 4 — Instrument Overview PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 46: Chapter 5-Remote Connection

    LANLook is running in simulation mode. Remote Connection using the GPIB Interface 1. Check that the MT8860C has finished booting up and that the GPIB cable for remote operation is in place between the PC and the MT8860C. 2. Start LANLook and click [System Utilities] tab > [MT8860C Remote] tab.
  • Page 47 This can be averted by setting a forced delay in GPIB communication. Select the “Insert delay in GPIB communication” check box and specify the required delay in the entry box below. PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 48: Remote Connection Using The Ethernet Interface

    5-2 Remote Connection using the Ethernet Interface Remote Connection using the Ethernet Interface 1. Check that the MT8860C has finished booting up and that the Ethernet cable for remote operation is in place between the PC or hub and the MT8860C.
  • Page 49: Test Mode Configuration

    5-3 Test Mode Configuration Chapter 5 — Remote Connection Test Mode Configuration With a remote connection established between the MT8860C and the PC as detailed above, the test mode must now be configured. 1. Click the [Wireless Test] tab. 2. The wireless settings display at the top of this tab as shown in the figure below.
  • Page 50: Direct Mode

    Tx and Rx testing without the need to establish a network connection between the MT8860C and WLAN device. This mode is also commonly referred to as non-signalling mode. The following WLAN Standards can be tested in Direct test mode: Table 5-2.
  • Page 51 5-3 Test Mode Configuration Chapter 5 — Remote Connection PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 52: Chapter 6-Establishing A Wlan Connection

    “Network” at the LANLook “Test Mode” setting. Wireless Setup 1. Establish a remote connection between the MT8860C and PC as detailed in chapter 5. 2. Click the [Wireless Test] tab. 3. The wireless settings display at the top of this tab as shown in the figure below.
  • Page 53: Wlan Connection With The Dut

    Chapter 6 — Establishing a WLAN Connection WLAN Connection with the DUT In Network mode there are four MT8860C role settings available: two in which a network is created by the MT8860C (‘Ad-Hoc (MT8860C creates)’ and ‘Infrastructure (AP)’), and two in which the MT8860C joins a network already in existence (‘Ad-Hoc (MT8860C joins)’...
  • Page 54: Ad-Hoc (Mt8860C Creates) / Infrastructure (Ap)

    Figure 6-3. [Network Setup] Tab In these modes the MT8860C creates a new WLAN network for the device to join. The difference between the modes lies in the nature of the WLAN architecture. In the “Ad-Hoc (MT8860C creates)” connection there are no access points, in the “Infrastructure (AP)”...
  • Page 55 [Beacon Configuration] Dialog Beacon Settings Operational Rate This setting is used to select the data rates that the MT8860C is Set: capable of supporting. The three selections (defined below) allow the user to control the data rate table in the beacon management frames.
  • Page 56 To prevent the DUT entering power save modes during testing, the MT8860C can be configured to state that it has more data to send. Three information bits can be set to indicate that more data is present:...
  • Page 57 If the DUT is on a static IP address, the IP properties can be configured manually by clearing this check box. The subnet mask and IP addresses for the MT8860C and DUT can then be entered.
  • Page 58 8. When the DUT has joined the network, select the SSID name within the “Device Tree” and click [Get MAC Addresses] to display the MAC address. Figure 6-6. [Network Setup] Tab with MAC Address in Device Tree MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 59 “Connected” appears in the task bar at the bottom of the [Anritsu LANLook] window. The SSID and BSSID also display in the task bar. Certain smart phone devices may request specification of a web page as part of the WLAN connection process.
  • Page 60: Ad-Hoc (Mt8860C Joins) / Infrastructure (Sta)

    Figure 6-8. [Network Setup] Tab In these modes the MT8860C joins a network created by the DUT. The difference between the modes lies in the nature of the WLAN architecture. In the Ad-Hoc connection there are no access points, in the infrastructure connection the DUT becomes the access point and the MT8860C takes on the role of one of the stations (STA) within the network.
  • Page 61 [Beacon Configuration] Dialog Beacon Settings Operational Rate This setting is used to select the data rates that the MT8860C is Set: capable of supporting. The three selections (defined below) allow the user to control the data rate table in the beacon management frames.
  • Page 62 To prevent the DUT entering power save modes during testing, the MT8860C can be configured to state that it has more data to send. Three information bits can be set to indicate that more data is present:...
  • Page 63 If the DUT is on a static IP address, the IP properties can be configured manually by clearing this check box. The subnet mask and IP addresses for the MT8860C and DUT can then be entered.
  • Page 64 Double click the MAC address, or select it and click [Connect]. 6. When a connection is established the word “Connected” appears in the task bar at the bottom of the [Anritsu LANLook] window. The SSID and BSSID also display in the task bar.
  • Page 65 6-2 WLAN Connection with the DUT Chapter 6 — Establishing a WLAN Connection 6-14 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 66: Chapter 7-802.11B/G/A Transmitter Testing In Network Mode

    Data Frame Analysis In this configuration, the MT8860C transmits 'ICMP echo request' data packets to the DUT. This packet type contains a control message that instructs the DUT to re-transmit the data received. The 'ICMP echo reply' packets returned by the DUT are then captured by the MT8860C built-in transmitter analyzer.
  • Page 67: Ack Frame Analysis

    Chapter 7 — 802.11b/g/a Transmitter Testing in Network Mode ACK Frame Analysis In this configuration, the MT8860C transmits 'Unicast' data packets to the DUT and then analyzes the ACK packets returned by the DUT. This testing methodology is specified by the CTIA and Wi-Fi Alliance in the CWG Test Plan that is used to evaluate the RF Performance of Wi-Fi Mobile Converged Devices.
  • Page 68 Chapter 7 — 802.11b/g/a Transmitter Testing in Network Mode 7-1 Test Methodology Procedure 1. Establish a remote connection between the MT8860C and PC as detailed in chapter 5. 2. Establish a WLAN connection between the MT8860C and the DUT as detailed in chapter 6.
  • Page 69: Loopback Configuration

    1. Click [Tx Characteristics…] to display the dialog shown below. This dialog is used to specify the expected Tx characteristics of the DUT. The packet structure settings define the data transmitted by the MT8860C which is subsequently looped back from the DUT.
  • Page 70: Analysis Configuration

    Preamble settings are not applicable for OFDM data rates. Note Analysis Configuration 1. Configure the MT8860C as required to allow analysis of the data being looped back from the DUT. Settings can be made in two ways:- Manually: The MT8860C can be configured manually using the “Analysis Configuration”...
  • Page 71 Note “Input Level Range” can be set to “Auto Range Low” to prevent damage to the MT8860C input that may be caused when, for example, a sudden power change occurs from range 3 to + 27 dBm. 3. Specify the “Data Capture” settings as detailed below.
  • Page 72 5. Click [Gate Settings…] to display the dialog below. Figure 7-6. [Gate Setup] Dialog The position of the measurement gates can be defined by entering the start positions and the total gate width. MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 73: Measurement Window Configuration

    IQ constellation (#1) Spectral profiles (#1) Spectral flatness (#1) (#1) Not supported when MT8860C is configured for ACK frame analysis. Refer to page 7-2 for details. For Data frame analysis, up to three transmitter measurements can be displayed simultaneously and each of the measurements gives access to a number of different statistics.
  • Page 74: Tx Advanced Settings

    Each of the maximum and minimum values is joined by a line to give a broad trace such as that shown in the example below MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 75 OFDM signal. Spectral Profile Settings Click [Spectral Profile Settings] to display the dialog below. Figure 7-9. Spectral Profile Settings 7-10 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 76 Note: Only applicable for DSSS data rates Dither Mode Dither mode can be used to determine whether spurs in the spectral data are originating from the MT8860C or from the DUT. If generated internally, spurs are removed by making three measurements using differing down conversion offsets.
  • Page 77 EVM, chip clock and symbol clock measurements are performed over the analysis lengths specified Table 7-5. DSSS and OFDM EVM and Clock Statistics Minimum Maximum Default DSSS EVM 11000 1000 DSSS Chip Clock 3300 30250 5500 OFDM EVM OFDM Symbol Clock 7-12 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 78 “Auto configure Analysis Length” .When selected, the analysis lengths (applicable for the selected WLAN standard) are automatically configured to a valid value when the "Auto configure based on Tx Characteristics" operation is performed. MT8860C Operation Manual PN: 13000-00258 Rev. M 7-13...
  • Page 79: Running Tests

    However, users should understand that the response of the DUT will depend upon the network type selected (infrastructure / Ad-Hoc) and the DUT type (AP / STA). The “Wireless Mode” settings determine the conditions under which the MT8860C performs measurements. The settings are used to configure the internal reference radio and to select the modulation format for EVM analysis.
  • Page 80: Power Profile

    The peak power values display in the “Pk (dBm)” column of the table directly beneath the power profile trace. Peak power is the absolute maximum of the packet within the gate width period. MT8860C Operation Manual PN: 13000-00258 Rev. M 7-15...
  • Page 81: Average Transmitter Power

    10 dBm / MHz 5725 - 5825 MHz 29 dBm 5825 MHz 30 dBm As is the case for all power measurements, the average power is calculated from within the specified gate area only. 7-16 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 82: Transmit Power-On Ramp

    The MT8860C locates the rise and fall on either side of the gate. For IEEE 802.11b, the specification states that the power-on ramp for the region between 10% and 90% of maximum power must not exceed 2 µs.
  • Page 83: Transmit Power-Down Ramp

    Settings...], click the [Power Profile Settings] tab and select “CF” from the “Measurement Type” frame. The crest factor represents the difference in dB between the peak and average power of the signal within the gate. 7-18 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 84: Ccdf Measurements

    2. Select the appropriate WLAN standard from the [Wireless Test] tab (see Table 6.3). 3. Select “CCDF Profiles” from one of the drop-down fields in the “Measurements” frame. 4. Click [Run Once] or [Run Continuous]. Figure 7-14. [CCDF Profiles] Window MT8860C Operation Manual PN: 13000-00258 Rev. M 7-19...
  • Page 85: Spectrum Profile

