Keysight E6960A
1000Base-T1 Transmitter
Compliance Application
User Guide and
Method of
Implementation
Notices
CAUTION
WARNING
Copyright Notice
© Keysight Technologies 2017 - 2019
No part of this manual may be repro-
duced in any form or by any means
(including electronic storage and
retrieval or translation into a foreign
language) without prior agreement and
written consent from Keysight Technologies as governed by United States and
international copyright laws.
Trademarks
[Relevant acknowledgements should
be included here. Reference “LA-403
When to Use the Trademark Symbol
and Other Trademark Acknowledgements” for guidance. If no acknowledgements are required, remove the
caption.]
Manual Part Number
E6960-90001
Edition
Edition 3.0, March 2019
Printed in:
Printed in Malaysia
Published by:
Keysight Technologies
Bayan Lepas Free Industrial Zone,
11900 Penang, Malaysia
Technology Licenses
The hardware and/or software
described in this document are furnished under a license and may be
used or copied only in accordance with
the terms of such license.
Declaration of Conformity
Declarations of Conformity for this
product and for other Keysight products may be downloaded from the
Web. Go to http://www.keysight.com/
go/conformity. You can then search by
product number to find the latest Declaration of Conformity.
U.S. Government Rights
The Software is “commercial computer
software,” as defined by Federal Acquisition Regulation (“FAR”) 2.101. Pursuant to FAR 12.212 and 27.405-3 and
Department of Defense FAR Supplement (“DFARS”) 227.7202, the U.S.
government acquires commercial computer software under the same terms
by which the software is customarily
provided to the public. Accordingly,
Keysight provides the Software to U.S.
government customers under its standard commercial license, which is
embodied in its End User License
Agreement (EULA), a copy of which can
be found at http://www.keysight.com/
find/sweula. The license set forth in the
EULA represents the exclusive authority
by which the U.S. government may use,
modify, distribute, or disclose the Software. The EULA and the license set
forth therein, does not require or permit, among other things, that Keysight:
(1) Furnish technical information
related to commercial computer software or commercial computer software
documentation that is not customarily
provided to the public; or (2) Relinquish
to, or otherwise provide, the government rights in excess of these rights
customarily provided to the public to
use, modify, reproduce, release, perform, display, or disclose commercial
computer software or commercial computer software documentation. No
additional government requirements
beyond those set forth in the EULA
shall apply, except to the extent that
those terms, rights, or licenses are
explicitly required from all providers of
commercial computer software pursuant to the FAR and the DFARS and are
set forth specifically in writing elsewhere in the EULA. Keysight shall be
under no obligation to update, revise or
otherwise modify the Software. With
respect to any technical data as
defined by FAR 2.101, pursuant to FAR
12.211 and 27.404.2 and DFARS
227.7102, the U.S. government
acquires no greater than Limited Rights
as defined in FAR 27.401 or DFAR
227.7103-5 (c), as applicable in any
technical data.
Warranty
THE MATERIAL CONTAINED IN THIS
DOCUMENT IS PROVIDED “AS IS,”
AND IS SUBJECT TO BEING
CHANGED, WITHOUT NOTICE, IN
FUTURE EDITIONS. FURTHER, TO THE
MAXIMUM EXTENT PERMITTED BY
APPLICABLE LAW, KEYSIGHT DISCLAIMS ALL WARRANTIES, EITHER
EXPRESS OR IMPLIED, WITH REGARD
TO THIS MANUAL AND ANY INFORMATION CONTAINED HEREIN, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. KEYSIGHT
SHALL NOT BE LIABLE FOR ERRORS
OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION
WITH THE FURNISHING, USE, OR
PERFORMANCE OF THIS DOCUMENT
OR OF ANY INFORMATION CONTAINED HEREIN. SHOULD KEYSIGHT
AND THE USER HAVE A SEPARATE
WRITTEN AGREEMENT WITH WARRANTY TERMS COVERING THE MATERIAL IN THIS DOCUMENT THAT
CONFLICT WITH THESE TERMS, THE
WARRANTY TERMS IN THE SEPARATE
AGREEMENT SHALL CONTROL.
Safety Information
A CAUTION notice denotes a hazard. It
calls attention to an operating procedure, practice, or the like that, if not
correctly performed or adhered to,
could result in damage to the product
or loss of important data. Do not proceed beyond a CAUTION notice until
the indicated conditions are fully
understood and met.
A WARNING notice denotes a hazard. It
calls attention to an operating procedure, practice, or the like that, if not
correctly performed or adhered to,
could result in personal injury or death.
Do not proceed beyond a WARNING
notice until the indicated conditions are
fully understood and met.
