Rohde&Schwarz RTO-K81, RTO6-K81, RTP-K81, RTP-K83 User Manual

R&S®RTO-K81, R&S®RTO6-K81, R&S®RTP-K81/-K83
PCIe Compliance Test User Manual
(=QFñ2)
This manual describes the PCIe compliance test procedures with the following options:
R&S®RTO-K81 (1326.0920.02) - PCIe 1.1
R&S®RTO6-K81 (1801.6964.02) - PCIe 1.1 / 2.0
R&S®RTP-K81 (1337.8885.02) - PCIe 1.1 / 2.0
R&S®RTP-K83 ( 1800.6954.02) - PCIe 1.1 / 2.0 / 3.0
The tests require the R&S ScopeSuite software.
The software contained in this product uses several valuable open source software packages. For information, see the "Open
Source Acknowledgment" document, which is available for download from the R&S RTO/RTO6/RTP product page at http://
www.rohde-schwarz.com/product/rto.html > "Software".
Rohde & Schwarz would like to thank the open source community for their valuable contribution to embedded computing.
© 2021 Rohde & Schwarz GmbH & Co. KG
Mühldorfstr. 15, 81671 München, Germany
Phone: +49 89 41 29 - 0
Email: info@rohde-schwarz.com
Internet: www.rohde-schwarz.com
Subject to change – data without tolerance limits is not binding.
R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.
Trade names are trademarks of the owners.
1333.2299.02 | Version 05 | R&S®RTO-K81, R&S®RTO6-K81, R&S®RTP-K81/-K83
The following abbreviations are used throughout this manual: R&S®RTO is abbreviated as R&S RTO, R&S®RTP is abbreviated as
R&S RTP and R&S®ScopeSuite is abbreviated as R&S ScopeSuite.
R&S®RTO-K81, R&S®RTO6-K81, R&S®RTP-K81/-K83

Contents

1 R&S ScopeSuite Overview....................................................................5
2 Preparing the Measurements................................................................7
2.1 Test Equipment..............................................................................................................7
2.2 Installing Software and License.................................................................................. 8
2.3 Setting Up the Network.................................................................................................8
2.4 Starting the R&S ScopeSuite....................................................................................... 9
2.5 Connecting the R&S RTO/RTO6/RTP.......................................................................... 9
2.6 Connecting the Arbitrary Waveform Generator........................................................11
2.7 Report Configuration.................................................................................................. 12
3 Performing Tests..................................................................................14
Contents
3.1 Starting a Test Session...............................................................................................14
3.2 Configuring the Test................................................................................................... 15
3.2.1 General Test Settings....................................................................................................16
3.2.2 PCIe Test Configuration................................................................................................ 18
3.3 Getting Test Results....................................................................................................21
4 Add-in Card Tests................................................................................ 22
4.1 Starting Add-in Card Tests......................................................................................... 22
4.2 PCIe 1.1 / PCIe 2.0....................................................................................................... 22
4.2.1 Signal Quality Test........................................................................................................ 22
4.3 PCIe 3.0........................................................................................................................ 24
4.3.1 Signal Quality Test........................................................................................................ 24
4.3.2 Tx Equalization Presets................................................................................................ 26
5 System Board Tests.............................................................................29
5.1 Starting System Board Tests..................................................................................... 29
5.2 PCIe 1.1 / PCIe 2.0....................................................................................................... 29
5.2.1 Signal Quality Test........................................................................................................ 29
5.2.2 Reference Clock Tests.................................................................................................. 31
5.3 PCIe 3.0........................................................................................................................ 36
5.3.1 Signal Quality Test........................................................................................................ 37
5.3.2 Reference Clock Tests.................................................................................................. 39
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5.3.3 Tx Equalization Presets................................................................................................ 41
6 Receiver Tests...................................................................................... 42
6.1 Starting Receiver Tests...............................................................................................42
6.2 Signal Quality Test...................................................................................................... 42
6.2.1 Test Equipment............................................................................................................. 42
6.2.2 Performing the Tests..................................................................................................... 42
6.2.3 Purpose.........................................................................................................................43
6.2.4 Test Setup..................................................................................................................... 43
6.2.5 Measurements.............................................................................................................. 44
7 Transmitter Tests................................................................................. 45
7.1 Starting Transmitter Tests..........................................................................................45
7.2 PCIe 1.1 / PCIe 2.0....................................................................................................... 45
Contents
7.2.1 Signal Quality Test........................................................................................................ 45
7.2.2 Common Mode Output Voltage Test............................................................................. 47
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1 R&S ScopeSuite Overview