    5. Select “Spectrum Mask” from the “Measurement Type” frame. 6. Click [Run Once] or [Run Continuous]. The MT8860C applies the spectral mask for the selected WLAN standard. The results tables beneath the trace are used to display the pass / fail status for each of the mask elements.
  • Page 86 -22 MHz fc -11 MHz fc +11 MHz fc +22 MHz Figure 7-16. Spectrum Mask Compliance for DSSS Note Information on how to edit the spectrum mask can be found in chapter 13. MT8860C Operation Manual PN: 13000-00258 Rev. M 7-21...
  • Page 87: Rf Carrier Suppression (Dsss Only)

    7-5 Spectrum Profile Chapter 7 — 802.11b/g/a Transmitter Testing in Network Mode 802.11g / 802.11a (OFDM Data Rates) Not supported when MT8860C is configured for ACK frame analysis. Refer to Note page 7-2 for details. Figure 7-17. [Spectral Profile] Window The figure above shows a typical spectral profile for 802.11g / 802.11a.
  • Page 88: Power Spectral Density (Psd)

    9 - Transmitter Testing in Direct Mode. Note As part of the EVM measurement process (see 7-6), the MT8860C includes an IQ offset measurement that returns the actual carrier feedthrough normalized to the mean power at the symbol timings. This measurement does not require a special test signal to be generated by the DUT and so can be performed in Network Mode.
  • Page 89: Occupied Bandwidth

    Profiles] window changes to display the OBW results. The value within the “OBW” cell of the table indicates the frequency within which the specified percentage of power is contained. Occupied bandwidth Figure 7-21. Occupied Bandwidth 7-24 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 90: Iq Constellation

    Chapter 7 — 802.11b/g/a Transmitter Testing in Network Mode 7-6 IQ Constellation IQ Constellation (EVM Analysis) Not supported (for DSSS or OFDM data rates) when MT8860C is configured for Note ACK Frame Analysis. Refer to page 7-2 for details. The IEEE 802.11 specification uses a metric called Error Vector Magnitude (EVM) as a measure of modulation quality.
  • Page 91: B / 802.11G (Dsss Data Rates)

    Users should note that although IQ constellation measurements can be performed Note at a data rate of 1 Mbps (DBPSK modulation), the IEEE 802.11b specification stipulates that the measurement should be made using DQPSK modulation. 7-26 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 92 The center frequency measurement results are also displayed in the dialog above. The 802.11g specification stipulates that the center frequency tolerance shall be better than ±25 ppm. For 802.11a, the specification stipulates that the transmit center frequency tolerance shall be ±20 ppm maximum. MT8860C Operation Manual PN: 13000-00258 Rev. M 7-27...
  • Page 93: G / 802.11A (Ofdm Data Rates)

    Pilot sub-carriers Figure 7-25. OFDM Modulation In addition to the modulation constellations, the MT8860C can be used to display graphical results for EVM vs sub-carrier and EVM vs. symbol . These may be of particular use when a detailed analysis of the cause of distortion is required.
  • Page 94 The center frequency measurement results are also displayed in the dialog above. The 802.11g specification stipulates that the center frequency tolerance shall be better than ±25 ppm. For 802.11a, the specification stipulates that the transmit center frequency tolerance shall be ±20 ppm maximum. MT8860C Operation Manual PN: 13000-00258 Rev. M 7-29...
  • Page 95 Carrier leakage is measured during the 8 µs channel estimation phase and is relative to the average power of the -16 to +16 sub-carriers. The 802.11a specification stipulates that such leakage shall not exceed -15 dB relative to overall transmitted power. 7-30 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 96: Evm Vs Sub-Carrier

    Chapter 7 — 802.11b/g/a Transmitter Testing in Network Mode 7-7 EVM vs Sub-Carrier EVM vs Sub-Carrier (OFDM only) Not supported when MT8860C is configured for ACK Frame Analysis. Refer to Note page 7-2 for details. Although not a defined measurement of the IEEE, the EVM vs Sub-Carrier measurement is a powerful analysis tool that displays the average and max / min EVM for each OFDM channel.
  • Page 97: Evm Vs Symbol

    7-8 EVM vs Symbol Chapter 7 — 802.11b/g/a Transmitter Testing in Network Mode EVM vs Symbol (OFDM only) Not supported when MT8860C is configured for ACK Frame Analysis. Refer to Note page 7-2 for details. Although not a defined measurement of the IEEE, the EVM vs Symbol measurement is a powerful analysis tool that displays the average and max / min EVM for each symbol in the gate.
  • Page 98: Spectral Flatness

    The new limit values are sent automatically to the MT8860C when the user releases the mouse button. Channel measurements that fall outside of the limits of the mask display in red and also carry a small label that appears near the cursor to say how many times that channel failed.
  • Page 99: Numeric Results

    2. Select “Numeric Results Only” in the “Measurement Window Configuration” frame. 3. Click [Run Once] or [Run Continuous] to view the results. The figure below shows the numeric results window for an OFDM data rate. Figure 7-30. [Tx Tests Numeric Results] Window 7-34 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 100: Chapter 8-802.11B/G/A Receiver Testing In Network Mode

    The DUT returns acknowledgments (ACKs) to notify the MT8860C of the receipt of each packet, and this data is utilized to calculate the sensitivity. This combination of settings has the advantage to the user that receiver sensitivity calculations are made entirely within the MT8860C;...
  • Page 101: Per Specifications

    –74 –70 –66 –65 1. Establish a remote connection between the MT8860C and PC as detailed in chapter 5. 2. Establish a WLAN connection between the MT8860C and the DUT as detailed in chapter 6. PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 102: Packet Type

    1. Click the [Rx Testing] tab shown below. Figure 8-2. [Rx Testing] Tab 2. Specify the type of transmission to be sent from the MT8860C to the device. Unicast: This is the default setting in which the MT8860C transmits packets to a single DUT.
  • Page 103: Packet Structure

    8-1 Test Methodology Chapter 8 — 802.11b/g/a Receiver Testing in Network Mode Broadcast: In broadcast mode the MT8860C transmits packets on a fixed channel to all devices that are in a connection. The 802.11 standard specifies the broadcast address as FF-FF-FF-FF-FF-FF. In broadcast mode the DUT(s) do not return ACKs to the MT8860C.
  • Page 104: Fixed Power Level

    1. Follow the setup instructions detailed at the start of this chapter. 2. Click the [Fixed Level] tab shown above. 3. Set the required MT8860C transmission power level at the “DUT Rx Level” setting. 4. Click [Run Once] to display a table of PER/FRR numeric results, or click [Run Continuous] to display both the numeric results table and a history trace as shown below.
  • Page 105: Varying Power Level

    Varying Power Level In this test the transmission power from the MT8860C is stepped down by a specified amount to find the point at which an acceptable threshold is reached.
  • Page 106 Chapter 8 — 802.11b/g/a Receiver Testing in Network Mode 8-3 Varying Power Level Figure 8-6. PER Sensitivity Search MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 107: Interference

    PER with Channel Interference In addition to the normal test configuration detailed earlier, an external signal generator can be coupled to the MT8860C to measure adjacent or alternate channel rejection. Adjacent Channel Rejection Specifications For DSSS data rates, adjacent channel rejection is defined between any two channels with 25 MHz separation.
  • Page 108 (dB) rejection (dB) 1. Connect a signal generator to the interferer input on the front of the MT8860C. 2. Set the signal generator to transmit on the required channel. 3. Follow the setup instructions detailed in “” at the start of this chapter.
  • Page 109 8-4 Interference Chapter 8 — 802.11b/g/a Receiver Testing in Network Mode 8-10 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 110: Chapter 9-802.11B/G/A Transmitter Testing In Direct Mode

    The advantage to the user of testing in the mode is that tests can be conducted without the need to establish a WLAN connection between the MT8860C and the DUT.
  • Page 111: Wireless Settings

    DUT. 1. Establish a remote connection between the MT8860C and PC as detailed in chapter 5. 2. Click the [Wireless Test] tab.
  • Page 112: Configuring Test Settings

    Chapter 9 — 802.11b/g/a Transmitter Testing in Direct Mode 9-3 Configuring Test Settings Configuring Test Settings DUT Settings 1. Click the [Tx Testing] tab shown below. Figure 9-3. [Tx Testing] Tab MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 113 For DSSS rates, the minimum value equates to 300 us (3300 chips). For OFDM data rates, the minimum value equates to 64 us (16 symbols). The maximum data length values for 1 Mbps and 2 Mbps equate to 5 ms. PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 114: Analysis Configuration

    Note Preamble settings are not applicable for OFDM data rates. Analysis Configuration 1. Configure the MT8860C as required to allow analysis of the data being transmitted from the DUT. Settings can be made in two ways:- Manually: The MT8860C can be configured manually using the “Analysis Configuration”...
  • Page 115 Settings...] and selecting the required option on the [Spectral Profile Settings] tab. “Input Level Range” can be set to “Auto Range Low” to prevent damage to the MT8860C input that may be caused when, for example, a sudden power change occurs from range 3 to + 27 dBm.
  • Page 116 BNC connect (“Digital In 1”) on the rear of the MT8860C. Free run: Triggering is performed continuously. Video: Auto trigger from the RF power at the IF of the MT8860C. Edge: Select whether triggering is performed on the rising or falling edge of the pulse. Level: Specify the power level.
  • Page 117: Measurement Window Configuration

    Path Loss Settings If required, a signal level correction table can be used to compensate for test system and cable loss effects. Refer to chapter 14 (section 14-15) for details. PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 118: Tx Advanced Settings