2 Keysight E6960A User Guide and Method of Implementation
Table of Contents
1Overview
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Installing the Compliance Test Solution Software . . . . . . . . . . . . . .12
Installing the License Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Preparing to Take Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Calibrate the Oscilloscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
General Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Starting the Automotive Ethernet Compliance Test Solution Software 18
Top Menu Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Tabs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Test Mode 1. TX_TCLK125 Frequency and Transmit Jitter Tests . . . . .25
Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Specification References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
TX_TCLK125 Frequency Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Transmit Clock Jitter (MASTER/SLAVE) . . . . . . . . . . . . . . . . . . . . . .26
Test Mode 2. Transmit Clock Frequency (MASTER) and MDI Output Jitter
(MASTER) Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Specification References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Transmit Clock Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
MDI Output Jitter (MASTER) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Test Mode 4. Transmitter Distortion and MDI Return Loss . . . . . . . . . .29
Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Using the Optional E6960A Frequency Divider Board . . . . . . . . . . .30
Specification References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Transmitter Distortion Tests Information . . . . . . . . . . . . . . . . . . . . .30
Transmitter Distortion Enhance Clock Recovery Algorithm . . . . . . .31
MDI Return Loss Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
MDI Return Loss Test Information . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Test Mode 5. Transmitter Power Spectral Density, Transmitter Power Level
Keysight E6960A User Guide and Method of Implementation 3
and Transmitter Peak Differential Output Tests . . . . . . . . . . . . . . . . 36
Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Specification References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Transmitter Power Spectral Density (PSD) . . . . . . . . . . . . . . . . . . . . 38
Transmitter Power Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Transmitter Peak Differential Output . . . . . . . . . . . . . . . . . . . . . . . . 39
Test Mode 6. Output Droop Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Specification References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Transmitter Output Droop Positive Test Information . . . . . . . . . . . . 40
Transmitter Output Droop Negative Test Information . . . . . . . . . . . 41
Viewing the Test Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Other Keysight Automotive Ethernet Applications and Software . . 44
A Setting Up the N5395C Ethernet Transmitter Test Fixture
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
B Configure External Instruments
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
C External Instrument Calibration
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Calibrating the AWG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Calibrating the ENA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
D Using the E6960-66600 Frequency Divider Board
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Static-safe Handling Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Frequency Divider Board Test Setup . . . . . . . . . . . . . . . . . . . . . . . . 67
Connector Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
DIP Switch Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
LED Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
4 Keysight E6960A User Guide and Method of Implementation
List of Figures
Figure 1-1 Connection to the Oscilloscope Using a Pair of SMA
Figure 1-2 Connection to the Oscilloscope using a Differential
Figure 1-3 General Test Setup using the N5395C Evaluation Board
Figure 1-4 Launching the E6960A Compliance Test Application .
Figure 1-5 E6960A 1000Base-T1 Compliance Test Application Main
Figure 1-6 Select Tests Menu with all tests selected . . . . . . . . . .20
Figure 1-7 Configure Tab for Test Mode 1 . . . . . . . . . . . . . . . . . .22
Figure 1-8 Connect Tab for Test Mode 1 . . . . . . . . . . . . . . . . . . . .23
Figure 1-9 Connection for Transmitter Distortion Test Using Keysight
Figure 1-10 Single Ended Connection Setup for MDI Return Loss
Figure 1-11 Differential Connection Setup for MDI Return Loss Test
Figure 1-12 Power Spectral Density Test Using N9010B Signal
Figure 1-13 Typical Results Tab . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Figure 1-14 Top Portion of a Typical HTML Report . . . . . . . . . . . . .43
Figure A-1 N5395C Ethernet Electrical Transmitter Test Fixture .47
Figure A-2 Return Loss Impedance Calibration Board . . . . . . . . .47
Figure A-3 Section 11 on the Ethernet Test Fixture. . . . . . . . . . . .48
Figure A-4 Jumper Location for Ethernet Test Fixture . . . . . . . . .49
Figure B-1 E6960A Compliance Test Application Main Menu . . .52
Figure B-2 BroadR-Reach Compliance Test Application External In-
Figure C-1 AWG Calibration Setup for the Disturbing Signal Source
Figure C-2 E6960A Compliance Test Application Main Menu . . .58
Figure C-3 ENA Calibration Setup (Return Loss) . . . . . . . . . . . . . .59
Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
17
18
Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
81150A Function Generator . . . . . . . . . . . . . . . . . .29
Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
34
Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
struments List . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
57
Keysight E6960A User Guide and Method of Implementation 5
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Figure D-3 Test Setup for 10 MHz Frequency Reference . . . . . . . 67
6 Keysight E6960A User Guide and Method of Implementation
List of Tables
Table 1-1 Test Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Table 1-2 Tabs Menu functions . . . . . . . . . . . . . . . . . . . . . . . . . .21
Table A-1 List of Compliance Test Board Sections . . . . . . . . . . .46
Table D-1 Switch A function states . . . . . . . . . . . . . . . . . . . . . . .69
Table D-2 Switch B function states . . . . . . . . . . . . . . . . . . . . . . .70
Table D-3 LED indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Table D-4 LED A indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Table D-5 LED B indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Keysight E6960A User Guide and Method of Implementation 7
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.