The R&S ScopeSuite software is used with R&S RTO/RTO6/RTP oscilloscopes. It can be installed on a test computer or directly on the oscilloscope. For system require­ments, refer to the Release Notes.
R&S ScopeSuite Overview
The R&S ScopeSuite main panel has several areas:
"Settings": connection settings to oscilloscope and other instruments also default report settings
"Compliance Tests": selection of the compliance test
"Demo": accesses demo test cases that can be used for trying out the software without having a connection to an oscilloscope
"Help": opens the help file, containing information about the R&S ScopeSuite con­figuration
"About": gives information about the R&S ScopeSuite software
"Tile View": allows a personalization of the compliance test selection You can configure which tests are visible in the compliance test section and which are hidden, so that only the ones you use are displayed.
► To hide a test from the "Compliance Tests" view, do one of the following:
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a) Right-click on the compliance test you want to hide.
The icon of the test changes, see Figure 1-1. Now with a left click you can hide the test.
Figure 1-1: Unpin icon
b) Click on "Title View" to show a list of the available test cases. By clicking a test
case in the show list, you can pin/unpin it from the main panel.
R&S ScopeSuite Overview
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2 Preparing the Measurements

2.1 Test Equipment

PCIe 1.1 / PCIe 2.0 Test Equipment
For PCIe compliance tests, the following test equipment is needed:
R&S RTO/RTO6/RTP oscilloscope with at least 6 GHz bandwidth, 2 channels and 20 GS/s available
Probes/cables:
Two SMP to SMA cables or
Two single-ended probes with at least 6GHz bandwidth bandwidth or
One differential probe with at least 6GHz bandwidth bandwidth
R&S RTO/RTO6/RTP-K81 PCIe compliance test option (required option, installed on the oscilloscope)
Recommended test fixture:
For Add-In card testing: PCI Express Compliance Base Board (CBB2.0) from
PCI-SIG
For System Board testing: PCI Express Compliance Load Board (CLB2.0) from
PCI-SIG
The free-of-charge R&S ScopeSuite software, which can be installed on a com­puter or directly on the oscilloscope.
Preparing the Measurements
Test Equipment
PCIe 3.0 Test Equipment
For PCIe compliance tests, the following test equipment is needed:
R&S RTP oscilloscope with at least 16 GHz bandwidth, 2 channels and 40 GS/s available
Probes/cables:
Two SMP to SMA cables or
Two single-ended probes with at least 6GHz bandwidth bandwidth or
One differential probe with at least 6GHz bandwidth bandwidth
Two R&S RTP-ZMA40 Amplifier probe tips.
R&S RTP -K83 PCIe compliance test option (required option, installed on the oscil­loscope)
Recommended test fixture:
For Add-In card testing: PCI Express Compliance Base Board (CBB3.0) from
PCI-SIG
For System Board testing: PCI Express Compliance Load Board (CLB3.0) from
PCI-SIG
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The free-of-charge R&S ScopeSuite software, which can be installed on a com­puter or directly on the oscilloscope.

2.2 Installing Software and License

The preparation steps are performed only once for each computer and instrument that are used for testing.
Uninstall older versions of the R&S ScopeSuite
If an older version of the R&S ScopeSuite is installed, make sure to uninstall the old version before you install the new one. You can find the version number of the current installation in "Help" menu > "About". To uninstall the R&S ScopeSuite, use the Win­dows " Control Panel" > "Programs".
For best operation results, we recommend that the installed firmware versions of the R&S ScopeSuite and the oscilloscope are the same.
Preparing the Measurements
Setting Up the Network
To install the R&S ScopeSuite
1. Download the latest R&S ScopeSuite software from the "Software" section on the Rohde & Schwarz R&S RTO/RTO6/RTP website:
www.rohde-schwarz.com/product/rtp.html www.rohde-schwarz.com/product/rto.html
2. Install the R&S ScopeSuite software:
On the computer that is used for testing, or
On the R&S RTO/RTO6/RTP.
For system requirements, refer to the Release Notes.
To install the license key on the R&S RTO/RTO6/RTP
► When you got the license key of the compliance test option, enable it on the oscil-
loscope using [Setup] > "SW Options". For a detailed description, refer to the R&S RTO/RTO6/RTP user manual, chapter "Installing Options", or to the online help on the instrument.

