Keysight Technologies E6960A 1000Base-T1 User Manual And Method Of Implementation
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Keysight Technologies E6960A 1000Base-T1 User Manual And Method Of Implementation

Keysight Technologies E6960A 1000Base-T1 User Manual And Method Of Implementation

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Keysight E6960A
1000Base-T1 Transmitter
Compliance Application
User Guide and
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  • Page 1 Keysight E6960A 1000Base-T1 Transmitter Compliance Application User Guide and Method of Implementation...
  • Page 2 DOCUMENT IS PROVIDED “AS IS,” sition Regulation (“FAR”) 2.101. Pursu- AND IS SUBJECT TO BEING © Keysight Technologies 2017 - 2019 ant to FAR 12.212 and 27.405-3 and CHANGED, WITHOUT NOTICE, IN No part of this manual may be repro- Department of Defense FAR Supple- FUTURE EDITIONS.

  • Page 3: Table Of Contents

    Table of Contents Overview Introduction ..........10 Installing the Compliance Test Solution Software .
  • Page 4 and Transmitter Peak Differential Output Tests ....36 Test Setup ..........36 Specification References .

  • Page 5: Keysight E6960A User Guide And Method Of Implementation

    Launching the E6960A Compliance Test Application Figure 1-5 E6960A 1000Base-T1 Compliance Test Application Main Window ........19...

  • Page 6: Keysight E6960A User Guide And Method Of Implementation

    Figure C-4 ENA Calibration Setup (ECal Module) ... . . 61 Figure D-1 Keysight’s E6960-66600 Frequency Divider Board . . 64 Figure D-2 Check the Use 10MHz Ref Clock on Main Application Window .
  • Page 7 List of Tables Table 1-1 Test Modes ........10 Table 1-2 Tabs Menu functions .

  • Page 8: Keysight E6960A User Guide And Method Of Implementation

    THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight E6960A User Guide and Method of Implementation...
  • Page 9 Keysight E6960A 1000Base-T1 Transmit Compliance Solution User Guide and Method of Implementation Overview Introduction Preparing to Take Measurements Starting the Automotive Ethernet Compliance Test Solution Software Test Mode 1. TX_TCLK125 Frequency and Transmit Jitter Tests Test Mode 2. Transmit Clock Frequency (MASTER) and MDI Output Jitter (MASTER) Tests Test Mode 4.

  • Page 10: Overview

    Transmitter distortion test Normal Operation in Idle Mode. Power Spectral Density (PSD) mask and power level test. Transmitter Droop Test This E6960A User Guide is written as a guide to using the E6960A 1000Base-T1 NOTE TX Compliance Application software. Using the Keysight E6960A 1000Base-T1 Compliance application software along with an N5395C Ethernet Test Fixture greatly simplifies compliance testing.

  • Page 11: Table

    Overview – Lets you identify the device being tested and its configuration. – Shows you how to make oscilloscope connections to the device under test. – Automatically checks for proper oscilloscope configuration. – Automatically sets up the oscilloscope for each test. –...

  • Page 12: Installing The Compliance Test Solution Software

    Overview Installing the Compliance Test Solution Software 1 Make sure you have the minimum version of Infiniium oscilloscope software (see the software release notes) by choosing Help > About Infiniium... from the main menu. 2 To obtain the E6960A Compliance Application software, go to Keysight website: http://www.keysight.com/find/E6960A.

  • Page 13: Preparing To Take Measurements

    Overview Preparing to Take Measurements Before running the E6960A automated compliance tests, you should calibrate the oscilloscope and probe. After calibrating the oscilloscope and probe, you are ready to start the Compliance Test Application and perform the measurements. Calibrate the Oscilloscope For information on performing the internal diagnostic and calibration cycle for your Keysight Infiniium oscilloscope, refer to the "User Calibration"...

  • Page 14: General Test Setup

    Overview General Test Setup Test Modes 1, 2, 5, and 6 require only the Infiniium oscilloscope and the device to be tested (Device Under Test or DUT). The test setup is described below. Differential Signal supplied to the Oscilloscope can be achieved either by using Two Oscilloscope Channels or a Single Differential Probe.