8 Keysight E6960A User Guide and Method of Implementation
Keysight E6960A 1000Base-T1 Transmit Compliance Solution
User Guide and Method of Implementation
1 Overview
Introduction 10
Preparing to Take Measurements 13
Starting the Automotive Ethernet Compliance Test Solution Software 18
Test Mode 1. TX_TCLK125 Frequency and Transmit Jitter Tests 25
Test Mode 2. Transmit Clock Frequency (MASTER) and MDI Output Jitter
(MASTER) Tests 27
Test Mode 4. Transmitter Distortion and MDI Return Loss 29
Test Mode 5. Transmitter Power Spectral Density, Transmitter Power Level and
Transmitter Peak Differential Output Tests 36
Test Mode 6. Output Droop Tests 40
Viewing the Test Report 42
Reference Documents 44
9
1Overview
NOTE
Introduction
Testing a 1000Base-T1 PHY's transmitter is accomplished through the use of
various test modes defined in the 1000Base-T1 specification. See “Reference
Documents” on page 44.
Keysight’s E6960A 1000Base-T1 TX Compliance Application Software (provided
as a software option to the E6961A Automotive Ethernet Solution) provides five
test modes for 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 and do not alter the
electrical and jitter characteristics of the transmitter and receiver from those of
normal operation.
Tab le 1-1 Te st Modes
Tes t Mode Description
1 Setting Master and Slave PHYs for Transmit Clock Jitter in Linked Mode
2 Transmit MDI jitter test in MASTER mode
3 Not Used
4 Transmitter distortion test
5
6 Transmitter Droop Test
10 Keysight E6960A User Guide and Method of Implementation
Normal Operation in Idle Mode. Power Spectral Density
This E6960A User Guide is written as a guide to using the E6960A 1000Base-T1
TX Compliance Application software.
Using the Keysight E6960A 1000Base-T1 Compliance application software along
with an N5395C Ethernet Test Fixture greatly simplifies compliance testing. The
software automatically configures all of the required test equipment reducing the
overall test time.
The E6960A Software:
– Lets you select individual or multiple test to run.
(PSD) mask and power level test.
Overview 1
– 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.
– Allows you to 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 a printable HTML report of the tests that have been run. This report
includes pass/fail limits, margin analysis, and screen captures.
Keysight E6960A User Guide and Method of Implementation 11
1Overview
Installing the Compliance Test Solution Software
1 Make sure you have the minimum version of Infiniium oscilloscope software
2 To obtain the E6960A Compliance Application software, go to Keysight
3 Click the Trials & Licenses tab.
4 Click the Details & Download button.
5 Read and verify the Prerequisites and installation information. Follow the
Installing the License Key
1 Request a license code from Keysight by following the instructions on the
2 After you receive your license code from Keysight, choose Utilities > License
3 In the Install Option License dialog box, enter your license code and click
(see the software release notes) by choosing Help > About Infiniium... from the
main menu.
website: http://www.keysight.com/find/E6960A.
instructions to download and install the application software. Click the red
Download button.
Entitlement Certificate. You will need the oscilloscope's “Option ID Number”,
which you can find in the Help > About Infiniium... dialog box.
Manager > Legacy Licenses.... Depending on the license acquired, select
either Local License or Server License.
Install License. Additional information is required for server based licensing.
Please refer to your entitlement.
4 Click OK in the dialog box that tells you to restart the Infiniium oscilloscope
application software to complete the license installation.
5 Click Close to close the Install Option License dialog box.
6 Choose File > Exit.
7 Restart the Infiniium oscilloscope application software to complete the license
installation.
You can also install the license using Keysight License Manager. For detailed
instructions, refer to the online help for the Keysight License Manager.
12 Keysight E6960A User Guide and Method of Implementation
Preparing to Take Measurements
NOTE
NOTE
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" topic in your
oscilloscope's online help.
If the ambient temperature changes more than 5 °C from the calibration
temperature, internal calibration should be performed again. The delta between
the calibration temperature and the present operating temperature is shown in
the Utilities > Calibration menu.
If you switch cables between channels or other oscilloscopes, it is necessary to
perform cable and probe calibration again. Keysight recommends that, once
calibration is performed, you label the cables with the channel on which they
were calibrated.
Overview 1
Probe Calibration
Before performing the automated tests, you should calibrate the probes.
Calibration of the solder-in probe heads consists of a vertical calibration and a
skew calibration. The vertical calibration should be performed before 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 oscilloscope, refer to the "DC Attenuation/Offset Calibration" and "Skew
Calibration" topics in your oscilloscope's online help.
For more information on calibration/deskew procedures for your particular probe,
refer to the probe's user's guide in the Keysight Probe Resource Center.
Keysight E6960A User Guide and Method of Implementation 13
1Overview
NOTE
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. The type of
connection accepted can be selected in the Setup tab of the test application.
Two Oscilloscope Channels refers to connecting the differential automotive pair
to the oscilloscope using only SMA cables. Refer to Figure 1-1 for more details.
Single Differential Probe refers to connecting the differential automotive pair to
the Oscilloscope using a single differential probe. Refer to Figure 1-2 for more
details. The only variation would be the Power Level Test that requires a balun.
Any variation from the above definition of differential signaling type is not
recommended.
Test Mode 4 requires the N5395C Ethernet Test Fixture and an Arbitrary
Waveform Generator (AWG). Refer to “Test Mode 4. Transmitter Distortion and
MDI Return Loss” on page 29 for specific setup details.
Test Mode 4 also includes an MDI S-Parameter Test.
