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Overview

40

Keysight E6961A User Guide and Method of Implementation

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

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Summary of Contents for E6961A

Page 1: ...Keysight E6961A Automotive Ethernet Transmit Compliance Solution User Guide and Method of Implementation...

Page 2: ...stomarily provided to the public or 2 Relinquish to or otherwise provide the govern ment rights in excess of these rights customarily provided to the public to use modify reproduce release per form di...

Page 3: ...nces 25 Transmitter Output Droop Positive Test Information 25 Transmitter Output Droop Negative Test Information 26 Test Mode 2 MASTER Clock Frequency and Jitter Tests 28 Test Setup 28 Specification R...

Page 4: ...e Test Report 45 Reference Documents 47 Other Keysight Automotive Ethernet Applications and Software 47 A Setting Up the N5395C Ethernet Transmitter Test Fixture Introduction 50 Jumper Settings 52 B C...

Page 5: ...ical Positive Droop Test Waveform using a pair of SMA cables 27 Figure 1 11 Typical Negative Droop Test Waveform using a pair of SMA cables 28 Figure 1 12 Typical MASTER Clock Test Waveform using a pa...

Page 6: ...cal Transmitter Test Fixture 53 Figure A 3 Section 11 on the Ethernet Test Fixture See Table 2 for Jumper Settings 54 Figure B 1 BroadR Reach Compliance Test Application Main Menu 58 Figure B 2 BroadR...

Page 7: ...e 1 6 List of supported function generators 35 Table 1 7 Supported ENAs for MDI Return Loss Test 41 Table 1 8 Frequency and Return Loss 43 Table 1 9 PSD Test settings 45 Table A 1 List of Compliance T...

Page 8: ...8 Keysight E6961A User Guide and Method of Implementation THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK...

Page 9: ...the Automotive Ethernet Compliance Test Solution Software 18 Test Mode 1 Output Droop Tests 25 Test Mode 2 MASTER Clock Frequency and Jitter Tests 28 Test Mode 3 SLAVE Transmit Clock Frequency and Ji...

Page 10: ...the testing and validating the transmitter waveform transmitter distortion transmitted jitter and transmitter droop The test modes change only the data symbols provided to the transmitter circuitry an...

Page 11: ...o determine the number of trials for averaging in each test Provides detailed information of each test that has been run The result of maximum 64 worst trials can be displayed at any one time Creates...

Page 12: ...r Server License 3 In the Install Option License dialog box enter your license code and click Install License Additional information is required for server based licensing Please refer to your entitle...

Page 13: ...ore the skew calibration Both calibrations should be performed for best probe measurement performance For information on performing probe vertical and skew calibration in your Keysight Infiniium oscil...

Page 14: ...al Density Level test that requires a balun Any variation from the above definition of differential signalling type is not recommended Test Mode 4 requires the N5395C Ethernet Test Fixture and an Arbi...

Page 15: ...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 o...

Page 16: ...est The SMA connections shown are for wire pair A DA and DA in the RJ45 cable This connection is only valid if the DUT has an RJ45 connector To test to wire pair B C or D connect the oscilloscope SMA...

Page 17: ...Overview 1 Keysight E6961A User Guide and Method of Implementation 17 NOTE For all tests use the software supplied with your transmitter PHY to control the Device Under Test...

Page 18: ...nsure that the BroadR Reach 100Base 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 me...

Page 19: ...to 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 Requires Frequency Divide...

Page 20: ...ew 20 Keysight E6961A User Guide and Method of Implementation Figure 1 6 Select Tests Menu with all Tests Selected Displays test limits test description and IEEE specification reference for the select...

Page 21: ...t Shows you how to connect the oscilloscope to the device under test Run Tests Starts the automated tests If the connections to the device under test need to be changed the test pauses shows how chang...

Page 22: ...hod of Implementation Figure 1 7 Configure Tab for Test Mode 1 The Configure Tab allows you to select different oscilloscope channels and measurement attributes For example the signal input can be cha...

Page 23: ...ode 1 Test connections are clearly identified including additional hardware and cables When you make multiple tests where the connections must be changed the software prompts you with appropriate conn...

Page 24: ...rs Public Documents Infiniium Apps BroadR ReachTest ProjectSampl es BroadRReach Device 1 proj Save the current project Saves the current project in the following folder C Users Public Documents Infini...

