Teledyne QPHY-ENET User Manual
QPHY-ENET
Ethernet Serial Data
Operator’s Manual
Revision G – October, 2008
Relating to the Following Release Versions:
• Software Option Rev. 5.7
• ENET Script Rev. 1.7
• Style Sheet Rev. 1.2
LeCroy Corporation
700 Chestnut Ridge Road
Chestnut Ridge, NY 10977–6499
Tel: (845) 578 6020, Fax: (845) 578 5985
Internet: www.lecroy.com
© 2008 by LeCroy Corporation. All rights reserved.
LeCroy, ActiveDSO, WaveLink, JitterTrack, WavePro, WaveMaster, WaveSurfer, WaveExpert, WaveRunner and
WaveJet are registered trademarks of LeCroy Corporation. Other product or brand names are trademarks or
requested trademarks of their respective holders. Information in this publication supersedes all earlier versions.
Specifications subject to change without notice.
This electronic product is subject to
disposal and recycling regulations
that vary by country and region.
Manufactured under an ISO 9000
Registered Quality Management System
Visit Hwww.lecroy.comH to view the
certificate.
Many countries prohibit the
disposal of waste electronic
equipment in standard waste
receptacles.
For more information about proper
disposal and recycling of your
LeCroy product, please visit
www.lecroy.com/recycle.
Document Number: 915044 Rev G
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QPHY-ENET Software Option
TABLE OF CONTENTS
INTRODUCTION ........................................................................................................................ 7
Compatibility ............................................................................................................................................................... 7
10Base-T, 100Base-TX and 1000Base-T .......................................................................................................... 7
10Base-T and 100Base-TX ................................................................................................................................ 7
Test Items ................................................................................................................................................................... 8
10Base-T [IEEE 802.3-2005] .............................................................................................................................. 8
100Base-TX [ANSI X3.263-1995] ....................................................................................................................... 8
1000Base-T [IEEE 802.3-2005] on pair A, B, C and D....................................................................................... 9
TF-ENET-B Test Fixture Package ............................................................................................................................ 10
Ethernet Test Fixture Sections ................................................................................................................................. 11
QualiPHY Compliance Test Platform ....................................................................................................................... 13
INSTALLATION ....................................................................................................................... 15
Oscilloscope Option Key Installation ........................................................................................................................ 15
Typical (Recommended) Configuration .................................................................................................................... 15
Remote (Network) Configuration ............................................................................................................................. 15
Oscilloscope Selection ............................................................................................................................................. 15
Connecting the oscilloscope to the Device Under Test (DUT) ................................................................................. 16
Accessing the QPHY-ENET Software using QualiPHY ........................................................................................... 16
Customizing QualiPHY ............................................................................................................................................. 18
QualiPHY-ENET Operation ...................................................................................................................................... 20
1000Base-T A, B, C or D Pair Selection .................................................................................................................. 21
OSCILLOSCOPE OPERATION .............................................................................................. 22
10Base-T Tests ........................................................................................................................................................ 24
Figure 13. Section A 10Base-T test area ......................................................................................................... 24
Table 2. 10Base-T section A jumper setting ..................................................................................................... 24
10Base-T DOV Mask and Voltage Test ........................................................................................................... 25
10Base-T TP_IDL Mask Test ........................................................................................................................... 28
10Base-T Link Test Pulse Mask ....................................................................................................................... 31
10-Base-T Output Timing Jitter ......................................................................................................................... 34
10Base-T Common Mode Output Voltage Test ............................................................................................... 37
100Base-TX Tests .................................................................................................................................................... 38
100Base-TX compliance test patterns .............................................................................................................. 39
100Base-TX Mask Test .................................................................................................................................... 41
100Base-TX Jitter Test ..................................................................................................................................... 42
100Base-TX Duty cycle distortion ..................................................................................................................... 43
100Base-TX Amplitude, Symmetry, and Overshoot ......................................................................................... 44
100Base-TX Rise and Fall Time ....................................................................................................................... 46
1000Base-T Measurements ..................................................................................................................................... 47
1000Base-T Peak Differential Voltage, Droop, Template - Mode 1 with Disturbing Signal ............................. 48