Test Mode 5 can also use the N9010B Signal Analyzer. Refer to “Test Mode 5.
Transmitter Power Spectral Density, Transmitter Power Level and Transmitter
Peak Differential Output Tests” on page 36 for specific setup details.
For all tests, use the software supplied with your transmitter PHY to control the
Device Under Test.
14 Keysight E6960A User Guide and Method of Implementation
Overview 1
Transmitter
under test
TX+
TX-
100
SMA Cables
Transmitter Clock to oscilloscope Ref Clock In
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.
Figure 1-1 Connection to the Oscilloscope Using a Pair of SMA Cables
Keysight E6960A User Guide and Method of Implementation 15
1Overview
Transmitter
under test
TX+
TX-
100
High
Impedance
Differential
Probe
Transmitter Clock to oscilloscope Ref Clock In
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.
Figure 1-2 Connection to the Oscilloscope using a Differential Probe
16 Keysight E6960A User Guide and Method of Implementation
Overview 1
BNC to
SMA
Cables
D+ D-
Transmitter
Under Test
(DUT)
RJ45 CAT5e LAN Cable
N5395C Ethernet Transmitter Test Fixture
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. To test to wire pair B, C, or D, connect the
oscilloscope SMA cables to the appropriate Evaluation Board SMA connectors.
See Figure 1-3 below. In the event the DUT does not have an RJ45 connector,
user will need to replace Section 1 with any adapter that converts the differential
automotive pair to SMA.
Keysight E6960A User Guide and Method of Implementation 17
Figure 1-3 General Test Setup using the N5395C Evaluation Board
1Overview
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 Launching the E6960A Compliance Test Application
18 Keysight E6960A User Guide and Method of Implementation
Overview 1
1
2
3
4
Figure 1-5 E6960A 1000Base-T1 Compliance Test Application Main
Window
Item Description
1
2
3 Refer to Appendix C “External Instrument Calibration” on page 55
4 Refer to Appendix B “Configure External Instruments” on page 51
Use TX_CLK. Check this if your DUT has its own Transmit Clock. Otherwise, the default clock signal is
used.
Requires Frequency Divider Board. Refer Appendix D “Using the E6960-66600 Frequency Divider
Board” on page 63
3 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. Refer to Appendix B, “Configure External Instruments” on page 51.
Keysight E6960A User Guide and Method of Implementation 19
1Overview
Displays test limits, test description, and IEEE
specification reference for the selected test.
5 The task flow pane, and the tabs in the main pane, show the steps you take in
running the automated tests.
Figure 1-6 Select Tests Menu with all tests selected
6 Figure 1-6 above shows all the tests that are available in E6960A 1000Base-T1
Compliance Test Application.
20 Keysight E6960A User Guide and Method of Implementation
Table 1-2 Tabs Menu functions
Tab Description
Set Up Lets you identify and set up the test environment.
Select Tests
Lets you select the tests you want to run. After tests are run, status indicators show which tests have
passed, failed, or have not run.
Overview 1
Configure
Connect Shows you how to connect the oscilloscope to the device under test.
Run Tests
Automation Lets you construct scripts of commands to drive execution of the application.
Results
HTML Report Report Shows a compliance test report that can be printed. See “Viewing the Test Report” on page 42
Lets you configure test parameters (for example, oscilloscope channels used in test, number of
averages, etc.).
Starts the automated tests. If the connections to the device under test need to be changed, the test
pauses, shows how change the connection, and waits for you to confirm that the changes were made
before continuing.
Contains more detailed information about the tests that have been run. You can change the thresholds
at which marginal or critical warnings appear.
7 Table 1-2 above shows the function description of each tab in the Tabs Menu.
Keysight E6960A User Guide and Method of Implementation 21
1Overview
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
8 Figure 1-7 above shows the figure tab that allows you to select different
oscilloscope channels and measurement attributes.
22 Keysight E6960A User Guide and Method of Implementation
Overview 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 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
9 Figure 1-8 above shows the connect tab of the E6960A 1000Base-T1
Compliance Test Application.
Keysight E6960A User Guide and Method of Implementation 23
1Overview
Top Menu Bar
Tabs
Top Menu Bar
The top menu bar of the compliance application offers several features:
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. You can load a sample project from:
C:\Users\Public\Documents\Infiniium\Apps\1000BT1\ProjectSamples\1000Ba
seT1 Device1.proj.
Save the current project: Saves the current project in the following folder:
C:\Users\Public\Documents\Infiniium\Apps\1000BT1\1000BaseT1 Device
1.proj.
Configure checked tests: Same as the Configure tab.
Run all checked tests: Runs all of the selected tests. Same as the Run Tests
tab.
Run selected branch only: Runs only the selected test.
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.
24 Keysight E6960A User Guide and Method of Implementation
Overview 1
NOTE
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.
Use the software supplied with your transmitter PHY to control the Device Under
Test.
Specification References
[1] 1000Base-T1 IEEE Std 802.3bp-2016, Section 97.5.3.6.
[2] 1000Base-T1 IEEE Std 802.3bp-2016, Section 97.5.2.