    Each of the maximum and minimum values is joined by a line to give a broad trace such as that shown in the example below MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 119 OFDM signal. Spectral Profile Settings Click [Spectral Profile Settings] to display the dialog below. Figure 9-9. Spectral Profile Settings 9-10 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 120 Note: Only applicable for DSSS data rates Dither Mode Dither mode can be used to determine whether spurs in the spectral data are originating from the MT8860C or from the DUT. If generated internally, spurs are removed by making three measurements using differing down conversion offsets.
  • Page 121 EVM, chip clock and symbol clock measurements are performed over the analysis lengths specified Table 9-4. DSSS and OFDM EVM and Clock Statistics Minimum Maximum Default DSSS EVM 11000 1000 DSSS Chip Clock 3300 30250 5500 OFDM EVM OFDM Symbol Clock 9-12 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 122 Analysis Length” .When selected, the analysis lengths (applicable for the selected WLAN standard) are automatically configured to a valid value when the "Auto configure based on Tx Characteristics" operation is performed. MT8860C Operation Manual PN: 13000-00258 Rev. M 9-13...
  • Page 123: Running Tests

    However, users should understand that the response of the DUT will depend upon the network type selected (infrastructure / Ad-Hoc) and the DUT type (AP / STA). The “Wireless Mode” settings determine the conditions under which the MT8860C performs measurements. The settings are used to configure the internal reference radio and to select the modulation format for EVM analysis.
  • Page 124: Power Profile

    The peak power values display in the “Pk (dBm)” column of the table directly beneath the power profile trace. Peak power is the absolute maximum of the packet within the gate width period. MT8860C Operation Manual PN: 13000-00258 Rev. M 9-15...
  • Page 125: Average Transmitter Power

    10 dBm / MHz 5725 - 5825 MHz 29 dBm 5825 MHz 30 dBm As is the case for all power measurements, the average power is calculated from within the specified gate area only. 9-16 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 126: Transmit Power-On Ramp

    The MT8860C locates the rise and fall on either side of the gate. For IEEE 802.11b, the specification states that the power-on ramp for the region between 10% and 90% of maximum power must not exceed 2 µs.
  • Page 127: Transmit Power-Down Ramp

    Settings...], click the [Power Profile Settings] tab and select “CF” from the “Measurement Type” frame. The crest factor represents the difference in dB between the peak and average power of the signal within the gate. 9-18 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 128: Ccdf Measurements

    2. Select the appropriate WLAN standard from the [Wireless Test] tab (see Table 8.3). 3. Select “CCDF Profiles” from one of the drop-down fields in the “Measurements” frame. 4. Click [Run Once] or [Run Continuous]. Figure 9-14. [CCDF Profiles] Window MT8860C Operation Manual PN: 13000-00258 Rev. M 9-19...
  • Page 129: Spectrum Profile

    5. Select “Spectrum Mask” from the “Measurement Type” frame. 6. Click [Run Once] or [Run Continuous]. The MT8860C applies the spectral mask for the selected WLAN standard. The results tables beneath the trace are used to display the pass / fail status for each of the mask elements.
  • Page 130 -22 MHz fc -11 MHz fc +11 MHz fc +22 MHz Figure 9-16. Spectrum Mask Compliance for DSSS Note Information on how to edit the spectrum mask can be found in chapter 13. MT8860C Operation Manual PN: 13000-00258 Rev. M 9-21...
  • Page 131: Rf Carrier Suppression (Dsss Only)

    2. Select the appropriate WLAN standard from the [Wireless Test] tab (see Table 8.3). 3. Select “Spectral Profiles” from one of the drop-down fields in the “Measurement Window Configuration” frame. 4. Click [Tx Testing] tab > [Tx Advanced Settings...] > [Spectral Profile Settings] tab. 9-22 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 132: Power Spectral Density (Psd)

    Note As part of the EVM measurement process (see 9-8), the MT8860C includes an IQ offset measurement that returns the actual carrier feedthrough normalized to the mean power at the symbol timings. Using the IQ offset, an estimate of the RF Carrier Suppression can be made.
  • Page 133: Occupied Bandwidth

    Profiles] window changes to display the OBW results. The value within the “OBW” cell of the table indicates the frequency within which the specified percentage of power is contained. Occupied bandwidth Figure 9-21. Occupied Bandwidth 9-24 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 134: Iq Constellation

    [Tx Advanced Settings] > [EVM Settings] tab. • The burst captured must contain at least the specified number of chips/symbols. • Independent analysis lengths for the DSSS and OFDM data rates are provided. MT8860C Operation Manual PN: 13000-00258 Rev. M 9-25...
  • Page 135: B / 802.11G (Dsss Data Rates)

    Users should note that although IQ constellation measurements can be performed Note at a data rate of 1 Mbps (DBPSK modulation), the IEEE 802.11b specification stipulates that the measurement should be made using DQPSK modulation. 9-26 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 136 The center frequency measurement results are also displayed in the dialog above. The 802.11g specification stipulates that the center frequency tolerance shall be better than ±25 ppm. For 802.11a, the specification stipulates that the transmit center frequency tolerance shall be ±20 ppm maximum. MT8860C Operation Manual PN: 13000-00258 Rev. M 9-27...
  • Page 137: G / 802.11A (Ofdm Data Rates)

    Pilot sub-carriers Figure 9-25. OFDM Modulation In addition to the modulation constellations, the MT8860C can be used to display graphical results for EVM vs sub-carrier and EVM vs. symbol . These may be of particular use when a detailed analysis of the cause of distortion is required.
  • Page 138 The center frequency measurement results are also displayed in the dialog above. The 802.11g specification stipulates that the center frequency tolerance shall be better than ±25 ppm. For 802.11a, the specification stipulates that the transmit center frequency tolerance shall be ±20 ppm maximum. MT8860C Operation Manual PN: 13000-00258 Rev. M 9-29...
  • Page 139 Carrier leakage is measured during the 8 µs phase and is relative to the average power of the -16 to +16 sub-carriers. The 802.11a specification stipulates that such leakage shall not exceed -15 dB relative to overall transmitted power. 9-30 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 140: Evm Vs Sub-Carrier

    ± 7 and ± 21 are the pilot carriers, the blue bars are the maximum and minimum values and the horizontal trace shows the average EVM. Figure 9-27. [EVM vs Sub Carrier] Window MT8860C Operation Manual PN: 13000-00258 Rev. M 9-31...
  • Page 141: Evm Vs Symbol

    3. Select “EVM vs Symbol” from one of the drop-down fields in the “Measurements” frame. 4. Click [Run Once] or [Run Continuous] to display a trace such as that shown below. Figure 9-28. [EVM vs Symbol] Window 9-32 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 142: Spectral Flatness

    The new limit values are sent automatically to the MT8860C when the user releases the mouse button. Channel measurements that fall outside of the limits of the mask display in red and also carry a small label that appears near the cursor to say how many times that channel failed.
  • Page 143: Numeric Results

    2. Select “Numeric Results Only” in the “Measurement Window Configuration” frame. 3. Click [Run Once] or [Run Continuous] to view the results. The figure below shows the numeric results window for an OFDM data rate. Figure 9-30. [Tx Tests Numeric Results] Window 9-34 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 144: Chapter 10-802.11B/G/A Receiver Testing In Direct Mode

    10-1 Test Methodology When testing the Rx sensitivity of a device in Direct Mode, the MT8860C is configured to transmit a specified number of data packets. After the final packet has been transmitted, a baseband register (internal to the DUT) is read.
  • Page 145: Per Specifications

    A noise figure (NF) of 10 dB and an implementation loss of 5 dB are assumed. Table 10-1. Sensitivity by Data Rate Data rate (Mbps) Minimum sensitivity (dBm) –82 –81 –79 –77 –74 –70 –66 –65 10-2 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 146: Wireless Settings

    10-2 Wireless Settings 10-2 Wireless Settings 1. Establish a remote connection between the MT8860C and PC as detailed in chapter 5. 2. Click the [Wireless Test] tab. 3. The wireless settings display at the top of this tab as shown in the figure below.
  • Page 147: Configuring Test Settings

    Packet Type 1. Click the [Rx Testing] tab shown below. Figure 10-3. [Rx Testing] Tab 2. Specify the type of transmission to be sent from the MT8860C to the device. Unicast: This is the default setting in which the MT8860C transmits packets with a unique MAC address specified by the user.
  • Page 148: Packet Structure

    • Measuring PER or FRR at a fixed power level • Measuring PER or FRR at a varying power level • Measuring PER or FRR in broadcast mode • Measuring PER or FRR with co-channel or adjacent channel interference MT8860C Operation Manual PN: 13000-00258 Rev. M 10-5...
  • Page 149: Fixed Power Level

    1. Follow the setup instructions detailed at the start of this chapter. 2. Click the [Fixed Level] tab shown above. 3. Set the required MT8860C transmission power level at the “DUT Rx Level” setting. 4. Click [Run Once] to initiate the transmission of packets.
  • Page 150: Adjacent Channel Rejection Specifications

    (dB) rejection (dB) 1. Connect a signal generator to the interferer input on the front of the MT8860C. 2. Set the signal generator to transmit on the required channel. 3. Follow the setup instructions detailed at the start of this chapter.
  • Page 151 The returned value should be used as an offset for the interfering signal when making adjacent channel measurements. The typical path loss from the interferer input to the test port is 22 10-8 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 152: Chapter 11-802.11N Transmitter Testing In Direct Mode

    MT8860C units installed with option 17 can perform 802.11n transmitter measurements. The MN8861A receiver accessory (purchased separately) is not required for Note 802.11n transmitter testing. A WLAN connection between the MT8860C and the DUT is not required in order to perform 802.11n Tx testing. 11-1 Test Methodology For 802.11n testing, control software supplied by the chipset vendor is used to configure the...
  • Page 153: Overview

    MCS data rates for long and short guard intervals. 11-3 Wireless Setup 1. Establish a remote connection between the MT8860C and PC as detailed in chapter 5. 2. Click the [Wireless Test] tab. 3. Click the [Tx Testing] tab. 4. The wireless settings display as shown in the figures below.
  • Page 154 Data is transmitted over a signal with 20 MHz bandwidth in the upper side band of a 40 MHz channel. 40 MHz Lower Data is transmitted over a signal with 20 MHz bandwidth in the lower side band of a 40 MHz channel. MT8860C Operation Manual PN: 13000-00258 Rev. M 11-3...
  • Page 155: Configuring Test Settings