  • Page 15: Figure 1-1 Connection To The Oscilloscope Using A Pair Of Sma Cables

    Overview Two Oscilloscope Channels Connection to Oscilloscope Two SMA cables are needed to directly connect the output of the transmitter to the oscilloscope. The specific oscilloscope channel used can be selected in the Configure tab of the application. An optional TX_TCLK may be supplied to the oscilloscope to run the tests. 100Ω...

  • Page 16: Figure 1-2 Connection To The Oscilloscope Using A Differential Probe

    Overview Single Differential Probe Connection to Oscilloscope A differential probe is used to connect the output of the transmitter to the oscilloscope. The specific oscilloscope channel used can be selected in the Configure tab of the application. An optional TX_TCLK may be supplied to the oscilloscope to run the tests. Transmitter 100Ω...

  • Page 17: Figure 1-3 General Test Setup Using The N5395C Evaluation Board

    Overview Connection Using the N5395C Ethernet Transmitter Test Fixture Alternately, you can use Section 1 of the N5395C Ethernet 10/100/1G Transmitter Electrical Test Fixture to make connections to the Transmitter under test. The SMA connections shown are for wire pair A (DA+ and DA–). This connection is only valid if the DUT has an RJ45 connector.

  • Page 18: Starting The Automotive Ethernet Compliance Test Solution Software

    1 Ensure that the 1000Base-T1 Device Under Test (DUT) transmitter is operating and set to desired test modes. 2 To start the Compliance Test Application from the Infiniium oscilloscope's main menu, select Analyze > Automated Test Apps > E6960A 1000Base-T1 Test App. Figure 1-4...

  • Page 19: Figure 1-5 E6960A 1000Base-T1 Compliance Test Application Main Window

    Refer to Appendix B “Configure External Instruments” on page 51 Figure 1-5 above shows the E6960A 1000Base-T1 Compliance Test Application main window. 4 The Compliance Application software automatically sets frequency, etc. of the external instruments (oscilloscope, ENA, generators, etc.) if they are properly configured.

  • Page 20: Figure 1-6 Select Tests Menu With All Tests Selected

    Displays test limits, test description, and IEEE specification reference for the selected test. Figure 1-6 Select Tests Menu with all tests selected Figure 1-6 above shows all the tests that are available in E6960A 1000Base-T1 Compliance Test Application. Keysight E6960A User Guide and Method of Implementation...

  • Page 21: Tabs Menu Functions

    Overview Table 1-2 Tabs Menu functions Description Set Up Lets you identify and set up the test environment. Lets you select the tests you want to run. After tests are run, status indicators show which tests have Select Tests passed, failed, or have not run. Lets you configure test parameters (for example, oscilloscope channels used in test, number of Configure averages, etc.).

  • Page 22: Figure 1-7 Configure Tab For Test Mode

    Overview The Configure Tab allows you to select different oscilloscope channels and measurement attributes. For example, the signal input can be changed from a differential probe to two SMA cables. Figure 1-7 Configure Tab for Test Mode 1 Figure 1-7 above shows the figure tab that allows you to select different oscilloscope channels and measurement attributes.

  • Page 23: Figure 1-8 Connect Tab For Test Mode

    Check the, “I have completed these instructions” box before clicking the Run Tests button. Figure 1-8 Connect Tab for Test Mode 1 Figure 1-8 above shows the connect tab of the E6960A 1000Base-T1 Compliance Test Application. Keysight E6960A User Guide and Method of Implementation...

  • Page 24: Top Menu Bar

    Overview Top Menu Bar The top menu bar of the compliance application offers several features: Top Menu Bar Tabs Top Menu Bar icons from left to right: Start a new project: Closes existing project and opens a new project. Open an existing project: If you saved a previous project, this icon allows you to open it.

  • Page 25: Test Mode 1. Tx_Tclk125 Frequency And Transmit Jitter Tests

    Overview Test Mode 1. TX_TCLK125 Frequency and Transmit Jitter Tests Test Setup This test may be run using either two oscilloscope channels or a single differential probe from the transmitter (MDI). Refer to “General Test Setup” on page 14 for connection details.