[3] 1000Base-T1 IEEE Std 802.3bp-2016, Section 97.5.3.3
TX_TCLK125 Frequency Test
This test measures the frequency of the TX_TCLK125 clock.
Reference [1] specifies the symbol transmission rate of a compliant PHY. The
symbol transmission rate of the MASTER PHY shall be within the range of 750 MHz
±100 ppm.
Reference [2] specifies that Test Mode 1 shall provide access to a frequency
reduced version of the transmit symbol clock or TX_TCLK125. This 125 MHz test
clock is one sixth frequency divided version of the TX_TCLK that times the
transmitted symbols.
The measured frequency of TX_TCLK125 should fall within 125 MHz ±100 ppm.
Keysight E6960A User Guide and Method of Implementation 25
1Overview
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.
Reference [3] specifies that when in test mode 1, and the link is up and the two
PHYs have established link, the RMS (Root Mean Square) value of the MASTER
TX_TCLK125 jitter relative to an unjittered reference shall be less than 5 ps. The
peak-to-peak value of the MASTER TX_TCLK125 jitter relative to an unjittered
reference shall be less than 50 ps.
Reference [3] specifies that when in test mode 1, and the link is up and the two
PHYs have established link, the RMS (Root Mean Square) value of the SLAVE
TX_TCLK125 jitter relative to an unjittered reference shall be less than 10 ps. The
peak-to-peak value of the SLAVE TX_TCLK125 jitter relative to an unjittered
reference shall be less than 100 ps.
This test measures the clock time interval error of the TX_TCLK125 signal at the
MDI. The ideal reference clock is selected automatically by the oscilloscope and
compared to the original signal to determine the clock time interval error.
26 Keysight E6960A User Guide and Method of Implementation
Overview 1
NOTE
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.
Use the software supplied with your transmitter PHY to control the Device Under
Test.
Specification References
[1] 1000Base-T1 IEEE Std 802.3bp-2016, Section 97.5.3.6.
[2] 1000Base-T1 IEEE Std 802.3bp-2016, Section 97.5.2.
[3] 1000Base-T1 IEEE Std 802.3bp-2016, Section 97.5.3.3.
Transmit Clock Frequency
Reference [1] specifies the symbol transmission rate of a compliant PHY. The
symbol transmission rate of the MASTER PHY shall be within the range of 750 MHz
±100 ppm.
Reference [2] specifies that in Test Mode 2 the PHY shall transmit a continuous
pattern of three {+1} symbols followed by three {-1} symbols, with the transmitted
symbols timed from its local clock source of 750 MHz. The transmitter output is a
125 MHz signal. Hence the accuracy of the transmit clock frequency is also 125
MHz ±100 ppm.
MDI Output Jitter (MASTER)
Reference [3] specifies that when in test mode 2, the RMS (Root Mean Square)
value of the MDI output jitter, relative to an unjittered reference shall be less than 5
ps.
Keysight E6960A User Guide and Method of Implementation 27
1Overview
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.
28 Keysight E6960A User Guide and Method of Implementation
Test Mode 4. Transmitter Distortion and MDI Return Loss
BNC to BNC Cables
LAN to USB cable
N5395A Ethernet Transmitter Test Fixture
DUT
SMA to
SMA
Cables
RJ45 CAT5e LAN
BNC to
SMA
Cables
D+
D-
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. 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, the
user will have to manually calibrate the function generators.
Only the Keysight 81150A Function Generator is supported in this test.
Overview 1
Figure 1-9 Connection for Transmitter Distortion Test Using Keysight
81150A Function Generator
Keysight E6960A User Guide and Method of Implementation 29
1Overview
NOTE
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.
[2] 1000Base-T1 IEEE Std 802.3bp-2016, Section 97.7.2.1.
Transmitter Distortion Tests Information
When operating in Test Mode 4 and capturing the waveform using the Section 11
of the fixture, the peak distortion shall be less than 15 mV.
If using the Frequency Divider, connect the 10 MHz output(s) of the divider to
the 10 MHz Ref In Input of the oscilloscope and function generator for clock
synchronization.
Reference [1] specifies that the peak distortion is determined by sampling the
differential signal output with the symbol rate clock at an arbitrary phase and
processing a block of any 2047 consecutive samples with MATLAB code in
Reference [1].
Alternatively, this test can also be run without the disturbing signal, but the result
cannot be used to determine compliance.
30 Keysight E6960A User Guide and Method of Implementation
Transmitter Distortion Enhance Clock Recovery Algorithm
NOTE
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.
This test can only be run using a differential output from the transmitter (MDI).
Refer to “General Test Setup” on page 14 for connection details. A differential
probe cannot be used for this test.
Overview 1
Keysight E6960A User Guide and Method of Implementation 31
1Overview
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.
User has the option to either run a differential measurement, by selecting Two
Oscilloscope Channels on the Setup tab or a single ended measurement(using
BALUN) by selecting the Single Differential Probe signaling type. Please refer to
“Calibrating the ENA” on page 59.