    / RF connector of the DUT. 11-4 Configuring Test Settings DUT Settings 1. Display the [Tx Testing] tab for 802.11n as shown in the figure below. Figure 11-3. [Tx Testing] Tab 11-4 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 156 Table 11-1. Non-HT Minimum and Maximum Data Length by Data Rate Data Rate (Mbps) Minimum data length (bytes) Maximum data length (bytes) 1,250 3,440 6,875 3,750 5,625 7,500 11,250 15,000 22,500 30,000 33,750 MT8860C Operation Manual PN: 13000-00258 Rev. M 11-5...
  • Page 157 144 bits, and the short with 72. A short preamble setting equates to more payload data being transmitted with each packet for a given timeslot. For 1 Mbps a long preamble is used. Note Preamble settings are not applicable for OFDM data rates. 11-6 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 158: Analysis Configuration

    Chapter 11 — 802.11n Transmitter Testing in Direct Mode 11-4 Configuring Test Settings Analysis Configuration 1. Configure the MT8860C as required to allow analysis of the data being transmitted from the DUT. Settings can be made in two ways:- Manually: The MT8860C can be configured manually using the “Analysis...
  • Page 159 BNC connect (“Digital In 1”) on the rear of the MT8860C. Free run: Triggering is performed continuously. Video: Auto trigger from the RF power at the IF of the MT8860C. Edge: Select whether triggering is performed on the rising or falling edge of the pulse. Level: Specify the power level.
  • Page 160: Measurement Window Configuration

    LANLook or remote interface. 3. If trace results are not required select “Numeric Results Only” to replace the trace window(s) with a single window of numeric result tables. MT8860C Operation Manual PN: 13000-00258 Rev. M 11-9...
  • Page 161: Path Loss Settings

    Each of the maximum and minimum values is joined by a line to give a broad trace such as that shown in the example below 11-10 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 162 OFDM signal. Spectral Profile Settings Click [Spectral Profile Settings] to display the dialog below. Figure 11-9. Spectral Profile Settings MT8860C Operation Manual PN: 13000-00258 Rev. M 11-11...
  • Page 163 Note: Only applicable for DSSS data rates Dither Mode Dither mode can be used to determine whether spurs in the spectral data are originating from the MT8860C or from the DUT. If generated internally, spurs are removed by making three measurements using differing down conversion offsets.
  • Page 164 EVM, chip clock and symbol clock measurements are performed over the analysis lengths specified Table 11-5. DSSS and OFDM EVM and Clock Statistics Minimum Maximum Default DSSS EVM 11000 1000 DSSS Chip Clock 3300 30250 5500 OFDM EVM OFDM Symbol Clock MT8860C Operation Manual PN: 13000-00258 Rev. M 11-13...
  • Page 165 “Auto configure Analysis Length”. When selected, the analysis lengths (applicable for the selected WLAN standard) are automatically configured to a valid value when the "Auto configure based on Tx Characteristics" operation is performed. 11-14 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 166: Running Tests

    However, users should understand that the response of the DUT will depend upon the network type selected (infrastructure / Ad-Hoc) and the DUT type (AP / STA). The “Wireless Mode” settings determine the conditions under which the MT8860C performs measurements. The settings are used to configure the internal reference radio and to select the modulation format for EVM analysis.
  • Page 167: Power Profile

    The peak power values display in the “Pk (dBm)” column of the table directly beneath the power profile trace. Peak power is the absolute maximum of the packet within the gate width period. 11-16 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 168: Average Transmitter Power

    7 dBm / MHz 5725 - 5825 MHz 30 dBm 5825 MHz As is the case for all power measurements, the average power is calculated from within the specified gate area only. MT8860C Operation Manual PN: 13000-00258 Rev. M 11-17...
  • Page 169: Transmit Power-On Ramp

    The MT8860C locates the rise and fall on either side of the gate. The IEEE specification states that the power-on ramp for the region between 10% and 90% of maximum power must not exceed 2 µs.
  • Page 170: Transmit Power-Down Ramp

    Settings...], click the [Power Profile Settings] tab and select “CF” from the Measurement Type frame. The crest factor represents the difference in dB between the peak and average power of the signal within the gate. MT8860C Operation Manual PN: 13000-00258 Rev. M 11-19...
  • Page 171: Ccdf (Ofdm Only)

    1. Follow the setup instructions detailed earlier in this chapter. 2. Select “CCDF Profiles” from one of the drop-down fields in the “Measurements” frame. 3. Click [Run Once] or [Run Continuous]. Figure 11-14. [CCDF Profiles] Window 11-20 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 172: Spectrum Profile

    4. Select “Spectrum Mask” from the “Measurement Type” frame. 5. Click [Run Once] or [Run Continuous]. The MT8860C applies the spectral mask for the selected WLAN standard. The results tables beneath the trace are used to display the pass / fail status for each of the mask elements.
  • Page 173 -22 MHz fc -11 MHz fc +11 MHz fc +22 MHz Figure 11-16. Spectrum Mask Compliance for DSSS Note Information on how to edit the spectrum mask can be found in chapter 13. 11-22 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 174 The transmitted signals must fall within the confines of the mask defined in the figure below. Figure 11-18. Spectral Mark Compliance for OFDM 20 MHz MT8860C Operation Manual PN: 13000-00258 Rev. M 11-23...
  • Page 175 The transmitted signals must fall within the confines of the mask defined in the figure below. Figure 11-20. Spectral Mask Compliance for OFDM 40 MHz 11-24 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 176: Rf Carrier Suppression (Dsss Only) (20 Mhz, Non-Ht)

    Note As part of the EVM measurement process (see 11-9), MT8860C includes an IQ offset measurement that returns the actual carrier feedthrough normalized to the mean power at the symbol timings. Using the IQ offset, an estimate of the RF Carrier Suppression can be made.
  • Page 177: Occupied Bandwidth

    Profiles] window changes to display the OBW results. The value within the “OBW” cell of the table indicates the frequency within which the specified percentage of power is contained. Occupied bandwidth Figure 11-23. Occupied Bandwidth 11-26 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 178: Iq Constellation

    [Tx Advanced Settings...] > [EVM Settings] tab. • The burst captured must contain at least the specified number of chips/symbols. • Independent analysis lengths for the DSSS and OFDM data rates are provided. MT8860C Operation Manual PN: 13000-00258 Rev. M 11-27...
  • Page 179: Dsss Data Rates (20 Mhz, Non-Ht)

    Users should note that although IQ constellation measurements can be performed Note at a data rate of 1 Mbps (DBPSK modulation), the IEEE 802.11b specification stipulates that the measurement should be made using DQPSK modulation. 11-28 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 180 The center frequency measurement results are also displayed in the dialog above. The 802.11g specification stipulates that the center frequency tolerance shall be better than ±25 ppm. For 802.11a, the specification stipulates that the transmit center frequency tolerance shall be ±20 ppm maximum. MT8860C Operation Manual PN: 13000-00258 Rev. M 11-29...
  • Page 181: Ofdm Data Rates (20 Mhz Or 40 Mhz, Non-Ht Or Ht)

    The OFDM packet structures are shown in Appendix C. In addition to the modulation constellations, the MT8860C can be used to display graphical results for EVM vs sub-carrier and EVM vs. symbol . These may be of particular use when a detailed analysis of the cause of distortion is required.
  • Page 182 Set the average to 20 to make measurements as specified in the IEEE standard. Table 11-10. Maximum Permissible EVM Values Per Data Rate, Non-HT Data Rate (Mbps) EVM (dB) EVM (% RMS) 56.2 39.8 31.6 22.3 15.8 11.2 MT8860C Operation Manual PN: 13000-00258 Rev. M 11-31...
  • Page 183 • for upper or lower 20 MHz transmissions in a 40 MHz channel, the center frequency leakage (center of a 40 MHz channel) shall not exceed -17 dB relative to overall transmitted power. 11-32 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 184: Evm Vs Sub-Carrier

    ± 7 and ± 21 are the pilot carriers, the blue bars are the maximum and minimum values and the horizontal trace shows the average EVM. Figure 11-29. [EVM vs Sub Carrier] Window: Example for 20 MHz Non-HT MT8860C Operation Manual PN: 13000-00258 Rev. M 11-33...
  • Page 185: Evm Vs Symbol

    2. Select “EVM vs Symbol” from one of the drop-down fields in the “Measurements” frame. 3. Click [Run Once] or [Run Continuous] to display a trace such as that shown below. Figure 11-30. [EVM vs Symbol] Window: Example for 20 MHz Non-HT 11-34 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 186 The new limit values are sent automatically to the MT8860C when the user releases the mouse button. Channel measurements that fall outside of the limits of the mask display in red and also carry a small label that appears near the cursor to say how many times that channel failed.
  • Page 187 2. Select “Numeric Results Only” in the “Measurement Window Configuration” frame. 3. Click [Run Once] or [Run Continuous] to view the results. The figure below shows the numeric results window for an OFDM data rate. Figure 11-32. [Tx Tests Numeric Results] Window 11-36 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 188 Chapter 12 — 802.11n Receiver Testing in Direct Mode 802.11n receiver testing can be performed on MT8860C units installed with option 17 and fitted with the MN8861A receiver accessory. The MN8861A receiver Note accessory attaches to the front of the MT8860C and sends 802.11n signals through the attenuator to the DUT.
  • Page 189 Refer to the tables in Appendix B for full details of MCS data rates for long and short guard intervals. 12-2 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 190 Chapter 12 — 802.11n Receiver Testing in Direct Mode 12-3 Wireless Setup 12-3 Wireless Setup 1. Establish a remote connection between the MT8860C and PC as detailed in chapter 5. 2. Click the [Wireless Test] tab. 3. Click the [Rx Testing] tab.
  • Page 191 9. At “Guard Interval” select the long or short guard interval. 10. At “DUT Tx Pwr” specify the power that the DUT is expected to transmit. The value should represent the signal level at the antenna / RF connector of the DUT. 12-4 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 192: Packet Type