2.3 Setting Up the Network

If the R&S ScopeSuite software runs on a test computer, the computer and the testing oscilloscope require a LAN connection.
There are two ways of connection:
LAN (local area network): It is recommended that you connect to a LAN with DHCP server. This server uses the Dynamic Host Configuration Protocol (DHCP) to assign all address information automatically.
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Preparing the Measurements
Connecting the R&S
If no DHCP server is available, or if the Tabor WX2182B or WX2182C is used for automatic testing, assign fixed IP addresses to all devices.
Direct connection of the instruments and the computer or connection to a switch using LAN cables: Assign fixed IP addresses to the computer and the instruments and reboot all devices.
To set up and test the LAN connection
1. Connect the computer and the instruments to the same LAN.
2. Start all devices.
3. If no DHCP server is available, assign fixed IP addresses to all devices.
4. Ping the instruments to make sure that the connection is established.
5. If VISA is installed, check if VISA can access the instruments.
a) Start VISA on the test computer. b) Validate the VISA address string of each device.
See also:
Chapter 2.5, "Connecting the R&S RTO/RTO6/RTP", on page 9
RTO/RTO6/RTP

2.4 Starting the R&S ScopeSuite

To start the R&S ScopeSuite on the test computer or on the oscilloscope:
► Double-click the R&S ScopeSuite program icon.
To start the R&S ScopeSuite on the instrument, in the R&S RTO/RTO6/RTP firmware:
► In the "Apps" dialog, open the "Compliance" tab.

2.5 Connecting the R&S RTO/RTO6/RTP

If the R&S ScopeSuite is installed directly on the instrument, the software detects the R&S RTO/RTO6/RTP firmware automatically, and the "Oscilloscope" button is not available in the R&S ScopeSuite.
If the R&S ScopeSuite software runs on a test computer, the computer and the testing oscilloscope require a LAN connection, see Chapter 2.3, "Setting Up the Network", on page 8. The R&S ScopeSuite software needs the IP address of the oscilloscope to establish connection.
1. Start the R&S RTO/RTO6/RTP.
2. Start the R&S ScopeSuite software.
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3. Click "Settings" > "Oscilloscope".
Preparing the Measurements
Connecting the R&S RTO/RTO6/RTP
4. Enter the IP address of the oscilloscope. To obtain the IP address: press the Rohde & Schwarz logo at the top-right corner of the oscilloscope's display.
5. Click "Get Instrument Information".
The computer connects with the instrument and gets the instrument data.
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If the connection fails, an error message is shown.

2.6 Connecting the Arbitrary Waveform Generator

Automatic test execution is possible with all instruments that are listed in the R&S Sco­peSuite, in the "Instrument Settings" dialog box. In automatic mode, the R&S Scope­Suite configures the instrument and ensures that the AWG sends the required wave­forms. Automatic mode requires a LAN connection and the installation of a VISA imple­mentation (R&S VISA, see www.rohde-schwarz.com/rsvisa) on the computer that is running the R&S ScopeSuite. If the R&S ScopeSuite is installed on the R&S RTO/ RTO6/RTP, no installation is needed because VISA is already installed on the instru­ment. If the Tabor WX2182B or WX2182C is used for automatic testing, fixed IP addresses are required.
For manual test execution, it is recommended to use one of the listed AWGs, but you can also use another AWG. In manual mode, you connect the AWG to the test board and configure the instrument manually. VISA is not required. The R&S ScopeSuite uses VISA if it is installed, otherwise it uses the VXI-11 protocol.
Preparing the Measurements
Connecting the Arbitrary Waveform Generator
To configure the arbitrary waveform generator for automatic testing
1. Connect the computer and the AWG.
2. Set up the LAN connection. See Chapter 2.3, "Setting Up the Network", on page 8.
3. In the R&S ScopeSuite, click "Instruments". Alternatively, you can select the "Instrument" tab in the test case configuration dia­log.
4. Click the "AWG" tab.
5. Select "Operating mode" = "Automatic".
6. Select a supported "AWG Type" and enter its IP address. For a list of the supported AWGs, see chapter "Test Equipment".
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Preparing the Measurements
Report Configuration
7. Click "Get Instrument Information".
The computer or R&S RTO/RTO6/RTP connects with the instrument and retrieves the instrument data.
8. If the connection to the arbitrary waveform generator failed, check if the IP address is assigned correctly.
To configure the AWG for manual testing
► In the "AWG" tab, enable the "Manual" operating mode.