Page 25: ...f the transmitter Reference 1 specifies the positive output droop of a compliant PHY The positive droop measured with respect to the initial peak value after the zero crossing and the value 500 ns aft...

Page 26: ...compliant PHY The negative droop measured with respect to the initial peak value after the zero crossing and the value 500 ns after the initial peak shall be less than 45 The application triggers the...

Page 27: ...Overview 1 Keysight E6961A User Guide and Method of Implementation 27 Typical Waveform Figure 1 11 Typical Negative Droop Test Waveform using a pair of SMA cables...

Page 28: ...n 5 4 3 Transmit Clock Frequency MASTER Test Information This test measures the frequency of the transmitter clock when the PHY is operating in MASTER mode Reference 1 specifies the symbol transmissio...

Page 29: ...Overview 1 Keysight E6961A User Guide and Method of Implementation 29 Typical Waveform Figure 1 12 Typical MASTER Clock Test Waveform using a pair of SMA cables...

Page 30: ...itter JTXOUT 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...

Page 31: ...n v3 2 Section 5 4 3 Transmit Clock Frequency SLAVE Test Information Reference 1 specifies the symbol transmission rate of a compliant PHY The symbol transmission rate of the MASTER PHY shall be withi...

Page 32: ...1 Overview 32 Keysight E6961A User Guide and Method of Implementation Typical Waveform Figure 1 14 Typical TX Test Waveform using a pair of SMA cables...

Page 33: ...UI Unit Interval after the receiver is properly receiving the data This test measures the data time interval error at the MDI The ideal reference data rate is selected automatically by the oscillosco...

Page 34: ...nce The test accepts only a differential signal When using a supported function generator there is an automatic calibration process to calibrate the function generators If an unsupported model is used...

Page 35: ...Overview 1 Keysight E6961A User Guide and Method of Implementation 35 Figure 1 16 Transmitter Distortion Test Connection Using two Keysight 33250A Function Generators...

Page 36: ...1 Overview 36 Keysight E6961A User Guide and Method of Implementation Figure 1 17 Connection for Transmitter Distortion Test Using Keysight 33612A Function Generator...

Page 37: ...cy 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 on page 67...

Page 38: ...e result cannot be used to determine compliance Transmitter Distortion Enhance Clock Recovery Algorithm Keysight employs an enhanced clock recovery algorithm when the TX_TCLK is not available The algo...

Page 39: ...Overview 1 Keysight E6961A User Guide and Method of Implementation 39 Typical Waveform Figure 1 19 Typical Distortion Test Waveform using a pair of SMA cables...

Page 40: ...e and Method of Implementation 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 Co...

Page 41: ...Reference 2 specifies that the MDI return loss shall meet or exceed the following equation for all frequencies ranging from 1 MHz to 66 MHz with 100 reference impedance at all times when the PHY is t...

Page 42: ...oscilloscope When using the Oscilloscope refer to General Test Setup on page 14 for testing using oscilloscope If you use the N9010B Signal Analyzer convert the differential output to a single ended...

Page 43: ...be between the upper and lower bounds specified in the table below The upper and lower limits are piece wise linear masks connecting points given in the table above A lower PSD mask is provided to en...

Page 44: ...Typical Waveform Figure 1 22 Typical Spectral Density Loss Test Waveform Transmitter Peak Differential Output Reference 2 specifies that in Test Mode 5 when measured with 100 termination the transmit...

Page 45: ...about the individual tests For test result details select any one of the tests form the top pane the test details are shown below In Figure 1 23 below the Transmitter Power Spectral Density test is s...

Page 46: ...1 Overview 46 Keysight E6961A User Guide and Method of Implementation Figure 1 24 Top Portion of a Typical HTML Report...

Page 47: ...com find E6960A E6961A Automotive Ethernet TX Compliance Solution www keysight com find E6961A E6962A Automotive Ethernet RX Compliance Solution includes E6962A BroadR Reach RX Compliance Application...

Page 48: ...1 Overview 48 Keysight E6961A User Guide and Method of Implementation THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK...

Page 49: ...Keysight E6961A Automotive Ethernet Transmit Compliance Solution User Guide and Method of Implementation 49 A Setting Up the N5395C Ethernet Transmitter Test Fixture Introduction 50...

Page 50: ...mo evaluation Refer to Figure A 2 on page 51 The Return Loss impedance calibration board is Board Section 8 See Figure A 1 below This board is used for calibrating the ENA Refer to Calibrating the ENA...