1000Base-T Transmitter Distortion - Mode 4 with Disturbing Signal ................................................................ 52
Mode 1 and Mode 4 without Disturbing Signal ................................................................................................. 54
1000BaseT jitter tests – with and without TX_TCLK ........................................................................................ 55
1000Base-T Master Jitter - Mode 2 without TX_TCLK ..................................................................................... 57
1000Base-T Slave Jitter - Mode 3 without TX_TCLK ....................................................................................... 58
1000Base-T Master and Slave Jitter - with TX_TCLK ...................................................................................... 59
1000Base-T Common Mode Output Voltage Test ........................................................................................... 66
TF-ENET-B JUMPER PIN CONFIGURATION GENERAL INFORMATION ............................ 67
Jumpers and Connectors .................................................................................................................................. 68
10BT w & w/o Twisted Pair Model section (A) .................................................................................................. 68
1000BT Jitter section (B) .................................................................................................................................. 68
Common Mode Output Voltage section (C) ...................................................................................................... 69
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1000BT Template Tests section (D) ................................................................................................................. 69
Load & Probes section (F) ................................................................................................................................ 69
Differential Return Loss section (G) .................................................................................................................. 69
LINK PARTNER TESTING FOR 10BASE-T & 100BASE-TX DEVICES ................................ 70
TF-ENET-B TEST AND CALIBRATION PROCEDURES .......................................................... 72
Cable Deskewing ..................................................................................................................................................... 72
Signal Path Calibration Procedure ........................................................................................................................... 74
Disturber Calibration Procedure ............................................................................................................................... 77
Disturbing Signal Source .......................................................................................................................................... 78
Mode 1 Disturbing Signal .................................................................................................................................. 78
Mode 4 Disturbing Signal .................................................................................................................................. 78
Recommended Generator ................................................................................................................................ 78
FIGURES
Figure 1. TF-ENET-B test fixture package ........................................................................................................... 10
Figure 2. TF-ENET-B test fixture board sections ................................................................................................ 11
Figure 3. Report menu in QualiPHY General Setup ............................................................................................ 13
Figure 4. The Test Report includes a summary table with links to the detailed test results ......................... 14
Figure 5. QualiPHY main menu and compliance test Standard selection menu ............................................. 16
Figure 6. QualiPHY configuration selection menu ............................................................................................. 17
Figure 7. QualiPHY test item selection menu ...................................................................................................... 18
Figure 8. Variable Setup and Limits Manager windows ..................................................................................... 19
Figure 9. Start button ............................................................................................................................................. 20
Figure 10. Example of pop-up message box ....................................................................................................... 20
Figure 11. Example of pop-up connection diagram and dialog box ................................................................. 20
Figure 12. ENET Main Menu .................................................................................................................................. 22
Figure 13. Section A 10Base-T test area .............................................................................................................. 24
Figure 14. Fixture setup for 10Base-T mask test ................................................................................................ 25
Figure 15. 10Base-T DOV Mask Test .................................................................................................................... 26
Figure 16. DOV Peak Voltage Test ....................................................................................................................... 27
Figure 17. 10Base-T DOV Harmonics ................................................................................................................... 27
Figure 18. Fixture setup for TP_IDL test .............................................................................................................. 28
Figure 19. TP_IDL head mask test ........................................................................................................................ 29
Figure 20. TP_IDL tail mask test ........................................................................................................................... 30
Figure 21. Fixture setup for Link Pulse mask test .............................................................................................. 31
Figure 22. Link pulse mask test (head portion) .................................................................................................. 32
Figure 23. Link pulse mask test (tail portion) ...................................................................................................... 33
Figure 24. Fixture setup for jitter test .................................................................................................................. 34
Figure 25. Output Timing Jitter for 8BT ............................................................................................................... 35