  • Page 26: Transmit Clock Jitter (Master/Slave)

    Overview Transmit Clock Jitter (MASTER/SLAVE) Test Mode 1 enables testing of timing jitter on MASTER and SLAVE transmitters. MASTER and SLAVE transmitters are connected over a link segment. The transmitter timing jitter is measured by capturing the TX_TCLK125 waveforms in both MASTER and SLAVE configurations.

  • Page 27: Test Mode 2. Transmit Clock Frequency (Master) And Mdi Output Jitter (Master) Tests

    Overview Test Mode 2. Transmit Clock Frequency (MASTER) and MDI Output Jitter (MASTER) Tests Test Setup This test may be run using either two oscilloscope channels or a single differential probe from the transmitter (MDI). Refer to “General Test Setup” on page 14 for connection details.
  • Page 28 Overview Reference [3] specifies that when in test mode 2, the peak-to-peak value of the MDI output jitter, relative to an unjittered reference shall be less than 50 ps. This test measures the data time interval error of the test mode 2 signal at the MDI. The ideal reference data rate is selected automatically by the oscilloscope and compared to the original signal to determine the data time interval error.

  • Page 29: Test Mode 4. Transmitter Distortion And Mdi Return Loss

    Overview Test Mode 4. Transmitter Distortion and MDI Return Loss Test Setup Sections 1 and 11 of the N5395C Ethernet Test Fixture are used in this test. A disturbing signal source is required to test for compliance. There is an option to test without a disturbing signal source, but the test result is not applicable for compliance.

  • Page 30: Using The Optional E6960A Frequency Divider Board

    Overview Using the Optional E6960A Frequency Divider Board If you want to use the optional E6960-66600 Frequency Divider Board to provide a stable 10 MHz reference clock, refer to Appendix D “Using the E6960-66600 Frequency Divider Board” on page 63 for detailed information. Specification References [1] 1000Base-T1 IEEE Std 802.3bp-2016, Section 97.5.3.2.

  • Page 31: Transmitter Distortion Enhance Clock Recovery Algorithm

    Overview Transmitter Distortion Enhance Clock Recovery Algorithm Keysight employs an enhanced clock recovery algorithm when the TX_TCLK is not available. The algorithm conditions the signal to the nominal bitrate. This is enabled by default when the Use 10MHz Ref Clock checkbox is disabled. When the Use 10MHz Ref Clock checkbox is enabled, the E6960-66600 Frequency Divider board as well as access to TX_TCLK to is required for synchronization.

  • Page 32: Mdi Return Loss Test

    Overview MDI Return Loss Test This test is run with an external vector network analyzer. However, a VNA exported data file in the Touchstone or CITI format can also be used in place of the external vector network analyzer. The external vector network analyzer will need to be manually calibrated prior to use.

  • Page 33: Test Setup

    Overview Test Setup Single Ended Connection Setup LAN/USB Connection E5071C ENA 1250-1250 DSOS254A Infiniium N-type(M) Oscilloscope to SMA Adapter N5395A Ethernet Transmitter Test Fixture Twisted Pair to SMA MDI DUT Twisted Pair Converter Cable Figure 1-10 Single Ended Connection Setup for MDI Return Loss Test Keysight E6960A User Guide and Method of Implementation...

  • Page 34: Figure 1-11 Differential Connection Setup For Mdi Return Loss Test

    Overview Differential Connection Setup Figure 1-11 Differential Connection Setup for MDI Return Loss Test Keysight E6960A User Guide and Method of Implementation...

  • Page 35: Mdi Return Loss Test Information

    Overview MDI Return Loss Test Information Reference [2] specifies that the differential impedance at the MDI for each transmit/receive channel shall be such that any reflection (due to differential signals incident upon the MDI with a test port having a differential impedance of 100 Ω) is attenuated relative to the incident signal as per the equation below.

  • Page 36: Test Mode 5. Transmitter Power Spectral Density, Transmitter Power Level

    Overview Test Mode 5. Transmitter Power Spectral Density, Transmitter Power Level and Transmitter Peak Differential Output Tests Test Setup The Power Spectral Density (PSD) Test can be run using either a spectrum analyzer or an oscilloscope. When using the oscilloscope, refer to “General Test Setup”...