2.7 Report Configuration

In the "Report Configuration" menu, you can select the format of the report and the details to be included in the report. You can also select an icon that is displayed in the upper left corner of the report.
Also, you can enter common information on the test that is written in the "General Infor­mation" section of the test report.
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Preparing the Measurements
Report Configuration
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3 Performing Tests

3.1 Starting a Test Session

Performing Tests
Starting a Test Session
After you open a compliance test, the "Session Selection" dialog appears. In this dia­log, you can create new sessions, open or view existing report.
The following functions are available for handling test sessions:
Function Description
"Add" Adds a new session
"Open" Opens the selected session
"Remove" Removes the selected session
"Rename" Changes the "Session Name"
"Comment" Adds a comment
"Show report" Generates a report for the selected session
To add a test session
1. In the R&S ScopeSuite window, select the compliance test.
2. In the "Session Selection" dialog press "Add".
3. If necessary change the "Session Name"
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To open a test session
1. In the R&S ScopeSuite window, select the compliance test.
2. In the "Session Selection" dialog, select the session you want to open and double click on it. Alternatively, select the session and press "Open".
To show a report for a test session
1. In the R&S ScopeSuite window, select the compliance test.
2. In the "Session Selection" dialog, select the session you want the report for and press "Show report".

3.2 Configuring the Test

Performing Tests
Configuring the Test
1. In the R&S ScopeSuite window, select the compliance test to be performed:
"PCIe"
2. Open a test session, see Chapter 3.1, "Starting a Test Session", on page 14.
3. Adjust the "Properties" settings for the test cases you want to perform.
4. Click "Limit Manager" and edit the limit criteria, see Chapter 3.2.1.1, "Limit Man-
ager", on page 17.
5. If you want to use special report settings the "Report Config" tab to define the for­mat and contents of the report. Otherwise the settings defined in "RSScopeSuite" > "Settings" > "Report" are used. See Chapter 2.7, "Report Configuration", on page 12.
6. Click "Test Checked"/"Test Single" and proceed as described in the relevant test case chapter.
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3.2.1 General Test Settings

Performing Tests
Configuring the Test
Each session dialog is divided into several sections:
"Properties": shows the settings that can be made for the test case selected on the left side of the dialog. You can differentiate between the "All" and the sub test prop­erties In the "All" > "Properties" tab you can configure the settings for all test cases in the current session. Once you change and save a setting in this tab, the changes will be done for all test in the sessions. At the same time, there will be a special mark­ing for the functions that have different settings for different sub tests.
"Limit Manager": sets the measurement limits that are used for compliance testing, see Chapter 3.2.1.1, "Limit Manager", on page 17.
"Results": shows an overview of the available test results for this session.
"Instruments": defines instruments settings for connecting to external devices, that are specific for this test session. When a session is first created the global settings ("RSScopeSuite" > "Settings" > "Instruments") are copied to the session. This "Instruments" tab can be used to change those copied defaults.
"Report Config": defines the format and contents of the report for this session. When a session is first created the global settings ("RSScopeSuite" > "Settings" > "Report") are copied to the session. This "Report Config" tab can be used to change those copied defaults.
"Test Checked"/ "Test Single": starts the selected test group.
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3.2.1.1 Limit Manager
The "Limit Manager" shows the measurement limits that are used for compliance test­ing.
Each limit comprises the comparison criterion, the unit, the limit value A, and a second limit value B if the criterion requires two limits.
You can set the values to defaults, change the values in the table, export the table in xml format, or import xml files with limit settings.
► Check and adjust the measurement limits.
Performing Tests
Configuring the Test
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Performing Tests
Configuring the Test

