Keysight E6961A User Manual And Method Of Implementation
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Keysight E6961A User Manual And Method Of Implementation

Automotive ethernet transmit compliance solution
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Keysight E6961A Automotive
Ethernet Transmit
Compliance Solution
User Guide and
Method of
Implementation

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Summary of Contents for Keysight E6961A

  • Page 1 Keysight E6961A Automotive Ethernet Transmit Compliance Solution User Guide and Method of Implementation...
  • Page 2 Conformity. could result in personal injury or death. 227.7103-5 (c), as applicable in any Do not proceed beyond a WARNING technical data. notice until the indicated conditions are fully understood and met. Keysight E6961A User Guide and Method of Implementation...

  • Page 3: Table Of Contents

    .....38 Transmitter Distortion Enhance Clock Recovery Algorithm ..38 Keysight E6961A User Guide and Method of Implementation...
  • Page 4 ........73 Keysight E6961A User Guide and Method of Implementation...
  • Page 5 ........40 Keysight E6961A User Guide and Method of Implementation...
  • Page 6 ........70 Figure D-3 Test Setup for 10 MHz Frequency Reference ..71 Keysight E6961A User Guide and Method of Implementation...
  • Page 7 LED B Indicators ......75 Keysight E6961A User Guide and Method of Implementation...
  • Page 8 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight E6961A User Guide and Method of Implementation...

  • Page 9: Overview

    Keysight E6961A Automotive Ethernet Transmit Compliance Solution User Guide and Method of Implementation Overview Introduction Installing the Compliance Test Solution Software Preparing to Take Measurements Starting the Automotive Ethernet Compliance Test Solution Software Test Mode 1. Output Droop Tests Test Mode 2. MASTER Clock Frequency and Jitter Tests Test Mode 3.

  • Page 10: Introduction

    Transmit jitter test in SLAVE mode Transmitter distortion test Power Spectral Density (PSD) mask and test. This E6961A User Guide is written as a guide to using the N6467B BroadR-Reach NOTE TX Compliance Application software. For information on the N8847A...

  • Page 11: Installing The Compliance Test Solution Software

    3 Click the Trials & Licenses tab. 4 Click the Details & Download button. 5 Read and verify the Prerequisites and installation information. Follow the instructions to download and install the application software. Click the red Download button. Keysight E6961A User Guide and Method of Implementation...

  • Page 12: Installing The License Key

    Overview Installing the License Key 1 Request a license code from Keysight by following the instructions on the Entitlement Certificate. You will need the oscilloscope's “Option ID Number”, which you can find in the Help > About Infiniium... dialog box.

  • Page 13: Preparing To Take Measurements

    Calibrate the Oscilloscope For information on performing the internal diagnostic and calibration cycle for your Keysight Infiniium oscilloscope, refer to the "User Calibration" topic in your oscilloscope's online help. If the ambient temperature changes more than 5 °C from the calibration NOTE temperature, internal calibration should be performed again.

  • Page 14: 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. Keysight E6961A User Guide and Method of Implementation...

  • Page 15: Single Differential Probe Connection To 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. Figure 1-2 Connection to the Oscilloscope using a Differential Probe Keysight E6961A User Guide and Method of Implementation...

  • Page 16: Figure 1-3 General Test Setup Using The N5395C Evaluation Board

    SMA connectors. In the event the DUT does not have a RJ45 connector, user will need to replace Section 1 with any adapter that converts the differential automotive pair to SMA. Figure 1-3 General Test Setup using the N5395C Evaluation Board Keysight E6961A User Guide and Method of Implementation...
  • Page 17 Overview For all tests, use the software supplied with your transmitter PHY to control the NOTE Device Under Test. Keysight E6961A User Guide and Method of Implementation...

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

    2 To start the Compliance Test Application from the Infiniium oscilloscope's main menu, select Analyze > Automated Test Apps > N6467A/N6467B BroadR-Reach Test App. Figure 1-4 Launching the BroadR-Reach Compliance Test Application Keysight E6961A User Guide and Method of Implementation...
  • Page 19 “Appendix D: Using the E6960-66600 Frequency Divider Board” on page 67. The task flow pane, and the tabs in the main pane, show the steps you take in running the automated tests: Keysight E6961A User Guide and Method of Implementation...

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

    Overview Displays test limits, test description, and IEEE specification reference for the selected test. Figure 1-6 Select Tests Menu with all Tests Selected Keysight E6961A User Guide and Method of Implementation...
  • Page 21 Contains more detailed information about the tests that have been run. You can change the thresholds Results at which marginal or critical warnings appear. HTML Report Report Shows a compliance test report that can be printed. See “Viewing the Test Report” on page 45 Keysight E6961A User Guide and Method of Implementation...