  • Page 37: Specification References

    Overview Use the software supplied with your transmitter PHY to control the Device Under NOTE Test. Specification References [1] 1000Base-T1 IEEE Std 802.3bp-2016, Section 97.5.3.4. [2] 1000Base-T1 IEEE Std 802.3bp-2016, Section 97.5.3.5. Keysight E6960A User Guide and Method of Implementation...

  • Page 38: Transmitter Power Spectral Density (Psd)

    Overview Transmitter Power Spectral Density (PSD) Reference [1] specifies that in Test Mode 5, the power spectral density (PSD) of the transmitter, shall be between the upper and lower masks specified by the equations below. ----------- - < ≤ – f 100 UpperPSD f ( ) ----------- -...

  • Page 39: Transmitter Power Level

    Overview Transmitter Power Level Reference [1] specifies that in Test Mode 5, the transmit power shall be less than 5 dBm. Transmitter Peak Differential Output Reference [2] specifies that in Test Mode 5, when measured with 100 Ω termination, the transmit differential signal at MDI shall be less than 1.30 Volt peak-to-peak.

  • Page 40: Test Mode 6. Output Droop Tests

    Overview Test Mode 6. Output Droop Tests Test Setup This test may be run using either two oscilloscope channels or a single differential probe from the transmitter (MDI). Refer to “General Test Setup” on page 14 for connection details. Use the software supplied with your transmitter PHY to control the Device Under NOTE Test.

  • Page 41: Transmitter Output Droop Negative Test Information

    Overview Transmitter Output Droop Negative Test Information This test measures the negative output droop of the transmitter. Reference [1] specifies the negative output droop of a compliant PHY. The negative droop measured with respect to an initial value at 4 ns after the zero crossing and a final value of 16 ns after the zero crossing, shall be less than 10%.

  • Page 42: Viewing The Test Report

    Overview Viewing the Test Report After running any or all of the five Compliance tests, the Results tab shows which tests passed and details about the individual tests. For test result details, select any one of the tests from the top pane; the test details are shown below. In Figure 1-13 below, the jitter test is selected and the test results, with waveform, is shown below.

  • Page 43: Figure 1-14 Top Portion Of A Typical Html Report

    Overview Figure 1-14 Top Portion of a Typical HTML Report Keysight E6960A User Guide and Method of Implementation...

  • Page 44: Reference Documents

    E6960A Automotive Ethernet TX Compliance Solution Web Page: www.keysight.com/find/E6960A Other Keysight Automotive Ethernet Applications and Software – E6960A 1000Base-T1 TX Compliance Application: www.keysight.com/find/E6960A – E6961A Automotive Ethernet TX Compliance Solution: www.keysight.com/find/E6961A – E6962A Automotive Ethernet RX Compliance Solution –...

  • Page 45: Setting Up The N5395C Ethernet Transmitter Test Fixture

    Keysight E6960A 1000Base-T1 Transmit Compliance Solution User Guide and Method of Implementation Setting Up the N5395C Ethernet Transmitter Test Fixture Introduction...

  • Page 46: Introduction

    Setting Up the N5395C Ethernet Transmitter Test Fixture Introduction Keysight’s N5395C Ethernet 10/100/1G Transmitter Electrical Test Fixture includes a main test fixture board (N5392-66402), a short RJ-45 interconnect cable (N5392-61601), and a small Return Loss impedance calibration board (N5392-66401). Keysight’s N5395C Ethernet Test Fixture is recommended for the Compliance Test Mode 4.

  • Page 47: Figure A-1 N5395C Ethernet Electrical Transmitter Test Fixture

    Setting Up the N5395C Ethernet Transmitter Test Fixture Figure A-1 N5395C Ethernet Electrical Transmitter Test Fixture Figure A-2 Return Loss Impedance Calibration Board Keysight E6960A User Guide and Method of Implementation...