    1. Click the [Rx Testing] tab shown below. Figure 12-3. [Rx Testing] Tab 2. Specify the MAC address of the packets transmitted by the MT8860C. The MN8861A can transmit Unicast packets. Broadcast and Multicast packets are not supported. Packet Structure 1.
  • Page 193: Measurements

    Figure 12-4. PER/FRR Setting 1. Follow the setup instructions detailed at the start of this chapter. 2. Click the [Fixed Level] tab shown above. 3. Set the required MT8860C transmission power level at the “DUT Rx Level” setting. 12-6 PN: 13000-00258 Rev. M...
  • Page 194: Varying Level Measurements

    Figure 12-5. PER at Fixed Power Level 12-6 Varying Level Measurements In this test the transmission power from the MT8860C is stepped down by a specified amount to find the point at which an acceptable threshold is reached. Figure 12-6. PER Setting for Sensitivity Search 1.
  • Page 195: Channel Interference

    12-7 Channel Interference Figure 12-7. PER with Channel Interference In addition to the normal test configuration detailed earlier, an external signal generator can be coupled to the MT8860C to measure adjacent or alternate channel rejection. 12-8 PN: 13000-00258 Rev. M...
  • Page 196 Not specified Not specified 1. Connect a signal generator to the interferer input on the front of the MT8860C. 2. Set the signal generator to transmit on the required channel. 3. Follow the setup instructions detailed at the start of this chapter.
  • Page 197 The returned value should be used as an offset for the interfering signal when making adjacent channel measurements. The typical path loss from the interferer input to the test port is 22 12-10 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 198: Chapter 13-Signal Generator (802.11B/G/A Only)

    (802.11b/g/a only) 13-1 Continuous Transmit Mode The MT8860C provides a signal generator mode of operation whereby a continuous transmit signal is generated at the test port connector. Signal generator mode may be of particular use in calculating the path loss of a test system prior to measurement operation or when testing the receiver of a DUT for RSSI (Received Signal Strength Indicator).
  • Page 199 Signal Generator Mode and Wireless Test Mode. Note Switching between modes may cause some parameters to change in order to maintain consistency. Path Loss settings are applied to the Signal Generator output signal if enabled. 13-2 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 200: Chapter 14-Using The Wlan Reference Input (802.11B/G/A Only)

    In this mode of operation, only the leveling loop and attenuator hardware of the MT8860C are used to provide a calibrated signal level at the Test Port Connector. In order that the correct signal level is produced at the test port connector, the following test conditions must be used: •...
  • Page 201: Procedure

    Chapter 14 — Using the WLAN Reference Input (802.11b/g/a only) 14-2 Procedure 1. Establish a remote connection between the MT8860C and the PC as detailed in chapter 2. Make the required wireless test settings. The wireless test settings are used to apply the correct calibration for the selected channel number.
  • Page 202 Chapter 14 — Using the WLAN Reference Input (802.11b/g/a only) 14-2 Procedure 4. Click [Rx Advanced Settings…] at the bottom of the page and set the Reference Radio to “External” as shown below. Figure 14-3. [Rx Advanced Settings] Dialog MT8860C Operation Manual PN: 13000-00258 Rev. M 14-3...
  • Page 203 7. If required, a signal level correction table can be used to compensate for test system and cable loss effects. Refer to chapter 13 for details. 8. Click the [Set DUT Rx Level] button. The MT8860C performs a leveling operation to produce the power level specified.
  • Page 204: Chapter 15-Common Procedures

    The user can choose to use an external reference source by making a connection to the “10 MHz Ref In” port on the rear of the MT8860C and following the procedure below. 1. Open LANLook and click the [System Utilities] tab.
  • Page 205: Ccdf - Setting Percentages

    Users should note that in order for the power distribution to be updated correctly, it Note is necessary to send the new percentage setting to the MT8860C by pressing [Run Once] or [Run Continuous]. 1. If measurements are in progress, click [Stop].
  • Page 206: Crest Factor / Rise/Fall Data - Selecting

    2. The [System Utilities] tab contains three further tabs. Click the [System Settings] tab. 3. Click [Preset MT8860C] to return the MT8860C to its default settings. When the [Preset MT8860C] button is clicked the MT8860C is returned to its Note default settings without further warning.
  • Page 207 (where Note xxxx is the four digits after the zeros in the MT8860C serial number). Once generated, the file in the browser can be saved as a text or html file and sent to Anritsu for analysis. 15-4 PN: 13000-00258 Rev.
  • Page 208: Gates - Positioning

    2. Click and drag the gate as required whilst still holding down the mouse button. 3. The gate values that display in the table beneath the trace are automatically updated. Figure 15-4. Positioning Gates MT8860C Operation Manual PN: 13000-00258 Rev. M 15-5...
  • Page 209 1. Click [Gate Settings…] on the [Tx Testing] sub-tab to display the dialog below. Figure 15-5. [Gate Setup] Dialog 2. Enter the gate delay position (start) and the total gate width as required in the dialog shown above. 15-6 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 210: Gpib Address - Changing

    5. Click the [System Settings] sub-tab to display the page below. Figure 15-6. [System] Tab 6. Enter the new GPIB address of the MT8860C in the “MT8860C GPIB Address” field. 7. Click [Change] to register the change at the unit.
  • Page 211: Graphs - Scaling

    Y-axis dBm levels. Enter the required values and click [OK]. Figure 15-7. [Y-Axis Settings] Dialog EVM Profiles Right click the required plot and select the 5%, 10%, 20%, or 50% scale command from the pop-up menu that displays. 15-8 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 212: Lan Ip Configuration - Changing

    15-9 LAN IP Configuration - Changing 15-9 LAN IP Configuration - Changing 1. Start LANLook and click [System Utilities] tab > [MT8860C Remote] tab. 2. Select “LAN” at the “Remote Interface” setting. 3. Enter the IP address or hostname and click [Connect].
  • Page 213: Lanlook Software - Upgrading

    15-10 LANLook Software - Upgrading Chapter 15 — Common Procedures 15-10 LANLook Software - Upgrading 1. Download the latest software package from the Anritsu website. To do this, go to http:// www.eu.anritsu.com/downloads/, select “MT8860C” from the drop down list, and click [Show Downloads].
  • Page 214: Max-Min Power Profile - Displaying

    4. Enter a percentage value as required at “OBW Percentage” and click [OK]. 5. The value in the “OBW (MHz)” cell of the table beneath the spectral profile trace changes automatically to indicate the frequency within which the specified percentage of power is contained. MT8860C Operation Manual PN: 13000-00258 Rev. M 15-11...
  • Page 215: Options - Enabling And Disabling

    Chapter 15 — Common Procedures 15-14 Options - Enabling and Disabling Options specified at the time of the MT8860C order are installed at Anritsu prior to shipment to the customer. Customers ordering options at a later date should follow the procedure below to enable the selected options upon delivery.
  • Page 216: Path Loss Table - Configuring

    15-15 Path Loss Table - Configuring 15-15 Path Loss Table - Configuring The MT8860C provides a signal level correction table that can be used to compensate for test system and cable loss effects. For each channel, independent Tx and Rx path loss values can be defined.
  • Page 217: Reference Radio - Enabling

    Path loss entries can be deleted from the list by selecting them and clicking [Delete]. Notes The MT8860C does not interpolate between loss values specified for non adjacent channels. Each entry within the path loss table applies to the selected channel only.
  • Page 218: Remote Commands - Sending From Lanlook

    15-17 Remote Commands - Sending from LANLook 15-17 Remote Commands - Sending from LANLook 1. Start LANLook, display the [System Utilities] tab and the [MT8860C Remote] sub-tab. 2. Select the required remote interface and establish a remote connection. 3. Click the [Diagnostics] sub-tab to display the page shown below.
  • Page 219: Settings - Saving To The Mt8860C

    Chapter 15 — Common Procedures 15-18 Settings - Saving to the MT8860C Changes made to the settings within LANLook can be saved to the MT8860C at any time. Saving the settings in this manner ensures that the changes made are retained even when LANLook is closed and subsequently re-started.
  • Page 220: Spectral Mask - Editing (Dsss Data Rates Only)

    15-21 Test Settings - Saving and Loading 1. To save test settings for future use, select [Save Test Settings..] from the [File] menu of the main [Anritsu LANLook] window. 2. Specify a name and location for the file to be generated in the usual windows manner.
  • Page 221: Traces - Copying To Clipboard

    Chapter 15 — Common Procedures 15-22 Traces - Copying to Clipboard 1. Maximize the main [Anritsu LANLook] window. 2. Enlarge the required plot window to the required size. The window can be enlarged to any size, but must remain within the area of the main window.
  • Page 222: Version Information - Viewing

    Chapter 15 — Common Procedures 15-27 Version Information - Viewing 15-27 Version Information - Viewing 1. Select [About Anritsu LANLook] from the [Help] menu of the main [Anritsu LANLook] window. The following window displays showing the software versions and build status.
  • Page 223 15-27 Version Information - Viewing Chapter 15 — Common Procedures 15-20 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 224: Chapter 16-Lanlook Source Code Guide

    A set of forms and associated modules used for the graphical user interface (GUI) and to define the top-level functionality. The code in this layer is specific to LANLook in its role as a virtual front panel for the MT8860C. It is not intended for re-use. • Interface layer A set of modules that provide a high level remote control API and other utility functions required by LANLook.
  • Page 225: Using The Lanlook Source Code

    MT8860xTests.bas modules or more directly to the GPIB_Utils module. The MT8860xSettings.bas and MT8860xTests.bas modules provide a set of dedicated functions for performing operations on the MT8860C. The GPIB_Utils.bas module is lower level and provides for the sending and receiving of data via GPIB or LAN interfaces.
  • Page 226: Using The Mt8860Xsettings Module