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

    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 Keysight E6961A User Guide and Method of Implementation...

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

    When you make multiple tests where the connections must be changed, the software prompts you with appropriate connection diagrams. Check the, “I have completed these instructions” box before clicking the Run Tests button. Figure 1-8 Connect Tab for Test Mode 1 Keysight E6961A User Guide and Method of Implementation...

  • Page 24: Top Menu Bar

    View results: Opens the HTML Report window. Same as the Html Report tab. Tabs The tabs across the top correspond to the Task Flow icons on the left side of the main display. Keysight E6961A User Guide and Method of Implementation...

  • Page 25: Test Mode 1. Output Droop Tests

    500 ns after the peak. The Droop is calculated as: Droop = 100 X (Vd/Vpk)% Where: – Vd is the magnitude of the droop. – Vpk is the initial peak after the zero crossing. Keysight E6961A User Guide and Method of Implementation...

  • Page 26: Transmitter Output Droop Negative Test Information

    The application then measures the voltage 500 ns after the peak. The Droop is calculated as: Droop = 100 X (Vd/Vpk) % Where: – Vd is the magnitude of the droop. – Vpk is the initial peak after the zero crossing. Keysight E6961A User Guide and Method of Implementation...

  • Page 27: Figure 1-11 Typical Negative Droop Test Waveform (Using A Pair Of Sma Cables)

    Overview Typical Waveform Figure 1-11 Typical Negative Droop Test Waveform (using a pair of SMA cables) Keysight E6961A User Guide and Method of Implementation...

  • Page 28: Test Mode 2. Master Clock Frequency And Jitter Tests

    MASTER timing mode. The measured data rate of the Test Mode 2 signal is thus equal to the MASTER Transmit Clock Frequency of the PHY. Keysight E6961A User Guide and Method of Implementation...

  • Page 29: Figure 1-12 Typical Master Clock Test Waveform (Using A Pair Of Sma Cables)

    Overview Typical Waveform Figure 1-12 Typical MASTER Clock Test Waveform (using a pair of SMA cables) Keysight E6961A User Guide and Method of Implementation...

  • Page 30: Master Txout Jitter Test Information

    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. Typical Waveform Figure 1-13 Typical MASTER TX Out Test Waveform (using a pair of SMA cables) Keysight E6961A User Guide and Method of Implementation...

  • Page 31: Test Mode 3. Slave Transmit Clock Frequency And Jitter Tests

    {+1,-1} repeatedly on the channel. The transmitter shall time the transmitted symbols from a symbol rate clock in the SLAVE timing mode. Alternatively, an external TX_TCLK could be used to measure the frequency. Keysight E6961A User Guide and Method of Implementation...

  • Page 32: Figure 1-14 Typical Tx Test Waveform (Using A Pair Of Sma Cables)

    Overview Typical Waveform Figure 1-14 Typical TX Test Waveform (using a pair of SMA cables) Keysight E6961A User Guide and Method of Implementation...

  • Page 33: Figure 1-15 Typical Tx-Tclk Test Waveform (Using A Pair Of Sma Cables)

    Alternatively, an external TX_TCLK could be used to measure the jitter. Typical Waveform Figure 1-15 Typical TX-TCLK Test Waveform (using a pair of SMA cables) Keysight E6961A User Guide and Method of Implementation...

  • Page 34: Test Mode 4. Transmitter Distortion And Mdi Return Loss Tests

    Number Required Notes Keysight 82357B USB/GPIB interface and one additional GPIB Keysight 33250A cable required. Keysight 33612A LAN Cable required. LAN Cable required. (2- Channel, orderable through E6961A Keysight 81150A Compliance Test Solution Keysight E6961A User Guide and Method of Implementation...

  • Page 35: Figure 1-16 Transmitter Distortion Test Connection Using Two Keysight 33250A Function Generators

    Overview Figure 1-16 Transmitter Distortion Test Connection Using two Keysight 33250A Function Generators Keysight E6961A User Guide and Method of Implementation...

  • Page 36: Figure 1-17 Connection For Transmitter Distortion Test Using Keysight

    Overview Figure 1-17 Connection for Transmitter Distortion Test Using Keysight 33612A Function Generator Keysight E6961A User Guide and Method of Implementation...

  • Page 37: Using The Optional E6961A Frequency Divider Board

    Connection for Transmitter Distortion Test Using Keysight 81150A Function Generator Using the Optional E6961A Frequency Divider Board If you want to use the optional E6961A Frequency Divider Board to provide a stable 10 MHz reference clock, refer to “Appendix D: Using the E6960-66600 Frequency Divider Board”...

  • Page 38: Transmitter Distortion Tests Information

    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.