Figure 26. Output Timing Jitter for 8.5BT ............................................................................................................ 36
Figure 27. Fixture setup for Common Mode Output Voltage ............................................................................. 37
Figure 28. Fixture setup for 100Base-TX mask test ........................................................................................... 39
Figure 29. Adjustment of vertical scale and coupling ........................................................................................ 40
Figure 30. 100Base-TX Mask Test ........................................................................................................................ 41
Figure 31. 100Base-TX Jitter Test ........................................................................................................................ 42
Figure 32. 100Base-TX duty cycle distortion ...................................................................................................... 43
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Figure 33. 100Base-TX differential output voltage and overshoot ................................................................... 45
Figure 34. 100Base-TX Rise and Fall Time .......................................................................................................... 46
Figure 35. Transmitter test signal in IEEE 802.3-2005 standard in clause 40.6 ............................................... 47
Figure 36. Fixture setup for Mode 1 and Mode 4 test with Disturbing Signal .................................................. 48
Figure 37. Block diagram of TF-ENET-B fixture section D ................................................................................ 49
Figure 38. 1000Base-T mode 1 test showing all masks ..................................................................................... 50
Figure 39. 1000Base-T mode 1 test showing one mask; all mask test results are listed in the menu ......... 51
Figure 40. 1000Base-T mode 1 test main menu .................................................................................................. 51
Figure 41. Setting the disturbing signal level for mode 1 test .......................................................................... 53
Figure 42. Mode 4 distortion measurement ......................................................................................................... 53
Figure 43. Fixture setup for Mode 1 and Mode 4 test without Disturbing Signal ............................................ 54
Figure 44. Menu setting for making the measurements without disturber present ........................................ 54
Figure 45. Mode 2 and Mode 3 w/o TX_TCLK w/o Link Partner ........................................................................ 56
Figure 46. Mode 2 and Mode 3 with TX_TCLK and Link Partner ....................................................................... 56
Figure 47. Mode 2 with TX_TCLK measuring Jtxout .......................................................................................... 60
Figure 48. Master Jitter with TX_TCLK and Link Partner ................................................................................... 60
Figure 49. Slave Jitter setup with TX_TCLK and Link Partner .......................................................................... 62
Figure 50. Example Slave with TX_TCLK Jitter display. .................................................................................... 63
Figure 51. Jitter test channel definition, this cable connects the Device Under Test to the Link Partner ... 65
Figure 52. Fixture setup for Common Mode Output Voltage ............................................................................. 66
Figure 53. TF-ENET-B test fixture board .............................................................................................................. 67
Figure 54. TF-ENET-B with jumpers and connections highlighted in yellow and labeled accordingly ........ 67
Figure 55. TF-ENET-B with connectors used for Link Partner testing ............................................................. 70
Figure 56. Example of setting the Ethernet Card on a Windows-Based PC to 10Mbps/Half Duplex Mode .. 70
Figure 57. The Skew parameter right side dialog, Skew clock 2 tab, showing default setup ........................ 73
Figure 58. Ethernet test menu for Differential Data connection confirmation ................................................. 74
Figure 59. TF-ENET-B fixture Disturbing Signal section block diagram .......................................................... 75
Figure 60. Data Amplitude measurement for Splitter calibration...................................................................... 76
Figure 61. Attenuated data measurement for Splitter calibration ..................................................................... 76
Figure 62. Disturbing Signal Amplitude measurement ...................................................................................... 77
TABLES
Table 1. Test Supported by TF-ENET-B Test Fixture ......................................................................................... 12
Table 2. 10Base-T section A jumper setting........................................................................................................ 24
Table 3. Pair and Jumpers configurations .......................................................................................................... 39
Table 4. Gigabit Ethernet tests, modes and fixtures .......................................................................................... 47
Table 5. Section D test pair jumper configurations ............................................................................................ 49
Table 6. Section G connector configuration and pair ........................................................................................ 54
Table 7. Mode 1 and 4 test Without Disturbing Signal ....................................................................................... 55
Table 8. Jitter Test Mode Limits ........................................................................................................................... 57
Table 9. Jumper configuration for each pair measurements (connection & termination) ............................. 69
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INTRODUCTION
QPHY-ENET is an automated test package that performs electrical tests for the three common networking
standards over unshielded twisted pair (UTP) cables normally referred to as CAT5 or CAT5E. The electrical tests
are performed on 10Base-T, 100Base-TX, and 1000Base-T signals as specified in the IEEE 802.3-2005 and
ANSI X3.263-1995 standards.
The QPHY-ENET option gives the user the ability to both automate compliance testing and debug devices, hosts
and hubs. Users may be specifically interested in the following capabilities:
• Users interested in compliance testing should begin by using QualiPHY.
• Users interested in debugging circuits, should begin by using the oscilloscope’s embedded test tools.
• Users that begin by using QualiPHY may detect failures on their device, and then have the option of
switching to the oscilloscope’s embedded test tools.