32 Keysight E6960A User Guide and Method of Implementation
Test Setup
LAN/USB
Connection
E5071C ENA
DSOS254A Infiniium
Oscilloscope
1250-1250
N-type(M)
to SMA
Adapter
SMA to SMA Cables
N5395A Ethernet Transmitter Test Fixture
Twisted Pair
to SMA
Converter
MDI DUT
Twisted Pair
Cable
Single Ended Connection Setup
Overview 1
Keysight E6960A User Guide and Method of Implementation 33
Figure 1-10 Single Ended Connection Setup for MDI Return Loss Test
1Overview
Differential Connection Setup
Figure 1-11 Differential Connection Setup for MDI Return Loss Test
34 Keysight E6960A User Guide and Method of Implementation
MDI Return Loss Test Information
ReturnLoss f()
18 1810log()
20
f
------
–2f20<≤
18 20 f 100<≤
18 16.710log()
f
100
---------
– 100 f 600≤≤
≥
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.
where f is the frequency in MHz.
In other words, the return loss shall meet or exceed the equation above for all
frequencies ranging from 2 MHz to 600 MHz (with 100 Ω differential impedance) at
all times when the PHY is transmitting data or control symbols.
Overview 1
Keysight E6960A User Guide and Method of Implementation 35
1Overview
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” on page 14.
If you use the N9010B Signal Analyzer, convert the differential output to a
single-ended output using a balun. Use the balun on the N5395C Ethernet Test
Fixture as shown in Figure 1-12 below.
The Power Level Test can be run using either the spectrum analyzer or and
oscilloscope. For this particular test, irrespective of equipment used, convert the
differential output to a single-ended output using a balun. Use the balun on the
N5395C Ethernet Test Fixture as shown in Figure 1-12 below.
Figure 1-12 Power Spectral Density Test Using N9010B Signal Analyzer
36 Keysight E6960A User Guide and Method of Implementation
NOTE
Use the software supplied with your transmitter PHY to control the Device Under
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.
Overview 1
Keysight E6960A User Guide and Method of Implementation 37
1Overview
UpperPSD f()
80–
dBm
Hz
------------
0 f 100≤<
76–
f
25
------–
dBm
Hz
------------
100 f 400≤<
85.6–
f
62.5
----------–
dBm
Hz
------------
400 f< 600≤
=
LowerPSD f()
86–
dBm
Hz
------------
40 f< 100≤
82–
f
25
------–
dBm
Hz
------------
100 f< 400≤
=
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.
38 Keysight E6960A User Guide and Method of Implementation
where f is the frequency in MHz.
The resolution bandwidth of 100 kHz and sweep time of larger than 1 second are
considered in PSD measurements.
This test could be run using an external spectrum analyzer or the oscilloscope.
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.
Overview 1
Keysight E6960A User Guide and Method of Implementation 39
1Overview
NOTE
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
Test.
Specification References
[1] 1000Base-T1 IEEE Std 802.3bp-2016, Section 97.5.3.1.
Transmitter Output Droop Positive Test Information
This test measures the positive output droop of the transmitter.
Reference [1] specifies the positive output droop of a compliant PHY. The positive
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%.
The application triggers the Test Mode 6 signal on the rising edge and determines
the time the positive peak occurred at 4 ns after the zero crossing. The application
then measures the voltage 12 ns after the initial peak crossing. 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.
40 Keysight E6960A User Guide and Method of Implementation
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%.
The application triggers the Test Mode 6 signal on the falling edge and determines
the time the negative peak occurred at 4 ns after the zero crossing. The application
then measures the voltage 12 ns after the initial peak crossing. 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.
Overview 1
Keysight E6960A User Guide and Method of Implementation 41
1Overview
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.
Figure 1-13 Typical Results Tab
Figure 1-14 below shows a portion of a typical HTML Report. Below this segment
are waveforms and more test data.
42 Keysight E6960A User Guide and Method of Implementation
Overview 1
Figure 1-14 Top Portion of a Typical HTML Report
Keysight E6960A User Guide and Method of Implementation 43
1Overview
Reference Documents
IEEE 802.3 Ethernet Working Group:
www.ieee802.org/3/index.html
Keysight’s Automotive Ethernet Test Solutions Web Page:
www.keysight.com/find/broadr-reach
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 –
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.
includes E6962A RX Compliance Application (100Base-T1 compliant)
software:
www.keysight.com/find/E6962A
– E6963A Automotive Ethernet Link Segment Compliance Solution – includes
E6963A Link Segment Compliance Application (100Base-T1 compliant)
software:
www.keysight.com/find/E6963A
– N6467B Transmit Compliance Application Software (100Base-T1 compliant):
www.keysight.com/find/N6467B
– N8847A Protocol Triggering and Decoder Software (100Base-T1 compliant)
www.keysight.com/find/N8847A
44 Keysight E6960A User Guide and Method of Implementation
Keysight E6960A 1000Base-T1 Transmit Compliance Solution
User Guide and Method of Implementation
A Setting Up the N5395C
Ethernet Transmitter Test
Fixture
Introduction 46
45
A 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. A different, comparable fixture may be used, but is not guaranteed to
produce the same result.
Notice that the main Test Fixture board is divided into eight sections plus an area
to store jumpers. Not all sections are used in this demo/evaluation. Refer to
Figure A-1 on page 47.