3.2.2 PCIe Test Configuration

The test configuration consists of some test-specific configuration settings.
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Performing Tests
Configuring the Test
SigTest
Displays the version of the SigTest software that is used for the test.
Included in the installation is 3.2.0. The following table gives an overview of the com­patibility with the SigTest versions:
Table 3-1: Supported SigTest versions
Version Standard Installed with Scope-
Suite
3.2.0 PCIe 3 Yes Tested on Windows 10
3.2.0.3 PCIe 3 No Does not work
4.0.23.2 PCIe 3 No Supported
4.0.52 PCIe 4 No Supported
Notes
version 1809.
Older Windows 10 ver­sions (e.g. Windows 10 version 1703) may show a crash popup on exit.
You are able to select a custom SigTest by editing the SigTestConfig.xml file in:
C:\ProgramData\Rohde-Schwarz\RSScopeSuite\4.80.0\ WorkingDirectory.
You can set the required version in the PCIe <UserVer>...</UserVer> field.
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Probe Type
Selects the probes used for the test setup. You can select SMA cables, single-ended or differential probes.
Channel Skew
Sets the channel skew for the D+ and D- channel. The skew compensates signal prop­agation differences between channels caused by the different length of cables, probes, and other sources.
Data Lane
Selects the data lane under test.
Performing Tests
Configuring the Test
Reference Clock
Selects the type of reference clock of the DUT. You can select between a clean clock or a spread-spectrum clocking (SSC).
De-Emphasis Mode
Selects between the "-3.5 dB" and "-6 dB" de-emphasis mode of the DUT.
Power Level
Selects between the "Full Power" and "Low Power" mode of the DUT.
Preset numbers
Selects the preset numbers for the "System Board "> "Tx Equalization Presets (4.3.3.5.2)". They give a coarser control over the Tx equalization resolution.
Export Waveforms
Enables you to export a waveform. You can later load the waveforms to run the tests in the offline mode, see "Offline Execution" on page 20.
You can define an export directory, or use the default one:
MyDocuments\Rohde-Schwarz\RSScopeSuite\<Version>\Waveforms\ <ComplianceTest>\<SessionType>\<SessionName>
For example:
MyDocuments\Rohde-Schwarz\RSScopeSuite\4.80.0\Waveforms\PCIe\ Add-in Card(Tx)_20201030_144116
Offline Execution
If enabled, allows you to use exported waveforms as a source for the execution of the compliance test.
You can select one waveform for each needed signal.
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3.3 Getting Test Results

For each test, the test data - report, diagrams and waveform files - is saved in the fol­lowing folder:
%ProgramData%\Rohde-Schwarz\RSScopeSuite2\Sessions\PCIe\ <Session_Name>
If you resume an existing session, new measurements are appended to the report, new diagrams and waveform files are added to the session folder. Existing files are not deleted or replaced. Sessions data remain until you delete them in the "Results" tab of the session.
The report format can be defined in "RSScopeSuite" > "Settings" > "Report" for all compliance tests (see also Chapter 2.7, "Report Configuration", on page 12). If you want to use special report settings for a session, you can define the format and con­tents of the report in the "Report Config" tab of the session.
All test results are listed in the "Results" tab. Reports can be provided in PDF, MSWord, or HTML format. To view and print PDF reports, you need a PDF viewer, for example, the Acrobat Reader.
Performing Tests
Getting Test Results
The test report file can be created at the end of the test, or later in the "Session Selec­tion" dialog.
To show a test report
1. In the R&S ScopeSuite window, select the compliance test to be performed.
2. Select the session name in the "Session Selection" dialog and click "Show report".
The report opens in a separate application window, depending on the file format. You can check the test results and print the report.
To delete the results, diagrams and waveform files of a session
1. In the "Session Selection" dialog select the session and open it.
2. In the "Results" tab, select the result to be deleted.
3. Click "Remove".
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4 Add-in Card Tests

4.1 Starting Add-in Card Tests

Before you run the test, complete the following actions:
Initial setup of the equipment, see Chapter 2.2, "Installing Software and License", on page 8
LAN connection of the oscilloscope and the computer running the R&S Scope­Suite, see Chapter 2.5, "Connecting the R&S RTO/RTO6/RTP", on page 9
1. Select "PCIe" in the R&S ScopeSuite start window.
2. In the "Session Selection" dialog, set "Select Type" > "Add-in Card (Tx)".
3. Add a new test session and open it, see Chapter 3.1, "Starting a Test Session", on page 14.
Add-in Card Tests
PCIe 1.1 / PCIe 2.0
4. Check the test configuration settings and adjust, if necessary. See:
Chapter 3.2.2, "PCIe Test Configuration", on page 18
Chapter 3.2.1.1, "Limit Manager", on page 17
5. Select/check the test cases you want to run and click "Test Single"/"Test checked".
6. A step-by step guide explains the following individual setup steps. When you have finished all steps of the step-by-step guide, the compliance test runs automatically.