This manual covers the use of both QualiPHY (compliance testing) and the oscilloscope’s embedded test tools
(debugging).
The QualiPHY environment provides automated testing and report generation. For more information about
QualiPHY, see the QualiPHY Operator’s Manual (PDF document).
Compatibility
ENET is a software option compatible with the following LeCroy X-Stream™ oscilloscopes:
10Base-T, 100Base-TX and 1000Base-T
Oscilloscopes with a bandwidth of less than 1 GHz are not recommended for these standards.
Some tests requires at least 4 MS of memory in order to run (e.g. Mode 2 w/o clk Master Jitter on 1000Base-T).
• All WaveMaster series oscilloscopes
• All SDA series Serial Data Analyzer
• All DDA series Disk Drive Analyzer
• WavePro 7xxZi
• WavePro 7100, 7200, 7300, including “A” models
• WaveRunner 6100, 6200, including “A” models
• WaveRunner 104Xi, 204Xi, including "MXi" models
10Base-T and 100Base-TX
• WaveRunner 62Xi, 64Xi, 44Xi, including "MXi" models
• WaveRunner 6050 including “A” models
QPHY-ENET Operator’s Manual Rev G
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Test Items
10Base-T [IEEE 802.3-2005]
Peak Differential Output Voltage [14.3.1.2.1]
Differential Output Voltage Harmonics [14.3.1.2.1]
Template - Internal MAU (Normal & Inverted) [14.3.1.2.1]
Template - External MAU (Normal & Inverted) [14.3.1.2.1]
TP_IDL 100 Ω without TPM (Head & Tail) [14.3.1.2.1]
TP_IDL Load 1 without TPM (Head & Tail) [14.3.1.2.1]
TP_IDL Load 2 without TPM (Head & Tail) [14.3.1.2.1]
Link Pulse 100 Ω without TPM (Head & Tail) [14.3.1.2.1]
Link Pulse Load 1 without TPM (Head & Tail) [14.3.1.2.1]
Link Pulse Load 2 without TPM (Head & Tail) [14.3.1.2.1]
TP_IDL 100 Ω with TPM (Head & Tail) [14.3.1.2.1]
TP_IDL Load 1 with TPM (Head & Tail) [14.3.1.2.1]
TP_IDL Load 2 with TPM (Head & Tail) [14.3.1.2.1]
Link Pulse 100 Ω with TPM (Head & Tail) [14.3.1.2.1]
Link Pulse Load 1 with TPM (Head & Tail) [14.3.1.2.1]
Link Pulse Load 2 with TPM (Head & Tail) [14.3.1.2.1]
8BT Output Timing Jitter 100 Ω without TPM Internal MAU [14.3.1.2.3]
8.5BT Output Timing Jitter 100 Ω without TPM Internal MAU [14.3.1.2.3]
8BT Output Timing Jitter 100 Ω with TPM Internal MAU [14.3.1.2.3]
8.5BT Output Timing Jitter 100 Ω with TPM Internal MAU [14.3.1.2.3]
Common mode output voltage [14.3.1.2.5]
100Base-TX [ANSI X3.263-1995]
UTP DOV Base to Upper [ANSI 9.1.2.2]
UTP DOV Base to Lower [ANSI 9.1.2.2]
Overshoot Positive [ANSI 9.1.3]
Overshoot Negative [ANSI 9.1.3]
Signal Amplitude Symmetry [ANSI 9.1.4]
Rise Base to Upper [ANSI 9.1.6]
Fall Upper to Base [ANSI 9.1.6]
Rise Lower to Base [ANSI 9.1.6]
Fall Base to Lower [ANSI 9.1.6]
Rise/Fall Symmetry [ANSI 9.1.6]
Duty Cycle Distortion [ANSI 9.1.8]
Jitter Base to Upper [ANSI 9.1.9]
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Jitter Base to Lower [ANSI 9.1.9]
Twisted Pair Active Output Interface template [ANSI Appendix J]
1000Base-T [IEEE 802.3-2005] on pair A, B, C and D
Peak Differential Output Voltage point A, B, A vs. B, C, D [40.6.1.2.1]
Maximum Output Droop FG, HJ [40.6.1.2.2]
Template Mask point A, B, C, D, F, H [40.6.1.2.3]
Transmitter Distortion - Mode 4 [40.6.1.2.4]
Transmitter timing jitter Master (UnFiltered & Filtered) - Mode 2 [40.6.1.2.5]
Transmitter timing jitter Slave (UnFiltered & Filtered) - Mode 3 [40.6.1.2.5]
MDI common-mode output voltage [40.8.3.3]
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TF-ENET-B Test Fixture Package
The TF-ENET-B package is delivered in a soft pouch with a foam insert.