Tab le A-1 List of Compliance Test Bo ard Sections
Compliance Test Board
Section
1 Differential Return Loss used for RJ45 devices Test Mode 4, Transmitter Distortion Test
2Load & Probes Not Used
3 100BT Jitter Not Used
4 Common Mode Output Voltage Not Used
6 10BT w/o TP Model Not Used
7 10BT with TP Model Not Used
10 Balun used for Power Spectrum Density Test Test Mode 5, PSD and Power Level Test
11 Disturbance/Distortion Test Mode 4, Transmitter Distortion Test
Description Compliance Test Mode Number
The Return Loss impedance calibration board is Board Section 8. See Figure A-2
below. This board is used for calibrating the ENA. Refer to “Calibrating the ENA”
on page 59. This board is only applicable if your DUT has an RJ45 connector. For
other DUT's that do not have a RJ45 connector, user will need to fabricate a
custom calibration kit.
46 Keysight E6960A User Guide and Method of Implementation
Setting Up the N5395C Ethernet Transmitter Test Fixture A
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 47
A Setting Up the N5395C Ethernet Transmitter Test Fixture
Section 11
Jumpers. See
Figure A-4 for
settings.
Jumper Settings
Figure A-4 shows the jumper position for the Ethernet Test Fixture Section 11
applicable for E6960A Compliance Test.
48 Keysight E6960A User Guide and Method of Implementation
Figure A-3 Section 11 on the Ethernet Test Fixture.
Setting Up the N5395C Ethernet Transmitter Test Fixture A
NOTE
Figure A-4 Jumper Location for Ethernet Test Fixture
If you need similar jumper cables, please contact your Keysight sales
representative for more details.
Keysight E6960A User Guide and Method of Implementation 49
A Setting Up the N5395C Ethernet Transmitter Test Fixture
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.
50 Keysight E6960A User Guide and Method of Implementation
Keysight E6960A 1000Base-T1 Transmit Compliance Solution
User Guide and Method of Implementation
B Configure External
Instruments
Introduction 52
51
B Configure External Instruments
NOTE
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. The External Instruments Status indicator is red
if the instruments are not properly configured.
The instruments must be connected to the oscilloscope prior to configuring
them. This is generally through a USB connection.
1 From the Compliance Test Application Set Up tab, click the Configure button.
This opens the External Instruments List dialog box.
Figure B-1 E6960A Compliance Test Application Main Menu
52 Keysight E6960A User Guide and Method of Implementation
Configure External Instruments B
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. If you do not know the SICL address, click the Find button and
the Test Compliance Software will attempt to locate and identify the AWG.
4 Click the Update button.
Keysight E6960A User Guide and Method of Implementation 53
B 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.
54 Keysight E6960A User Guide and Method of Implementation
Keysight E6960A 1000Base-T1 Transmit Compliance Solution
User Guide and Method of Implementation
C External Instrument
Calibration
Introduction 56
55
C External Instrument Calibration
NOTE
NOTE
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.
The AWG Disturbing Signal Source must be Configured before attempting to
Calibrate it. If the system is not physically configured to perform the calibration,
the application prompts you to change the physical configuration. Refer to
“Appendix B. “Configure External Instruments” on page 51
Instead of connecting SMA to SMA cables on the N5393C Evaluation Board,
connect 50 Terminators to the two DUT SMA Connectors on the Evaluation
Board. This is shown in Figure C-1 below
56 Keysight E6960A User Guide and Method of Implementation
External Instrument Calibration C
Connect BNC to BNC
cables to AWG
Connect 50 SMA
Terminations
BNC to SMA Cables
N5395A Ethernet Transmitter Test Fixture
Keysight E6960A User Guide and Method of Implementation 57
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.
C 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. Refer to the E6960A online help for a more detailed
explanation.
58 Keysight E6960A User Guide and Method of Implementation
Calibrating the ENA
Short
SMA
Cables
N5395A Ethernet Transmitter Test Fixture
Return Loss Impedance
Calibration Board
Short RJ45 cable
Short Open
Load
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.
External Instrument Calibration C
Keysight E6960A User Guide and Method of Implementation 59
Figure C-3 ENA Calibration Setup (Return Loss)
C External Instrument Calibration
NOTE
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. Connect
the other end to the two SMA test points on Section 10 on 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 requirements.
– Set Measurement to Ref1 Fwd S
– Set Start to 2 MHz.
– Set Stop to 600 MHz.
– Set Format to Log Mag.
– Set Scale Div to 5.
– Set Scale Ref to reference line position 9.
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.
11
.
60 Keysight E6960A User Guide and Method of Implementation
External Instrument Calibration C
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. This connection may be done while the E5071C’s power is on.
2 Allow the Ecal module to warm up for 15 minutes until the module indicator
changes from WAIT to READY.
3 Connect port A and port B on the Ecal module to the ENA’s test ports (using
SMA cables) to be calibrated. Use the N-type (M) to SMA Adapter for easy
connection of SMA cables.
4 Press Channel Next/Channel Prev keys to select the channel for which you want
to perform the calibration.
Keysight E6960A User Guide and Method of Implementation 61
C 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.