Page 51: ...N5395C Ethernet Transmitter Test Fixture A Keysight E6961A User Guide and Method of Implementation 51 Figure A 1 Return Loss Impedance Calibration Board Figure A 2 N5395C Ethernet Electrical Transmitt...

Page 52: ...lementation Jumper Settings Figure A 3 and Table A 2 on page 53 show the jumper positions for the Ethernet Test Fixture Section 11 applicable for various frequencies Figure A 3 Section 11 on the Ether...

Page 53: ...rnet Transmitter Test Fixture A Keysight E6961A User Guide and Method of Implementation 53 Table A 2 Jumper Locations for Ethernet Test Fixture Section 11 on Test Fixture Filter Bandwidth Jumper Locat...

Page 54: ...A Setting Up the N5395C Ethernet Transmitter Test Fixture 54 Keysight E6961A User Guide and Method of Implementation THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK...

Page 55: ...Keysight E6961A Automotive Ethernet Transmit Compliance Solution User Guide and Method of Implementation 57 B Configure External Instruments Introduction 58...

Page 56: ...SICL address of each instrument The External Instruments Status indicator is red if the instruments are not properly configured 1 From the BroadR Reach Compliance Test Application Set Up tab click th...

Page 57: ...ht IO Libraries Suite Connection Expert utility to obtain the SICL address enter it in the SICL Address field If you do not know the SICL address click the Find button and the Test Compliance Software...

Page 58: ...B Configure External Instruments 60 Keysight E6961A User Guide and Method of Implementation THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK...

Page 59: ...Keysight E6961A Automotive Ethernet Transmit Compliance Solution User Guide and Method of Implementation 59 C External Instrument Calibration Introduction 60...

Page 60: ...librated Connect the equipment as shown in Figure C 1 on page 61 NOTE The AWG Disturbing Signal Source must be Configured before attempting to Calibrate it If the system is not physically configured t...

Page 61: ...p 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 bu...

Page 62: ...e 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 Refer...

Page 63: ...ibration 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 Short SMA Cables Sh...

Page 64: ...the test fixture 3 Connect a ENA input to the SMA test point on Section 10 on the test fixture 4 Calibrate the ENA using the instructions in the ENA s User s Guide The following is a list of setup req...

Page 65: ...Keysight E6961A Automotive Ethernet Transmit Compliance Solution User Guide and Method of Implementation 67 D Using the E6960 66600 Frequency Divider Board Introduction 68...

Page 66: ...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...

Page 67: ...strap combination Conductive floor mat and heel strap combination Both types when used together provide a significant level of ESD protection Of the two only the table mat and wrist strap combination...

Page 68: ...the E6960 66600 Frequency Divider Board 70 Keysight E6961A User Guide and Method of Implementation Figure D 2 Check the Use 10MHz Ref Clock on Main Application Window Configure the test setup as show...

Page 69: ...Under Test DUT 2 Use BNC to BNC cables to connect both J400 and J403 BNC connectors to the oscilloscope and the AWG 10 MHz In 3 Select 4 2 Vpp output voltage by shorting Pin1 and Pin2 of J100 with jum...

Page 70: ...port or the 2 5 mm center positive DC Power input jack may be used The USB jack is not used for any other purpose Input voltage is required to be within 4 5V to 5 5V 500mA Any voltage that is out of s...

Page 71: ...ch A Switch A sets the Fixture operating mode Table D 1 Switch Operating Modes Switches Position Operating mode Comment A1 off Normal running mode Normal operating mode on Sleep mode Change made to an...

Page 72: ...curate 10 MHz signal A8 off NA NA on NA NA Table D 1 Switch Operating Modes Switches Position Operating mode Comment Table D 2 Switch B Operating Modes Divider Comment B1 B2 B3 B4 B5 B6 B7 B8 To obtai...

Page 73: ...ON Flash 2 Hz Input voltage above 5 5V ON ON Table D 4 LED A Indicators Green Red Input signal locked Normal condition ON OFF Lost of Lock Flash 1 Hz OFF Lost of Signal OFF Flash 1 Hz Lost of 48MHz re...

Page 74: ...D Using the E6960 66600 Frequency Divider Board 76 Keysight E6961A User Guide and Method of Implementation THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK...

Page 75: ...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 E...

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