TF-ENET-B Standard supplied items include:
- Main Board
- 50 Ω Terminator (6)
- 6” RJ45 short cable (1)
- Jumpers (28)
- 18” SMA to SMA cables (2)
- BNC to SMA adapters (2)
10
Figure 1. TF-ENET-B test fixture package
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Ethernet Test Fixture Sections
QPHY-ENET Software Option
Figure 2. TF-ENET-B test fixture board sections
10BT w & w/o Model section (A)
1000Base-T Jitter section (B)
Common Mode Voltage Output section (C)
1000BT Template Disturbing Signal Tests section (D)
Return Loss Measurement section (E)
Jitter Master/Slave Test section (F) (for Differential Probe)
Differential Return Loss section (G)
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TEST ITEM
TF-
ENET
-B section
Jitter
A B C D E F G
1000BASE-T
MODE 1, 4 with Disturber
MODE 1, 4 without Disturber
MODE 2: MASTER JITTER with TX_TCLK
MODE 3: SLAVE JITTER with TX_TCLK
MODE 3: MASTER/SLAVE JITTER without TX_TCLK
COMMON MODE OUTPUT VOLTAGE
100BASE-TX
UTP DIFFERENTIAL OUTPUT VOLTAGE
OVERSHOOT
SIGNAL AMPLITUDE SYMMETRY
RISETIME BASE TO UPPER
FALLTIME UPPER TO BASE
RISETIME LOWER TO BASE
FALLTIME BASE TO LOWER
RISE/FALL TIME SYMMETRY
DUTY CYCLE DISTORTION
JITTER
TWISTED-PAIR ACTIVE OUTPUT INTERFACE TEMPLATE
10BASE-T
PEAK DIFFERENTIAL OUTPUT VOLTAGE
HARMONICS
INTERNAL/EXTERNAL MAU NORMAL
INTERNAL/EXTERNAL MAU INVERTED
100 Ω: TP_IDL & LINK PULSE*
LOAD 1: TP_IDL & LINK PULSE*
LOAD 2: TP_IDL & LINK PULSE*
OUTPUT TIMING JITTER*
8BT OUTPUT TIMING JITTER*
8.5BT OUTPUT TIMING JITTER*
COMMON MODE OUTPUT VOLTAGE
*WITH & WITHOUT TWISTED-PAIR MODEL
X X
X
X
X X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Test
Cable
Link
Partner
AWG
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Table 1. Test Supported by TF-ENET-B Test Fixture
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QPHY-ENET Software Option
QualiPHY Compliance Test Platform
QualiPHY is LeCroy’s unique compliance test framework which leads the user through the compliance tests.
QualiPHY displays connection diagrams to ensure tests run properly, automates the oscilloscope setup, and
generates full compliance reports.
QPHY-ENET (DSO option) can be used without QualiPHY if each compliance test is executed manually.
However, QualiPHY makes QPHY-ENET easy and fast. QualiPHY is designed to use the TF-ENET-B test fixture
without using probes.
The LeCroy QPHY-ENET package displays all parameters for each measurement on the instrument screen along
with pass/fail indicators and the appropriate waveforms.
The QualiPHY software application automates the test and report generation.
QPHY-ENET Operator’s Manual Rev G
Figure 3. Report menu in QualiPHY General Setup
13
See the QualiPHY Operator’ s Manual for more information on how to use the QualiPHY framework.
Figure 4. The Test Report includes a summary table with links to the detailed test results
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INSTALLATION
Oscilloscope Option Key Installation
An option key must be purchased to enable the QPHY-ENET option. Call LeCroy Customer Support to place an
order and receive the code.
Enter the key and enable the purchased option as follows:
1. From the oscilloscope menu select Utilities Utilities Setup
2. Select the Options tab and click the Add Key button.
3. Enter the Key Code using the on-screen keyboard.
4. Restart the oscilloscope to activate the option after installation.
Typical (Recommended) Configuration
QualiPHY software can be executed from the oscilloscope or from a host computer. The first step is to install
QualiPHY, see the QualiPHY Operator’s Manual for installation instructions.