7 The following is a list of setup requirements prior to running the calibration
routine.
– Set Measurement to S
– Set Start to 2 MHz.
– Set Stop to 600 MHz.
– Set Format to Log Mag.
dd11
.
62 Keysight E6960A User Guide and Method of Implementation
Keysight E6960A 1000Base-T1 Transmit Compliance Solution
User Guide and Method of Implementation
D Using the E6960-66600
Frequency Divider Board
Introduction 64
63
D 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.
Figure D-1 Keysight’s E6960-66600 Frequency Divider Board
64 Keysight E6960A User Guide and Method of Implementation
Using the E6960-66600 Frequency Divider Board D
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:
– Conductive table-mat and
wrist-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 provides
adequate ESD protection when used alone. To ensure user safety, the static-safe
accessories must provide at least 1 MΩ of isolation from ground.
Observe appropriate ESD precautions before connecting and disconnecting
cables and changing the positions of jumpers ans switches.
Keysight E6960A User Guide and Method of Implementation 65
D 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
66 Keysight E6960A User Guide and Method of Implementation
Using the E6960-66600 Frequency Divider Board D
LAN or USB cable
BNC to BNC Cables
N5395A Ethernet Transmitter Test Fixture
RJ45 CAT5e LAN Cable
BNC to
SMA
Cables
D+
D-
10MHz Ref in to oscilloscope and AWG Master BNC to BNC cables
Frequency
Divider
Board
TX_CLK
SMA to SMA
cable
DUT
SMA
to
SMA
Cables
Configure the test setup as shown below.
Figure D-3 Test Setup for 10 MHz Frequency Reference
Frequency Divider Board Test Setup
1 Connect CH1 SMA connector to the Device 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 jumper.
Remark: 10MHz ref input amplitude and frequency specification for every
Keysight E6960A User Guide and Method of Implementation 67
oscilloscope might be different. Please ensure the oscilloscope that you use
meets the specifications. In the event it doesn't, an attenuator might be
required.
4 Select Normal Running mode by switching switch A1 to OFF.
5 Select Frequency Tracking mode by switching switch A2 to OFF.
D 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. (4.5V to 5.5V @450mA).
At power on, the:
– Power LED PWR (D303) should light up as GREEN
– LED A (D302) should light up as GREEN
– LED B (D304) should light up as GREEN
Connector Description
This section describes the various user components on the E6960-66600.
USB type-B / DC Jack
Provides power to the fixture. Either the USB port or the 2.5 mm, center positive
purpose. Input voltage is required to be within +4.5V to +5.5V @500mA. Any
voltage that is out of specification will trigger a warning on the Power LED.
SMA
Provides an interface to feed the input signal into the test fixture. CH1 connector
is 50 Ω terminated and CH2 connector is 10k Ω terminated.
BNC
Both J400 and J403 produce a separate output clock signal. The signals are
back-terminated by 50 Ω.
Jumpers
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
68 Keysight E6960A User Guide and Method of Implementation
Using the E6960-66600 Frequency Divider Board D
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.
Table D-1 Switch A function states
Switches Position Operating mode Comment
A1
off Normal running mode Normal operating mode
on Sleep mode Change made to any of the switches are ignored
A2
A3
A4
A5
A6
A7
A8
off Frequency Tracking Mode Output frequency track to input frequency
on Lock Frequency Mode Output clock is phase lock to input clock
off NA NA
on NA NA
off NA NA
on NA NA
off NA NA
on NA NA
off Select CH1 as input NA
on Select CH2 as input NA
off NA NA
on NA NA
off NA NA
on NA NA
Keysight E6960A User Guide and Method of Implementation 69
D Using the E6960-66600 Frequency Divider Board
Switch B
Switch B sets the frequency divider to the relevant setting.
Tab le D-2 Switch B function states
Divider Comment
B1 B2 B3 B4 B5 B6 B7 B8 To obtain 10 MHz output:
off off off off off off off off Not valid (def) Free Run Mode
on off off off off off off off Div 1 Targeted 10MHz input clock
off on off off off off off off Div 5/2 Targeted 25MHz input clock
off off on off off off off off Div 20/3 Targeted 66.67MHz input clock
off off off on off off off off Div 25/2 Targeted 125MHz input clock
off off off off on off off off Div 75 Targeted 750MHz input clock
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.
LED Description
Power LED
Tab le D-3 LED indicators
Green Red
Input voltage below 4.5V ON Flash 1 Hz
Input voltage below3.6V ON Flash 2 Hz
Input voltage above 5.5V ON ON
70 Keysight E6960A User Guide and Method of Implementation
Using the E6960-66600 Frequency Divider Board D
LED A
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 reference OFF ON
LED B
Table D-5 LED B indicators
Green Red
Valid switch B configuration (Normal condition) ON OFF
Invalid switch B configuration Flash 1 Hz OFF
Missing input signal/ input signal out of range/ Warning. See LED A for list of
warning
N/A ON
Keysight E6960A User Guide and Method of Implementation 71
D Using the E6960-66600 Frequency Divider Board
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.
72 Keysight E6960A User Guide and Method of Implementation
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
Loading...