4.2 PCIe 1.1 / PCIe 2.0

4.2.1 Signal Quality Test

4.2.1.1 Test Equipment
Table 4-1: Equipment for Signal Quality add-in card tests
Item Description, model Quantity
Rohde & Schwarz oscilloscope R&S RTO/ RTO6 /RTP with at least 6 GHz bandwidth and
(20 GS/s available)
Compliance Base Board
SMP to SMA cables Connected to SMP probing points on CBB 2
1
PCISIG Gen 2.0 Compliance Base Board (CBB) 1
1
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Item Description, model Quantity
DUT Add-In Card 1
We recommend PCI Express Compliance Base Board (CBB2.0) from PCI-SIG.
4.2.1.2 Performing the Tests
1. Start the test as described in Chapter 4.1, "Starting Add-in Card Tests", on page 22.
2. Select the "Signal Quality (4.3.3)" test case:
Add-in Card Tests
PCIe 1.1 / PCIe 2.0
3. Click "Test Single" to run only the selected test case. Click "Test Checked" to run all test cases that are checked on the tree.
4. Follow the instructions of the step-by step guide. When you have finished all steps, the compliance test runs automatically.
4.2.1.3 Purpose
This test verifies that the transmitter signal complies with the quality specifications in section 4.3.3 of the PCI Express Base Specification, REV. 1.1.
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4.2.1.4 Test Setup
The test requires the DUT to transmit the Compliance Pattern defined in section 4.2.8 (Base Specification). This is 640-bit Jitter test pattern designed to maximize data­dependent jitter.
These tests use PCI Express Compliance Base Board (CBB2.0) from PCI-SIG. The CBB test fixture provides SMP Probing Points for data lanes that are used to connect to the oscilloscope.
4.2.1.5 Measurements
This test does the following measurements described in table 4-5 at section 4.3.3 of PCI Express Base Specification, REV. 1.1 and Section 4.7.1 of the Card Electrome­chanical Specification, REV 1.1.
Mean Unit Interval (UI)
Data Rate
Template Tests
Min Eye Width (T
Median To Max Jitter (T
Differential Output Voltage (V
Total Jitter at BER-12 (PCIe 2.0 only)
Deterministic jitter (PCIe 2.0 only)
RMS jitter (PCIe 2.0 only)
)
TX-EYE
TX-EYEMEDIAN-to-MAXJITTER
TX-DIFFp-p
Add-in Card Tests
PCIe 3.0
)
)

4.3 PCIe 3.0

PCIe 3.0 compliance tests require option R&S RTP- K83.

4.3.1 Signal Quality Test

4.3.1.1 Test Equipment
Table 4-2: Equipment for Signal Quality add-in card tests
Item Description, model Quantity
Rohde & Schwarz oscilloscope R&S R&S RTP with at least 16 GHz bandwidth and (40
Compliance Base Board
SMP to SMA cables Connected to SMP probing points on CBB 2
1
1
GS/s available)
PCISIG Gen 3.0 Compliance Base Board (CBB) 1
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Item Description, model Quantity
DUT Add-In Card 1
We recommend PCI Express Compliance Base Board (CBB3.0) from PCI-SIG.
4.3.1.2 Performing the Tests
1. Start the test as described in Chapter 4.1, "Starting Add-in Card Tests", on page 22.
2. Select the "Signal Quality (4.3.3.13/ 4.3.3.13.1 )" test case:
Add-in Card Tests
PCIe 3.0
3. Click "Test Single" to run only the selected test case. Click "Test Checked" to run all test cases that are checked on the tree.
4. Follow the instructions of the step-by step guide. When you have finished all steps, the compliance test runs automatically.
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4.3.1.3 Purpose
This test verifies that the transmitter signal complies with the quality specifications in section 4.3.3.13/ 4.3.3.13.1 of the PCI Express Base Specification, REV. 3.0.
4.3.1.4 Test Setup
The test requires the DUT to transmit the Compliance Pattern defined in section 4.2.8 (Base Specification). This is 640-bit Jitter test pattern designed to maximize data­dependent jitter.
These tests use PCI Express Compliance Base Board (CBB3.0) from PCI-SIG. The CBB test fixture provides SMP Probing Points for data lanes that are used to connect to the oscilloscope.
4.3.1.5 Measurements
This test does the following measurements described in table 4-5 at section 4.3.3 of PCI Express Base Specification, REV. 3.0 and Section 4.7.1 of the Card Electrome­chanical Specification, REV 3.0.
Add-in Card Tests
PCIe 3.0
Mean Unit Interval (UI)
Data Rate
Template Tests
Min Eye Width