LeCroy recommends running QualiPHY on an oscilloscope equipped with Dual Monitor Display capability (Option
DMD-1 for oscilloscopes where this is not standard). This allows the waveform and measurements to be shown
on the oscilloscope LCD display while the QualiPHY application and test results are displayed on a second
monitor.
By default, the oscilloscope appears as a local host when QualiPHY is executed in the oscilloscope. Follow the
steps under XOscilloscope SelectionX (as follows) and check that the IP address is 127.0.0.1.
Remote (Network) Configuration
It is also possible to install and run QualiPHY on a host computer, controlling the oscilloscope with a Network/LAN
Connection.
The oscilloscope must already be configured, and an IP address (fixed or network-assigned) must already be
established.
Oscilloscope Selection
Set up the oscilloscope using QualiPHY over a LAN (Local Area Network) by doing the following:
1. Make sure the host computer is connected to the same LAN as the oscilloscope. If unsure, contact
your system administrator.
2. From the oscilloscope menu, select Utilities Utilities Setup
3. Select the Remote tab.
4. Verify the oscilloscope has an IP address and the control is set to TCP/IP.
5. Run QualiPHY in the host computer and click the General Setup button.
6. Select the Connection tab.
7. Enter the IP address from step 4 (previous).
8. Click the Close button.
QualiPHY is now ready to control the oscilloscope.
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QualiPHY tests the oscilloscope connection after clicking the Start button. The system prompts you if there is a
connection problem. QualiPHY’s Scope Selector function can also be used to verify the connection. Please refer
to the QualiPHY Operator’s Manual for explanations on how to use Scope Selector and other QualiPHY
functions.
Connecting the oscilloscope to the Device Under Test (DUT)
The most accurate method of attaching the oscilloscope to the Device Under Test is by directly connecting the
fixture to the oscilloscope channels using a pair of SMA cables. The connections to the oscilloscope should be
made with good quality SMA cables of equal length. If the tests are being performed on a WavePro or
WaveRunner oscilloscope (which has only BNC connections) a SMA to BNC adaptor is required for each
channel. See the Cable Deskewing section of this manual for the calibration procedure.
Accessing the QPHY-ENET Software using QualiPHY
This section provides a basic overview of QualiPHY’s capabilities. Please refer to the QualiPHY Operator’s
Manual for detailed information.
Access the QPHY-ENET software using the following steps:
1. Wait for the oscilloscope to start and to have its main application running.
2. Launch QualiPHY from the Analysis menu if installed on the oscilloscope or,
3. Launch QualiPHY from the desktop icon if installed on a host computer.
4. From the QualiPHY main window (as follows), select Standard, then ENET (IEEE 802) from the pop-up
menu (if not already selected). If you check the Pause on Failure box (circled) the system prompts to
retry the measure whenever it fails.
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Figure 5. QualiPHY main menu and compliance test Standard selection menu
QPHY-ENET Operator’s Manual Rev G
5. Click the Configuration button in the QualiPHY main menu:
6. Select a configuration from the pop-up menu:
QPHY-ENET Software Option
Figure 6. QualiPHY configuration selection menu
7. Click Start.
8. Follow the pop-up window prompts.
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Customizing QualiPHY
The predefined configurations in the Configuration screen cannot be modified. However, you can create your
own test configurations by copying one of the standard test configurations and making modifications. A
description of the test is also shown in the description field when selected.
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Figure 7. QualiPHY test item selection menu
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QPHY-ENET Software Option
Once a custom configuration is defined, script variables and the test limits can be changed by using the Variable
Setup and Limits Manager from the Edit/View Configuration window.
QPHY-ENET Operator’s Manual Rev G
Figure 8. Variable Setup and Limits Manager windows
19
QualiPHY-ENET Operation
After pressing Start in the QualiPHY menu, a pop-up connection diagram and dialog box is shown to help set up
the test QualiPHY also instructs to change test signal mode (when necessary) with the QualiPHY pop-up
message box shown as follows.