    LANLook performs parameter checking in the application layer. If the values of Note parameters passed are incorrect the MT8860C will respond with an error. This is handled in the GPIB_Utils.bas module. 16-4 Using the Interface Layer MT8860xTests Module The MT8860xTests.bas module contains functions for running test sequences.
  • Page 227: Using The Gpib_Utils Module

    The Run_Tx_Test() function updates a set of global variables declared in the Globals.bas module. None of the test functions provide the facility to set the MT8860C test parameters Note before running a test. This must be performed by calls to functions in the MT8860xSettings.bas module.
  • Page 228 Chapter 16 — LANLook Source Code Guide 16-6 Examples 16-6 Examples The Send_Command() function is used when the MT8860C is not required to return data. For example when setting the data rate: Command_String="MEASCFG 1,TXRATE,11" Call Send_Command(GPIB_BOARD_NUMBER, GPIB_Address, Command_String) The data_request() function is used when the MT8860C is required to return data. The data received is then returned in the string variable My_data.
  • Page 229 16-6 Examples Chapter 16 — LANLook Source Code Guide 16-6 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 230 The directory should now contain 35 files. d. Power-on the MT8860C and wait until the boot-up process has completed as detailed in chapter 4. e. Connect a GPIB cable from the GPIB interface on the PC to the MT8860C. MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 231 Launch the MT8860x firmware bootloader application. Go to the Windows [Programs] directory and select Anritsu > MT8860x Bootloader. g. Enter the GPIB address of the MT8860C and click [Check ID]. The serial number of the MT8860C and the currently installed firmware version display to the right of [Check ID].
  • Page 232 The directory c:\temp\MT8860C Upgrade should now contain 35 files. d. Connect the MT8860C to the LAN. Refer to Appendix I for details on setting up the LAN interface. e. Power-on the MT8860C and wait until the boot-up process has completed as detailed in chapter 4.
  • Page 233 The firmware upgrade operation is completed when the MT8860C has performed 2 power-on operations. a. Power-on the MT8860C for the first time and wait until the boot-up process is complete. This may take several minutes and is indicated by the "On" LED flashing while the "Controller Activity"...
  • Page 234 Appendix A — Specifications A-1 MT8860C Specification Characteristic / Parameter Specification Wireless Test Mode Standards supported: IEEE Std 802.11b-1999 IEEE Std 802.11g-2003 IEEE Std 802.11a-1999 (Option 14) IEEE Std 802.11n-2009 (Option 17) IEEE Std 802.11-2007 Supported Channels 802.11b / 802.11g (DSSS) Channels 1 to 14 (2412 –...
  • Page 235 A-1 MT8860C Specification Appendix A — Specifications Data Rates and Modulation 802.11b / 802.11g (DSSS) 1 Mbps 11-chip Barker DBPSK 2 Mbps 11-chip Barker DQPSK 5.5 Mbps CCK DQPSK 11 Mbps CCK DQPSK 802.11g (OFDM) 6, 9, 12, 18, 24, 36, 48, 54 Mbps 802.11a...
  • Page 236 Appendix A — Specifications A-1 MT8860C Specification Network Mode In Network mode, standard protocol messaging is used to establish a network connection between the MT8860C and a (802.11b, 802.11g, 802.11a WLAN device. Once a connection is made, the receiver and only)
  • Page 237 A-1 MT8860C Specification Appendix A — Specifications ACK Frame Type The MT8860C transmits Unicast packets and then analyzes the ACK packets returned by the DUT in response. This testing methodology is specified by the CTIA / Wi-Fi Alliance in the CWG...
  • Page 238 (802.11b, 802.11g, 802.11a, 802.11n) Receiver Measurements The MT8860C transmits a defined number of packets to the DUT. Chipset vendor control software is required to read the DUT receiver packet count register Transmitter Measurements The DUT is configured for continuous transmission using chipset vendor control software.
  • Page 239 A-1 MT8860C Specification Appendix A — Specifications ± 0.6 dB (+24 dBm to -30 dBm) Accuracy Data Frame (#1) Type: ± 1.0 dB (-30 dBm to -50 dBm) ACK Frame Type: ± 0.8 dB (+24 dBm to -30 dBm) ± 1.2 dB (-30 dBm to -50 dBm)
  • Page 240 Appendix A — Specifications A-1 MT8860C Specification Chip Clock Frequency IEEE Std 802.11b-1999 / IEEE Std 802.11-2007 (18.4.7.5) Tolerance Definition Frequency error relative to 11MHz chip clock. Measurement averaged over a fully coded DSSS packet with minimum payload length of 3,300 chips (300 µs)
  • Page 241 This is the expected power level of the ACK packet transmitted by the DUT in response to a correctly received Unicast packet. This value is used by the MT8860C to calculate the amount of return path attenuation required to prevent MT8860C reference...
  • Page 242 As defined in the CTIA / Wi-Fi Alliance CWG RF Test Plan (FRR) FRR (%) = (ACKs received from DUT / data packets transmitted by MT8860C) x 100 Specification as for 18.4.8.1 (above) 802.11g Measurements The following applies to data rates 6, 9, 12, 18, 24, 36, 48 and 54 Mbps that use OFDM modulation 802.11a Measurements...
  • Page 243 A-1 MT8860C Specification Appendix A — Specifications 0.1 μs marker resolution with 10 μs time window Time Resolution Transmit Spectrum Mask IEEE Std 802.11g-2003 / IEEE Std 802.11-2007 (19.5.4) IEEE Std 802.11a-1999 / IEEE Std 802.11-2007 (17.3.9.2) Definition Display of Spectrum measurement derived from gate 1 or 2 Gate Width From gate 1 or 2, 50μs to 5.95ms...
  • Page 244 Appendix A — Specifications A-1 MT8860C Specification Symbol Clock Frequency IEEE Std 802.11g-2003 / IEEE Std 802.11-2007 (19.4.7.3) Tolerance IEEE Std 802.11a-1999 / IEEE Std 802.11-2007 (17.3.9.5) Definition Frequency error relative to 250 kHz symbol clock as per 19.4.7.3 / 17.2.9.5. Measurement averaged over a fully coded OFDM packet with minimum payload length of 16 symbols (64 µs)
  • Page 245 This is the expected power level of the ACK packet transmitted by the DUT in response to a correctly received Unicast packet. This value is used by the MT8860C to calculate the amount of return path attenuation required to prevent MT8860C reference radio receiver saturation.
  • Page 246 As defined in the CTIA / Wi-Fi Alliance CWG RF Test Plan (FRR) FRR (%) = (ACKs received from DUT / data packets transmitted by MT8860C) x 100 Specification as for 19.5.1 (above) 802.11n Measurements The following applies to the 11n High Throughput (HT) modes that use OFDM modulation (For non-HT modes, please refer to the 802.11b, 802.11g,...
  • Page 247 A-1 MT8860C Specification Appendix A — Specifications Frequency Span 20 MHz channel b/w: 70 MHz (fc ± 35 MHz) 40 MHz channel b/w: 130 MHz (fc ± 65 MHz) Flatness over Frequency ±1 dB Span Linearity ±0.8 dB (50 dB dynamic range CW measurements)
  • Page 248 Appendix A — Specifications A-1 MT8860C Specification Spurious Specification 2.4 GHz frequency 20 MHz < -45 dBc band: (With Dither channel b/w: (for all supported channels) Mode ON) 40 MHz ± (25 MHz to 40 MHz); channel b/w: < -30 dBc ±...
  • Page 249 A-1 MT8860C Specification Appendix A — Specifications Transmitter Center IEEE Std 802.11n-2009 (20.3.21.7.2) Frequency Leakage Definition Measurement of the leakage of the center carrier Data Output Format Resolution dB to 2 decimal places Transmitter Spectral IEEE Std 802.11n-2009 (20.3.21.2) Flatness...
  • Page 250 Sensitivity Definition Packet Error Rate (PER) at defined power level Power Range -20 dBm to -100 dBm at MT8860C test port Mode Direct: MT8860C transmits defined number of packets Data Packet Structure Complies with 802.11 specifications for MAC header formatting,...
  • Page 251 A-1 MT8860C Specification Appendix A — Specifications Receiver Adjacent IEEE Std 802.11n-2009 (20.3.22.2) Channel Rejection Receiver Non-adjacent IEEE Std 802.11n-2009 (20.3.22.3) Channel Rejection Definition Adjacent Channel measurements made with external modulation signal source (e.g., MG3700A) using external interferer port Receiver Maximum Input IEEE Std 802.11n-2009 (20.3.22.4)
  • Page 252 Gate positions set directly by remote command 10 μs to 5.95 ms Settable Gate Range TX Analysis auto-configure Using this function, the following parameters are automatically function configured by the MT8860C; Input Level Range Pre-trigger Capture Width Trigger settings Measurement Gate settings...
  • Page 253 802.11a -50 dBm (6 Mbps) -27 dBm (54 Mbps) Signal Generator Mode In this mode, MT8860C can be configured to transmit a continuous RF signal at the Test Port (802.11b, 802.11g, 802.11a only) NOTE: Transmitter measurements are not supported. For...
  • Page 254 Independent values can be specified for the TX and RX paths. When the path loss table is enabled, the TX and RX path loss values for the selected channel are applied to both the measurement results and MT8860C transmitted power level. Reference Frequency...
  • Page 255 Allows an external reference radio to be used for DUT receiver measurements using only the leveling loop and attenuator of MT8860C. In this mode, no measurements are supported by MT8860C. For correct leveling operation, the external radio must transmit a signal with the following characteristics;...
  • Page 256 The user can select between one of the following; 1. The TX trigger signal from the internal reference radio 2. The trigger signal from the MT8860C when the signal trigger is set to RF 3. The trigger signal from the MT8860C when the signal trigger is...
  • Page 257 A-1 MT8860C Specification Appendix A — Specifications Operating Temperature +5°C to +40°C Range Operating Humidity <75% non condensing Conditions of Storage Temperature -20°C to +70°C Safety Conforms with the product safety standard BS EN 61010-1 (Equivalent to IEC 61010-1) for class 1 portable equipment, for use in a Pollution Degree 2 environment.
  • Page 258 MN8861A Supplementary Specification Connectors Test Port N (m) Digital interface Tx On line BNC TTL output connectors to Digital In 2 on MT8860C Active High for the length of the packet Control interface General Power supply (supplied) 85 to 264 V AC...