  • Page 48: Jumper Settings

    Setting Up the N5395C Ethernet Transmitter Test Fixture Jumper Settings Figure A-4 shows the jumper position for the Ethernet Test Fixture Section 11 applicable for E6960A Compliance Test. Section 11 Jumpers. See Figure A-4 settings. Figure A-3 Section 11 on the Ethernet Test Fixture. Keysight E6960A User Guide and Method of Implementation...

  • Page 49: Figure A-4 Jumper Location For Ethernet Test Fixture

    Setting Up the N5395C Ethernet Transmitter Test Fixture Figure A-4 Jumper Location for Ethernet Test Fixture If you need similar jumper cables, please contact your Keysight sales NOTE representative for more details. Keysight E6960A User Guide and Method of Implementation...
  • Page 50 Setting Up the N5395C Ethernet Transmitter Test Fixture THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight E6960A User Guide and Method of Implementation...

  • Page 51: Configure External Instruments

    Keysight E6960A 1000Base-T1 Transmit Compliance Solution User Guide and Method of Implementation Configure External Instruments Introduction...

  • Page 52: Introduction

    Configure External Instruments Introduction For each test, the DSOS254A Infiniium Oscilloscope automatically configures any external instruments (AWG, E5071C ENA, and N9010B EXA Signal Analyzer) as required for the test. In order to do this, however, the oscilloscope must know the SICL address of each instrument.

  • Page 53: Figure B-2 Broadr-Reach Compliance Test Application External Instruments List

    Configure External Instruments Figure B-2 BroadR-Reach Compliance Test Application External Instruments List 2 Select the AWG used in your system. For the E6961A Solution, this would be the Fg81150/60. 3 If you know the SICL address (you can use Keysight IO Libraries Suite Connection Expert utility to obtain the SICL address) enter it in the SICL Address field.
  • Page 54 Configure External Instruments 5 Repeat steps 3, 4, and 5 for the E5071C ENA and the N9010B EXA Spectrum (or Signal) Analyzer. 6 When you are finished, click the Done button to return to the Main Menu. 7 The External Instruments Status indicator turns green to indicate that all external instruments have been properly configured.

  • Page 55: External Instrument Calibration

    Keysight E6960A 1000Base-T1 Transmit Compliance Solution User Guide and Method of Implementation External Instrument Calibration Introduction...

  • Page 56: Introduction

    External Instrument Calibration Introduction All instruments must be calibrated prior to running the Compliance tests. The compliance application software guides you in calibrating the AWG and the ENA. Calibrating the AWG Before running disturbing signal tests, the AWG must be calibrated. Connect the equipment as shown in Figure 1-9 on page 29.

  • Page 57: Figure C-1 Awg Calibration Setup For The Disturbing Signal Source

    External Instrument Calibration Connect BNC to BNC Connect 50Ω SMA cables to AWG Terminations BNC to SMA Cables N5395A Ethernet Transmitter Test Fixture Figure C-1 AWG Calibration Setup for the Disturbing Signal Source Performing the AWG Calibration for the Disturbing Signal Source 1 From the E6960A Compliance Test Application software main menu, click the Calibrate Sources button.

  • Page 58: Figure C-2 E6960A Compliance Test Application Main Menu

    External Instrument Calibration Figure C-2 E6960A Compliance Test Application Main Menu 2 This opens the Calibrate Disturbing Signal dialog box for the selected AWG. 3 With the appropriate AWG Address set and the correct oscilloscope channels selected, click the Calibrate button to start the calibration process. 4 When the software finishes the calibration, click the Done button to return to the Main Menu.

  • Page 59: Calibrating The Ena

    External Instrument Calibration Calibrating the ENA Using the Return Loss Calibration board Before using the ENA, it must be calibrated using the Return Loss Calibration board. See Figure C-3 below for the connection diagram. Calibrate the ENA using the instructions in the ENA’s User’s Guide. Short Cables Short RJ45 cable...
  • Page 60 External Instrument Calibration 1 Connect the Return Loss Calibration board RJ45 connector labeled OPEN to the RJ45 connector on the main test fixture board using a short straight-through UTP cable. 2 Connect one end of two short SMA-to-SMA cables to the SMA test points for the pair you are testing (A, B, C, or D) on Section 1 of the test fixture.