Figure 9. Start button
Figure 10. Example of pop-up message box
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Figure 11. Example of pop-up connection diagram and dialog box
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QPHY-ENET Software Option
1000Base-T A, B, C or D Pair Selection
In the 1000Base-T test, a pop-up menu asks if the user is testing all 4 pairs of transmission lines.
If selecting No, the user is then prompted for each pair individually. This allows the user to only test the selected
pairs.
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OSCILLOSCOPE OPERATION
This topic explains how to operate the oscilloscope manually. All of the following steps explained are automated
when using QualiPHY.
Although the oscilloscope settings can be changed at any time, it is not recommended to do so while a QualiPHY
script configuration is running. Doing so can modify the measurement and give erroneous report results.
The main menu (pictured as follows) is shown at the bottom of the oscilloscope screen. The four buttons on the
left (10Base-T, 100Base-TX, 1000Base-T, and OFF) provide choices for the test standard.
Figure 12. ENET Main Menu
If the Ethernet Tests dialog is closed, it can be redisplayed in its most recent state by selecting Ethernet Tests
from the Analysis menu or by touching the ENET waveform descriptor label at the bottom-left of the screen:
The name in the title bar of the descriptor label indicates the measurement waveform. For the previous case, the
descriptor label is E10Dta.
Note: QualiPHY hides the dialog at the beginning of each script. This allows the best resolution for screen-shots to be incorporated on reports.
If the user chooses to redisplay the dialog, the screen–shots in the report are smaller.
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Source selection fields are displayed on the right side of the menu. The TF-ENET-B fixture is designed to use 2
SMA cables to ensure the best signal quality. The Differential Data on 2 Channels checkbox sets the
oscilloscope to use two channels to probe the differential pair.
Set C2 as Source for + Data and C3 as Source for - Data. Two controls for master TX_TCLK and slave
TX_TCLK are used for the 1000Base-T mode 2 and mode 3 jitter tests, and are grayed out otherwise.
When a differential probe is used, select the channel for the probe connection in the Source for + Data field.
The following topics describe the use of the ENET software option for testing 10Base-T, 100Base-TX, and
1000Base-T signal types.
QualiPHY automates most of the steps. Pop-up messages appear when specific actions must be done by the
user and a report is generated at the end of the compliance test.
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10Base-T Tests
The required tests for the 10Base-T signal type are pulse mask, voltage level, and jitter. The requirements are
given in the IEEE 802.3-2005 standard (clause 14). The mask test requires the use of a “Twisted Pair Model,”
which effectively is a low-pass filter modeling the effect of transmitting the signal over a standard CAT5 cable.
This Twisted Pair Model is available in section A of TF-ENET-B from LeCroy.
Please refer to the test list in the 10 Base-T IEEE 802.3-2005 section of this manual.
Run the full set of 10Base-T tests by choosing the 10BASE-T All tests configuration in QualiPHY.
If the test needs to be done manually, use the following procedure:
1. From the menu bar, select Analysis Ethernet Tests
2. Touch the 10Base-T button on the left side of the menu to select the 10Base-T test mode.
The TF-ENET-B fixture allows for connecting each wire in the pair to a separate channel. Use the fixture section A
in the TF-ENET-B fixture set (XFigure 13X, as follows) to probe the signal using two channels. The test loads are
embedded in TF-ENET-B Fixture. Installing and removing Jumpers allows you to change test loads. (XTable 2X).
The 10Base-T transmitter is tested at the output of the Media Access Unit (MAU). This connection is made using
an RJ45 twisted pair connector. The MAU can be internal or external to the transmitter; and there are different
requirements for each type of MAU. The ENET software provides separate masks for each type of MAU to
accommodate these different requirements.
The 10Base-T test area of the TF-ENET-B also allows for devices to be tested using a link partner. See the Link
Partner Testing for 10Base-T & 100Base-TX section of this manual for more details.
Mode Install Jumper Remove Jumper
With TPM J1, J6, J14, J16 J7, J8, J9, J10
Without TPM J7, J8, J9, J10 J1, J6, J14, J16
100 Ω J24, J25 J20, J21, J22, J23
LOAD 1 J20, J21 J22, J23, J24, J25
LOAD 2 J22, J23 J20, J21, J24, J25
Figure 13. Section A 10Base-T test area Table 2. 10Base-T section A jumper setting
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QPHY-ENET Operator’s Manual Rev G
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