  • Page 259 • National Instruments VISA Run-Time engine • CombiTest MT8860x Plug-in Operation Manual (pdf) • MT8860C WLAN Test Set Operation manual (pdf) • MT8860C WLAN Test Set Remote programming manual (pdf) Options and accessories MT8860C-001 (Option 1) Rack mount kit (CANNOT be ordered with option 2)
  • Page 260 13000-00258 MT8860C WLAN Test Set Operation Manual 13000-00259 MT8860C WLAN Test Set Remote Programming Manual (#1): The instrument is calibrated with CW signals. A modulation correction factor is applied for all measurements on DSSS and OFDM packets. MT8860C Operation Manual PN: 13000-00258 Rev.
  • Page 261 A-1 MT8860C Specification Appendix A — Specifications A-28 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 262 2417 2452 2422 2457 2427 2462 2432 2467 2437 2472 2442 Table B-4. 802.11g Supported Data Rates Supported Data Rates (Mbps) 1, 2, 5.5, 11 6, 9, 12, 18, 24, 36, 48, 54 MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 263 5660 5280 5680 5300 5700 5320 5745 5500 5765 5520 5785 5540 5805 5560 5825 Table B-6. 802.11a Supported Data Rates Supported Data Rates (Mbps) 6, 9, 12, 18, 24, 36, 48, 54 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 264 800 ns Guard Interval 400 ns Guard Interval 1, 2, 5.5, 11 13.0 14.4 6, 9, 12, 18, 24, 36, 48, 54 19.5 21.7 26.0 28.9 39.0 43.3 52.0 57.8 58.5 65.0 65.0 72.2 MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 265 800 ns Guard Interval 400 ns Guard Interval 1, 2, 5.5, 11 13.5 15.0 27.0 30.0 6, 9, 12, 18, 24, 36, 48, 54 40.5 45.0 54.0 60.0 81.0 90.0 108.0 120.0 121.5 135.0 135.0 150.0 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 266 800 ns Guard Interval 400 ns Guard Interval 1, 2, 5.5, 11 13.0 14.4 6, 9, 12, 18, 24, 36, 48, 54 19.5 21.7 26.0 28.9 39.0 43.3 52.0 57.8 58.5 65.0 65.0 72.2 MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 267 800 ns Guard Interval 400 ns Guard Interval 1, 2, 5.5, 11 13.5 15.0 27.0 30.0 6, 9, 12, 18, 24, 36, 48, 54 40.5 45.0 54.0 60.0 81.0 90.0 108.0 120.0 121.5 135.0 135.0 150.0 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 268 Masks and Carriers The 8011.n spectrum masks and associated carrier allocations are shown in the figures below. 20 MHz Non-HT Figure C-1. 20 MHz Non-HT Spectrum Mask Figure C-2. 20 MHz Non-HT Sub-Carrier Allocation MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 269 Figure C-3. 20 MHz HT Spectrum Mask Figure C-4. 20 MHz HT Sub-Carrier Allocation 40 MHz Non-HT (Upper) Figure C-5. 40 MHz Non-HT (Upper) Spectrum Mask Figure C-6. 40 MHz Non-HT (Upper) Sub-Carrier Allocation PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 270 Figure C-7. 40 MHz Non-HT (Lower) Spectrum Mask Figure C-8. 40 MHz Non-HT (Lower) Sub-Carrier Allocation 40 MHz HT (Upper) Figure C-9. 40 MHz HT (Upper) Spectrum Mask Figure C-10. 40 MHz HT (Upper) Sub-Carrier Allocation MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 271 Figure C-11. 40 MHz HT (Lower) Spectrum Mask Figure C-12. 40 MHz HT (Lower) Sub-Carrier Allocation 40 MHz HT Figure C-13. 40 MHz HT Spectrum Mask Figure C-14. 40 MHz HT Sub-Carrier Allocation PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 272 Figure C-15. 40 MHz HT (Duplicate) Spectrum Mask Figure C-16. 40 MHz HT (Duplicate) Sub-Carrier Allocation 40 MHz Non-HT (Duplicate) Figure C-17. 40 MHz Non-HT (Duplicate) Spectrum Mask Figure C-18. 40 MHz Non-HT (Duplicate) Sub-Carrier Allocation MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 273 Appendix C — 802.11n Spectrum Masks and Carriers PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 274 Packet Error Rate PPDU Phy Protocol Data Unit Radio Frequency RSSI Received Signal Strength Indication Receive SSID Service Set Identifier Station Transmit Universal Serial Bus WLAN, W-LAN Wireless Local Area Network Wireless Medium MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 275 Appendix D — Terminology Glossary PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 276 Every effort will be made to ensure that a response is provided within three working days. E-3 Anritsu Service Centers A list of all Anritsu service centers is provided on our internet site at the following location: http://www.anritsu.com/contact.asp. MT8860C Operation Manual...
  • Page 277 E-3 Anritsu Service Centers Appendix E — Technical Support PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 278 RF component connector. A destructive pin depth is one that is too long in respect to the reference plane of the connector (see figure below). Figure F-1. N Connector Pin Depth Definition MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 279 The pin depth of DUT connectors should be measured to assure compatibility before attempting to mate them with Power Sensor connectors. An Anritsu Pin Depth Gaugeor equivalent can be used for this purpose. Figure F-2.
  • Page 280 • Verify that no cotton or other foreign material remains in the connector after cleaning • If available, use compressed air to remove foreign particles and to dry the connector • After cleaning, verify that the center pin has not been bent or damaged. MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 281 F-4 Cleaning Connectors Appendix F — Connector Care and Handling PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 282 2. Open [Regional and Language Options]. 3. Click the [Formats] tab. 4. Click [Customize this format...]. 5. Click the [Numbers] tab. 6. Select the point (.) setting from the "Decimal symbol" drop-down field. MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 283 G-2 Windows Vista Appendix G — PC Regional Settings PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 284 Considerations H-1 Windows Firewall Settings for Tx Testing When configured for Data Analysis mode, the MT8860C transmits ICMP (Internet Control Message Protocol) “echo request” data packets to the DUT. This packet type contains a control message that instructs the DUT to re-transmit the data received. Under certain circumstances however, the security settings on the PC may prevent the DUT from receiving the "echo request"...
  • Page 285 1. Select [Windows Firewall] from the Windows [Control Panel]. The [Windows Firewall] dialog displays. 2. Click the [General] tab, select “Off (not recommended)” and click [OK] to close. Figure H-1. [Windows Firewall] Dialog PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 286 3. Click the [Exceptions] tab, highlight “File and Printer Sharing” and click [Edit]. Figure H-2. Windows Firewall Exception Settings 4. Select “TCP 445” and click [OK] to close. Figure H-3. [Edit a Service] Dialog MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 287 3. Click the [Advanced] tab, and then click the ICMP [Settings...]. Figure H-4. Windows Firewall Advanced Settings 4. Select “Allow incoming echo request” and click [OK] to close. Figure H-5. [ICMP Settings] Dialog PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 288 1. Select [Windows Firewall] from the Windows [Control Panel]. The [Windows Firewall] dialog displays. 2. Click the [General] tab and clear the “Don’t allow exceptions” check box. 3. Click the [Advanced] tab, scroll the network connection settings, highlight “MT8860C Demo Device (66955)” and click [Settings...]. Figure H-6. Exception Settings 4.
  • Page 289 RF performance of Wi-Fi mobile converged devices, power-save mode should be disabled. Although the MT8860C does not detect the power-save state of a STA, a method is provided in the firmware that may enable the MT8860C to perform repeatable RF measurements on STA devices that have power-save mode enabled.
  • Page 290 • How the network is configured (DHCP enabled/disabled) • How the MT8860C is configured (SYSCFG LAN,MODE MANUAL/AUTO) 1. If the MT8860C is configured to use an AUTO IP address, but there is no DHCP server available, the MT8860C will default to the IP address 192.168.168.2 2.
  • Page 291 If the DHCP server does not use dynamic DNS, the <hostname> cannot be used Note to communicate with the MT8860C over the LAN. 3. If the MT8860C is configured to use a MANUAL IP address, the IP address can be configured manually using the SYSCFG LAN,ADDR command (default setting is 192.168.168.2).
  • Page 292 Figure I-3. Direct Connection to a Private LAN The interface hardware does not support auto MDIX ('Auto-cross'). Consequently, when connecting the MT8860C directly to a PC, a CAT5 crossover cable must be used. It is also recommended that DHCP is disabled on both the MT8860C and PC.
  • Page 293 For all methods described above, the follows steps should be taken when connecting the MT8860C to the LAN. 1. Power OFF the MT880C. 2. Connect the MT8860C as illustrated. 3. For methods 2 and 4, apply power to the Ethernet Hub or switch. 4. Power ON the MT8860C.
  • Page 294 I-3 LAN Interface Protocols VXI-11 The MT8860C supports the LAN interface protocol described in the VXI-11 standard. VXI-11 is an instrument control protocol based on Open Network Computing/Remote Procedure Call (ONC/RPC) interfaces running over TCP/IP. It is intended to provide GBIB capabilities such as SRQ (Service Request), status byte reading, and DCAS (Device Clear State) over a LAN interface.
  • Page 295 2. Right-click [Devices and Interfaces] and select [Create New…] from the pop-up menu. Figure I-6. Create New 3. From the [Create New…] screen, select [VISA TCP/IP Resource], and then click [Next>]. Figure I-7. VISA TCP/IP Resource PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 296 4. From the [Create New TCP/IP Resource…] screen, select “Manual Entry of LAN Instrument”, and click [Next>]. Figure I-8. [Create New VISA TCP/IP Resource] 5. Enter the hostname or IP address, and click [Validate]. Figure I-9. Enter Hostname MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 297 I-3 LAN Interface Protocols Appendix I — Remote Operation Using LAN 6. A message indicates whether a session can be established with the MT8860C. Figure I-10. Success Figure I-11. Error 7. Click [OK] to close the message. From the [Create New TCP/IP Resource…] screen click [Next>].