4.3.2 Tx Equalization Presets

4.3.2.1 Test Equipment
Table 4-3: Equipment for Signal Quality add-in card tests
Item Description, model Quantity
Rohde & Schwarz oscilloscope R&S R&S RTP with at least 16 GHz bandwidth and (40
Compliance Base Board
SMP to SMA cables Connected to SMP probing points on CBB 2
DUT Add-In Card 1
Signal generator (optional) R&S R&S RTP -B6 Option
1
1
GS/s available)
PCISIG Gen 3.0 Compliance Base Board (CBB) 1
1
SMP to SMA cable
We recommend PCI Express Compliance Base Board (CBB3.0) from PCI-SIG.
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4.3.2.2 Performing the Tests
1. Start the test as described in Chapter 4.1, "Starting Add-in Card Tests", on page 22.
2. Select the "Tx Equalization Presets (4.3.3.5.2)" test case:
Add-in Card Tests
PCIe 3.0
3. Click "Test Single" to run only the selected test case. Click "Test Checked" to run all test cases that are checked on the tree.
4. Follow the instructions of the step-by step guide. When you have finished all steps, the compliance test runs automatically.
4.3.2.3 Test Setup
The test requires the DUT to transmit the Compliance Pattern defined in section 4.2.8 (Base Specification). This is 640-bit Jitter test pattern designed to maximize data­dependent jitter.
These tests use PCI Express Compliance Base Board (CBB3.0) from PCI-SIG. The CBB test fixture provides SMP Probing Points for data lanes that are used to connect to the oscilloscope.
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4.3.2.4 Measurements
This test does the following measurements described in table 4-16 of section 4.3.3.5.2 of PCI Express Base Specification, REV. 3.0 and Section 4.7.1 of the Card Electrome­chanical Specification, REV 3.0.
P0-P10 De-emphasis
P0-P10 Preshoot
Add-in Card Tests
PCIe 3.0
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5 System Board Tests

5.1 Starting System Board Tests

Before you run the test, complete the following actions:
Initial setup of the equipment, see Chapter 2.2, "Installing Software and License", on page 8
LAN connection of the oscilloscope and the computer running the R&S Scope­Suite, see Chapter 2.5, "Connecting the R&S RTO/RTO6/RTP", on page 9
1. Select "PCIe" in the R&S ScopeSuite start window.
2. In the "Session Selection" dialog, set "Select Type" > "System Board".
3. Add a new test session and open it, see Chapter 3.1, "Starting a Test Session", on page 14.
System Board Tests
PCIe 1.1 / PCIe 2.0
4. Check the test configuration settings and adjust, if necessary. See:
Chapter 3.2.2, "PCIe Test Configuration", on page 18
Chapter 3.2.1.1, "Limit Manager", on page 17
5. Select/check the test cases you want to run and click "Test Single"/"Test checked".
6. A step-by step guide explains the following individual setup steps. When you have finished all steps of the step-by-step guide, the compliance test runs automatically.

5.2 PCIe 1.1 / PCIe 2.0

5.2.1 Signal Quality Test

5.2.1.1 Test Equipment
Table 5-1: Equipment for Signal Quality system board tests
Item Description, model Quantity
Rohde & Schwarz oscilloscope R&S RTO/ RTO6 /RTP with at least 6 GHz bandwidth and
(20 GS/s available)
Compliance load board
SMP to SMA cables Connected to SMP probing points on CLB 2
1
PCISIG Gen 2.0 Compliance Load Board (CLB) 1
1
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Item Description, model Quantity
DUT System board 1
We recommend PCI Express Compliance Load Board (CLB2.0) from PCI-SIG.
For details, refer to http://pcisig.com/pci-express-compliance-load-board-clb
5.2.1.2 Performing the Tests
1. Start the test as described in Chapter 5.1, "Starting System Board Tests", on page 29.
2. Select the "Signal Quality (4.3.3)" test case:
System Board Tests
PCIe 1.1 / PCIe 2.0
3. Click "Test Single" to run only the selected test case. Click "Test Checked" to run all test cases that are checked on the tree.
4. Follow the instructions of the step-by step guide. When you have finished all steps, the compliance test runs automatically.
5.2.1.3 Purpose
This test verifies that the transmitter signal complies with the quality requirements in section 4.3.3 of PCI Express Base Specification, REV. 1.1.
This group of test cases is typically performed on PCI Express motherboard.
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5.2.1.4 Test Setup
The test requires the DUT to transmit the Compliance Pattern defined in section 4.2.8 (Base Specification). This is 640 bit Jitter test pattern designed to maximize data dependent jitter.
These tests use PCI Express Compliance Load Board (CLB2.0) from PCI-SIG. The CLB test fixture provides SMP Probing Points for data lanes that are used to connect to the oscilloscope.
System Board Tests
PCIe 1.1 / PCIe 2.0
Refer to Compliance Load Board (CLB2.0) Test Fixture User’s Document for details.
5.2.1.5 Measurements
This test does following measurements described in table 4-5 at section 4.3.3 of PCI Express Base Specification, REV. 1.1 and Section 4.7.3 of the Card Electromechanical Specification, REV 1.1.
Mean Unit Interval (UI)
Data Rate
Template Tests
Min Eye Width (T
Median To Max Jitter (T
Differential Output Voltage (V
TX-EYE