  • Page 61: Figure C-4 Ena Calibration Setup (Ecal Module)

    External Instrument Calibration Using ECal Module Before using the ENA, it must be calibrated using the N4431B ECal Kit. See Figure C-4 below for the connection diagram. Calibrate the ENA using the instructions in the ENA’s user guide. Figure C-4 ENA Calibration Setup (ECal Module) 1 Connect the USB port on the ECal module with the USB port on the E5071C via a USB cable.
  • Page 62 External Instrument Calibration 5 Click ECal. 6 Click 2 Port ECal. – When using a 2-port E5071C, pressing this key performs a 2-port ECal. – When using a 3-port or 4-port E5071C, click one of the softkeys to start a full 2-port calibration.

  • Page 63: Using The E6960-66600 Frequency Divider Board

    Keysight E6960A 1000Base-T1 Transmit Compliance Solution User Guide and Method of Implementation Using the E6960-66600 Frequency Divider Board Introduction...

  • Page 64: Introduction

    Using the E6960-66600 Frequency Divider Board Introduction Keysight’s E6960-66600 Frequency Divider Board produces two identical clock signal outputs (10 MHz) that are phase locked to the input clock. This Frequency Divider Board is recommended for Compliance Test Mode 4, Transmitter Distortion Test.

  • Page 65: Static-Safe Handling Procedures

    Using the E6960-66600 Frequency Divider Board Static-safe Handling Procedures Electrostatic discharge (ESD) can damage or destroy electronic components. Use a static-safe work station to perform at work on electronic assemblies. This figure shows a static-safe work station using two types of ESD protection: –...

  • Page 66: Figure D-2 Check The Use 10Mhz Ref Clock On Main Application

    Using the E6960-66600 Frequency Divider Board To use the divider board, check the Use 10MHz Ref Clock on the E6960A Main Application Window Figure D-2 Check the Use 10MHz Ref Clock on Main Application Window Keysight E6960A User Guide and Method of Implementation...

  • Page 67: Frequency Divider Board Test Setup

    Using the E6960-66600 Frequency Divider Board Configure the test setup as shown below. 10MHz Ref in to oscilloscope and AWG Master BNC to BNC cables LAN or USB cable BNC to BNC Cables BNC to Frequency Cables Divider Board TX_CLK SMA to SMA Cables cable...

  • Page 68: Connector Description

    Using the E6960-66600 Frequency Divider Board 6 Select CH1 as input by switching switch A6 to OFF. 7 Select Targeted 25 MHz input by switching switch B2 to ON. 8 Power on the board by connecting a power source to the USB connector or to the DC power jack.

  • Page 69: Dip Switch Description

    Using the E6960-66600 Frequency Divider Board J300 & J302 This jumper allows user to probe the channel 1 and channel 2 inputs respectively J401 This jumper shorts both outputs together. J402 Parking location for unused jumpers. DIP Switch Description Switch A Switch A sets the Fixture operating mode.

  • Page 70: Led Description

    Using the E6960-66600 Frequency Divider Board Switch B Switch B sets the frequency divider to the relevant setting. Table D-2 Switch B function states Divider Comment To obtain 10 MHz output: Not valid (def) Free Run Mode Div 1 Targeted 10MHz input clock Div 5/2 Targeted 25MHz input clock Div 20/3...

  • Page 71: Led A Indicators

    Using the E6960-66600 Frequency Divider Board LED A Table D-4 LED A indicators Green Input signal locked (Normal condition) Lost of Lock Flash 1 Hz Lost of Signal Flash 1 Hz Lost of 48MHz reference LED B Table D-5 LED B indicators Green Valid switch B configuration (Normal condition) Invalid switch B configuration...
  • Page 72 Using the E6960-66600 Frequency Divider Board THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight E6960A User Guide and Method of Implementation...
  • Page 73 This information is subject to change without notice. Always refer to the English version at the Keysight website for the latest revision. © Keysight Technologies 2017 - 2019 Edition 3.0, March 2019 Printed in Malaysia www.keysight.com...

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