  • Page 298 I-3 LAN Interface Protocols 8. Click [Next>]. Figure I-13. Create Devices 9. Click [Finish]. The instrument is now registered and can be addressed via the resource string or alias name. Figure I-14. [General] Tab MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 299 Appendix I — Remote Operation Using LAN Clicking the [TCP/IP Settings] tab displays the following screen. Figure I-15. [TCP/IP Settings] Tab Clicking the [Web Page] tab displays the following screen. Figure I-16. [Web Page] Tab I-10 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 300 11. Commands can be sent to the instrument by selecting the viWrite. Enter the required command(s) in the Buffer window and click [Execute] to send the command(s) to the instrument. Figure I-18. ViWrite Tab MT8860C Operation Manual PN: 13000-00258 Rev. M I-11...
  • Page 301 12. Message response strings can be read back from the instrument by selecting the [viRead] tab. Click [Execute] to perform a read operation. Figure I-19. ViRead Tab 13. Close the VISA session, by selecting 'Close' from the drop-down menu. Figure I-20. Close Session I-12 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 302 I-3 LAN Interface Protocols Sockets LAN [5025] Socket LAN is a method used to communicate with the MT8860C over the LAN interface using the Transmission Control Protocol/Internet Protocol (TCP/IP). A socket is a fundamental technology used for computer networking and allows applications to communicate using standard mechanisms built into network hardware and operating systems.
  • Page 303 3. Enter the <hostname or IP Address> into the “Host” edit box and click [Connect]. If another session (FTP, Telnet, VXI or Socket LAN) is in progress the application will display the following response from the server. Figure I-22. Disconnected from Server I-14 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 304 I-3 LAN Interface Protocols 4. On a successful connection, the [Disconnect] button is shown and the connected LED flashes green. The status bar will show the IP Address of the connected unit. Figure I-23. Connected MT8860C Operation Manual PN: 13000-00258 Rev. M I-15...
  • Page 305 5. Remote programming commands can be sent to the instrument by typing the command into the drop-down box and clicking the Send button. Transmitted commands are retained within the drop-down entry field. Figure I-24. Remote Commands I-16 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 306 Appendix I — Remote Operation Using LAN I-3 LAN Interface Protocols 6. Multiple commands may be entered separated by a semi-colon (;). Figure I-25. Multiple Commands MT8860C Operation Manual PN: 13000-00258 Rev. M I-17...
  • Page 307 I-3 LAN Interface Protocols Appendix I — Remote Operation Using LAN 7. Click [Disconnect] to close the Socket LAN session. Figure I-26. Disconnected from Server I-18 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 308 Telnet provides a means of communicating with MT8860C over the LAN. The Telnet client run on a LAN connected computer, creates a login session on the MT8860C. A connection, established between computer and MT8860C opens a Telnet window with a command line prompt.
  • Page 309 Appendix I — Remote Operation Using LAN 3. At the MT8860 > prompt, enter GPIB commands (e.g. *idn?). Figure I-29. GPIB String 4. The response string is returned. Figure I-30. Response String I-20 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 310 Appendix I — Remote Operation Using LAN I-3 LAN Interface Protocols 5. Type exit at the MT8860 > prompt to end the Telnet session. Figure I-31. Exit to End Session MT8860C Operation Manual PN: 13000-00258 Rev. M I-21...
  • Page 311 Microsoft provides an FTP client that can be run from a Command Prompt window. However, due to the different file formats used by MT8860C, the use of this is not Note advised for the firmware upgrade operation. If you wish to use this method please contact wlan.support@anritsu.com for further details.
  • Page 312 I-3 LAN Interface Protocols 3. The MT8860C bootload folder is now accessible. Figure I-34. Bootload Folder 4. Files can now be copied from / to the MT8860C bootload folder. 5. Exit the window to close the session. FileZilla Client The FileZilla Client is a free, Open Source FTP client for Windows. It supports FTR, SFTP, and FTPS (FTP over SSL/TLS).
  • Page 313 • Password: anritsu Figure I-36. Enter Host, Username, and Password 3. Click [Quickconnect]. Figure I-37. Quickconnect 4. Files can now be copied from / to the MT8860C bootload folder using a simple drag-and- drop operation. I-24 PN: 13000-00258 Rev. M...
  • Page 314 Chapter 15 of this manual. I-4 Fault Finding Follow the steps below if experiencing problems with the LAN connection on the MT8860C. • Verify that the rear panel LAN connector green LED is flashing. • Check the LAN configuration, making sure that the correct cable type has been used.
  • Page 315 4. At the command prompt, type exit to close the MS-DOS command window. Obtaining the LAN IP Address of the MT8860C If the LAN DHCP mode of the MT8860C has been set to MANUAL (static) and the IP address modified from the default setting (192.168.168.2), a LAN connection to the instrument shall not be possible unless the IP address value is known.
  • Page 316 2. Connect a PC monitor to connector ‘H’ located on the rear panel of MT8860C. 3. Connect a keyboard to the PS2 connector (‘G’) located on the rear panel of MT8860C 4. Connect a mouse to the PS2 connector (‘I’) located on the rear panel of MT8860C.
  • Page 317 I-4 Fault Finding Appendix I — Remote Operation Using LAN 6. When the MT8860C has finished booting up (indicated by ‘On’ LED turned fully on, and the ‘Controller Activity’ LED turned off), the following desktop displays on the PC monitor.
  • Page 318 Figure I-44. MT8860C Rear Panel Connectors 4. Power-on the MT8860. 5. When the MT8860C has finished booting up (indicated by ‘On’ LED turned fully on, and the ‘Controller Activity’ LED turned off), the MT8860C IP configuration is set to the default values shown above.
  • Page 319 Before the MT8860C LAN configuration can be modified, a LAN connection must be established between a PC and MT8860C. To enable this, the IP address of the PC must be in the same subnet as the address of the MT8860C, but not use the same IP address. For example, if the IP address of the MT8860C is 192.168.168.2, the IP address of the PC must be...
  • Page 320 Appendix I — Remote Operation Using LAN I-4 Fault Finding 11. In the “Remote Connection - LAN” frame, enter the IP address of MT8860C and click [Connect]. LANLook should indicate that a remote connection has been established. Figure I-46. MT8860C Remote Tab MT8860C Operation Manual PN: 13000-00258 Rev.
  • Page 321 I-4 Fault Finding Appendix I — Remote Operation Using LAN 12. Click [System Settings] tab. Figure I-47. System Settings Tab I-32 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 322 MT8860C. 17. Power-on the MT8860C. 18. When the MT8860C has finished booting up (indicated by ‘On’ LED turned fully on, and the ‘Controller Activity’ LED turned off), open LANLook. 19. In the “Remote Connection (LAN)” frame, enter the IP address of MT8860C and click [Connect].
  • Page 323 I-4 Fault Finding Appendix I — Remote Operation Using LAN I-34 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 324 488.2 protocol using the NI (National Instruments) gpib-32.dll functionality. VISA communication via LAN is also supported but is not detailed in this appendix. Consult the MT8860C Remote Programming Manual for details. Using LANLook with an Agilent GPIB interface and VISA is straightforward because the VISA protocol implementation is standardized.
  • Page 325 Appendix J — Using LANLook with Agilent GPIB Controllers We are using an 82357B USB/GPIB Interface Converter, and can see that an MT8860C with a GPIB address of 25 is connected to it. The pane on the right shows the configuration settings.
  • Page 326 LANLook has identified the Agilent software components and has enabled the three remote interfaces, GPIB (488.2), GPIB (VISA), and LAN (VISA). Note that the LAN (VISA) interface functions only if a suitable network connection is available on the PC. Refer to the MT8860C Remote Programming Manual for details.
  • Page 327 J-1 Overview Appendix J — Using LANLook with Agilent GPIB Controllers PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 328 DQPSK modulation. A 100 kHz resolution bandwidth is to be used by the measuring receiver. The MT8860C performs the carrier suppression measurement by comparing the peak of the frequency response with the channel center frequency. The data pattern is not significant.
  • Page 329 Direct Mode with the DUT configured using control software supplied by the chipset vendor. As part of the EVM measurement process, the MT8860C includes an IQ offset measurement that returns the actual carrier feedthrough normalized to the mean power at the symbol timings.
  • Page 330 Bracket L-1 Fitting Procedure A bracket is supplied to stabilize the MN8861A when used on an MT8860C in a test rack. The stabilizing bracket is not required when the MT8860C is used on a bench top. The procedure below explains how to attach the stabilizing bracket.
  • Page 331 L-1 Fitting Procedure Appendix L — MN8861A Stabilizing Bracket PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 332 GPIB address - changing ... . 15-7 Ad-Hoc (MT8860C joins) ... . . 6-9 GPIB bootloader ....17-1 adjacent channel rejection .
  • Page 333 LANLook ..15-15 unpacking MT8860C ....2-1 remote operation ..5-1, I-1, J-1, K-1, L-1 upgrading firmware Ethernet .
  • Page 334 WLAN reference input ....14-1 Windows firewall settings ... H-1 MT8860C Operation Manual PN: 13000-00258 Rev. M...
  • Page 335 Index-4 PN: 13000-00258 Rev. M MT8860C Operation Manual...
  • Page 337 Anritsu Company 490 Jarvis Drive Anritsu prints on recycled paper with vegetable soybean oil ink. Morgan Hill, CA 95037-2809 http://www.anritsu.com...

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