  • Page 39: Figure 1-19 Typical Distortion Test Waveform (Using A Pair Of Sma Cables)

    Overview Typical Waveform Figure 1-19 Typical Distortion Test Waveform (using a pair of SMA cables) Keysight E6961A User Guide and Method of Implementation...

  • Page 40: Mdi Return Loss Test

    MDI Return Loss Test Run the Management Data Input (MDI) Return Loss test with a vector network analyzer connected externally to the oscilloscope. Test Setup Figure 1-20 Connection Setup for MDI Return Loss test Keysight E6961A User Guide and Method of Implementation...

  • Page 41: Mdi Return Loss Test Information

    PHY is transmitting data or control symbols. Table 1-4 Frequency and Return Loss Frequency Return Loss (dB) 1 - 30 MHz 30 - 66 MHz 20 - 20*log(f/30) Keysight E6961A User Guide and Method of Implementation...

  • Page 42: Test Mode 5. Transmitter Power Spectral Density (Psd) And Transmitter Peak Differential Output Tests

    Fixture as shown in Figure 1-19 on page 39. Figure 1-21 Power Spectral Density Test Using N9010B Signal Analyzer Use the software supplied with your transmitter PHY to control the Device Under NOTE Test. Keysight E6961A User Guide and Method of Implementation...

  • Page 43: Specification References

    The upper and lower limits are piece-wise linear masks connecting points given in the table above. A lower PSD mask is provided to ensure the tolerances. This test could be run using an external spectrum analyzer or the oscilloscope. Keysight E6961A User Guide and Method of Implementation...

  • Page 44: Transmitter Peak Differential Output

    Typical Spectral Density Loss Test Waveform Transmitter Peak Differential Output Reference specifies that in Test Mode 5, when measured with 100 Ω termination, the transmit differential signal at MDI shall be less than 2.2 Volt peak-to-peak. Keysight E6961A User Guide and Method of Implementation...

  • Page 45: Viewing The Test Report

    Figure 1-23 Typical Results Tab Figure 1-24 below shows a portion of a typical HTML Report. Below this segment are waveforms and more test data. Keysight E6961A User Guide and Method of Implementation...

  • Page 46: Figure 1-24 Top Portion Of A Typical Html Report

    Overview Figure 1-24 Top Portion of a Typical HTML Report Keysight E6961A User Guide and Method of Implementation...

  • Page 47: Reference Documents

    Reference Documents OPEN Alliance / BroadR-Reach Specifications: www.opensig.org www.ieee802.org Keysight’s Automotive Ethernet Test Solutions Web Page: www.keysight.com/find/BroadR-Reach E6961A Automotive Ethernet TX Compliance Solution Web Page: www.keysight.com/find/E6961A Other Keysight Automotive Ethernet Applications and Software – E6960A 1000Base-T1 TX Compliance Application: www.keysight.com/find/ E6960A –...
  • Page 48 Overview THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight E6961A User Guide and Method of Implementation...

  • Page 49: Setting Up The N5395C Ethernet Transmitter Test Fixture

    Keysight E6961A Automotive Ethernet Transmit Compliance Solution User Guide and Method of Implementation Setting Up the N5395C Ethernet Transmitter Test Fixture Introduction...

  • Page 50: Introduction

    (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. A different, comparable fixture may be used, but is not guaranteed to produce the same result.

  • Page 51: Figure A-1 Return Loss Impedance Calibration Board

    Setting Up the N5395C Ethernet Transmitter Test Fixture Figure A-1 Return Loss Impedance Calibration Board Figure A-2 N5395C Ethernet Electrical Transmitter Test Fixture Keysight E6961A User Guide and Method of Implementation...

  • Page 52: Jumper Settings

    Test Fixture Section 11 applicable for various frequencies. Section 11 Jumpers. See Table A-2 (next page) for settings. Figure A-3 Section 11 on the Ethernet Test Fixture. See Table 2 for Jumper Settings Keysight E6961A User Guide and Method of Implementation...
  • Page 53 Setting Up the N5395C Ethernet Transmitter Test Fixture Table A-2 Jumper Locations for Ethernet Test Fixture (Section 11 on Test Fixture) Filter Bandwidth Jumper Location 25 MHz 35 MHz 102 MHz Keysight E6961A User Guide and Method of Implementation...
  • Page 54 Setting Up the N5395C Ethernet Transmitter Test Fixture THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight E6961A User Guide and Method of Implementation...

  • Page 55: Configure External Instruments

    Keysight E6961A Automotive Ethernet Transmit Compliance Solution User Guide and Method of Implementation Configure External Instruments Introduction...

  • Page 56: Introduction

    Note that the 33250A AWGs require an 82357B USB/GPIB interface. You must configure the Master and Slave 33250A AWGs separately. 1 From the BroadR-Reach Compliance Test Application Set Up tab, click the Configure button. Figure B-1 BroadR-Reach Compliance Test Application Main Menu Keysight E6961A User Guide and Method of Implementation...

  • Page 57: Figure B-2 Broadr-Reach Compliance Test Application External Instruments List

    Figure B-2 BroadR-Reach Compliance Test Application External Instruments List 3 Select the AWG used in your system. For the E6961A Solution, this would be the Fg81150/60. 4 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 58 Configure External Instruments THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight E6961A User Guide and Method of Implementation...

  • Page 59: External Instrument Calibration

    Keysight E6961A Automotive Ethernet Transmit Compliance Solution User Guide and Method of Implementation External Instrument Calibration Introduction...

  • Page 60: Introduction

    Instead of connecting SMA to SMA cables on the N5393C Evaluation Board, NOTE Ω connect 50 Terminators to the two DUT SMA Connectors on the Evaluation Board. This is shown in Figure C-1 below Keysight E6961A User Guide and Method of Implementation...

  • Page 61: Figure C-1 Awg Calibration Setup For The Disturbing Signal Source

    AWG Calibration Setup for the Disturbing Signal Source Performing the AWG Calibration for the Disturbing Signal Source 1 From the BroadR-Reach Compliance Test Application software main menu, click the Calibrate Sources button. Keysight E6961A User Guide and Method of Implementation...

  • Page 62: Calibrating The Ena

    Calibrate button to start the calibration process. 4 When the software finishes the calibration, click the Done button to return to the Main Menu. Refer to the E6961A online help for a more detailed explanation. Calibrating the ENA Before using the ENA, it must be calibrated using the Return Loss Calibration board.

  • Page 63: Figure C-3 Ena Calibration Setup

    Figure C-3 ENA Calibration Setup 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. Keysight E6961A User Guide and Method of Implementation...
  • Page 64 – Set Scale Ref to reference line position 9. 5 5 Run the calibration for the OPEN, SHORT, and LOAD connections. For connectors other than RJ45, a custom calibration kit will need to be developed. Keysight E6961A User Guide and Method of Implementation...

  • Page 65: Using The E6960-66600 Frequency Divider Board

    Keysight E6961A Automotive Ethernet Transmit Compliance Solution User Guide and Method of Implementation Using the E6960-66600 Frequency Divider Board Introduction...

  • Page 66: 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 67: Static-Safe Handling Procedures

    Observe appropriate ESD precautions before connecting and disconnecting cables and changing the positions of jumpers ans switches. To use the divider board, check the Use 10MHz Ref Clock on the BroadR-Reach Compliance Test Application Main Window. Keysight E6961A User Guide and Method of Implementation...

  • Page 68: Figure D-2 Check The Use 10Mhz Ref Clock On Main Application

    Using the E6960-66600 Frequency Divider Board Figure D-2 Check the Use 10MHz Ref Clock on Main Application Window Configure the test setup as shown below. Keysight E6961A User Guide and Method of Implementation...

  • Page 69: Frequency Divider Board Test Setup

    5 Select Frequency Tracking mode by switching switch A2 to OFF. 6 Select CH1 as input by switching switch A6 to OFF. 7 Select Targeted 25 MHz input by switching switch B2 to ON. Keysight E6961A User Guide and Method of Implementation...

  • Page 70: Connector Description

    Provides user the option to modify the test fixture circuitry. J100 This jumper controls the output signal amplitude: 4.2Vpp: Connect pin 1 and pin 2 3.3Vpp: Connect pin 2 and pin 3 3.0Vpp: Connect pin 3 and pin 4 Keysight E6961A User Guide and Method of Implementation...

  • Page 71: Dip Switch Description

    Change made to any of the switches are ignored Frequency Tracking Mode Output frequency track to input frequency Lock Frequency Mode Output clock is phase lock to input clock Select CH1 as input Select CH2 as input Keysight E6961A User Guide and Method of Implementation...
  • Page 72 Note: Other combinations are not valid. if no valid switch setting is detected, LED will flash indicating invalid switch B configuration. After reset, if no valid position is detected, the board uses the “Free Run Mode” which generates an accurate 10 MHz signal. Keysight E6961A User Guide and Method of Implementation...

  • Page 73: Led Description

    LED B Indicators Green Valid switch B configuration (Normal condition) Invalid switch B configuration Flash 1 Hz Missing input signal/ input signal out of range/ Warning. See LED A for list of warning Keysight E6961A User Guide and Method of Implementation...
  • Page 74 Using the E6960-66600 Frequency Divider Board THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight E6961A User Guide and Method of Implementation...
  • Page 75 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, January 2019 Printed in Malaysia *E6961A-90001* E6961A-90001 www.keysight.com...

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