5.2.2 Reference Clock Tests

5.2.2.1 Test Equipment
)
TX-EYEMEDIAN-to-MAXJITTER
TX-DIFFp-p
)
)
Table 5-2: Equipment for Reference Clock system board tests
Item Description, model Quantity
Rohde & Schwarz oscilloscope R&S RTO/ RTO6 /RTP with at least 6 GHz bandwidth and
(20 GS/s available)
Compliance Load Board
1
PCISIG Gen 2.0 Compliance Load Board (CLB) 1
1
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Item Description, model Quantity
SMP to SMA cable Connected to SMP probing points on CLB 2
DUT System board 1
We recommend PCI Express Compliance Load Board (CLB2.0) from PCI-SIG.
For details, refer to http://pcisig.com/pci-express-compliance-load-board-clb
5.2.2.2 Performing the Tests
1. Start the test as described in Chapter 5.1, "Starting System Board Tests", on page 29.
2. Select the "Reference Clock (1.3.2)" test case:
System Board Tests
PCIe 1.1 / PCIe 2.0
3. Click "Test Single" to run only the selected test case. Click "Test Checked" to run all test cases that are checked on the tree.
4. Follow the instructions of the step-by step guide. When you have finished all steps, the compliance test runs automatically.
5.2.2.3 Purpose
The purpose of Reference Clock tests is to verify various requirements specific to Ref­erence Clock under Rev 1.1 of the PCI Express Card Electromechanical Specification.
This group of test cases is typically performed on PCI Express motherboard.
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5.2.2.4 Test Setup
This group of tests uses PCI Express Compliance Load Board (CLB2.0) from PCI-SIG. The CLB test fixture provides Reference Clock SMP Probing Points that are used to connect the system reference clock to the oscilloscope.
Refer to Compliance Load Board (CLB2.0) Test Fixture User’s Document for details.
System Board Tests
PCIe 1.1 / PCIe 2.0
Channel 1 is connected to Ref Clk P and Channel 2 is connected to Ref Clk N.
5.2.2.5 Test Cases
Reference Clock tests consist of 7 test cases which perform related system reference clock test and measurement defined in Rev 1.1 of the PCI Express Card Electrome­chanical Specification.
Differential Input High Voltage - VIH
Purpose
The purpose of this test case is to verify the Differential Input High Voltage of reference clock is within the compliance limits. Refer to Section 2.1.3 of the Card Electromechan­ical Specification Rev. 1.1 for details.
Measurements
The software firstly commands R&S RTO/ RTO6 /RTP to generate a differential signal (REFCLK+ minus REFCLK-) of the reference clock via MATH function. Then a statis­tics measurement of High is performed over the differential clock signal. Avg value is used as test result.
The conformance range for VIH is greater than 150 mV.
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System Board Tests
PCIe 1.1 / PCIe 2.0
Differential Input Low Voltage - VIL
Purpose
The purpose of this test case is to verify the Differential Input Low Voltage of reference clock is within the compliance limits. Refer to Section 2.1.3 of the Card Electromechan­ical Specification Rev. 1.1 for details.
Measurements
The software firstly commands R&S RTO/ RTO6 /RTP to generate a differential signal (REFCLK+ minus REFCLK-) of the reference clock via MATH function. Then a statis­tics measurement of Low is performed over the differential clock signal. Avg value is used as test result. The conformance range for VIL is less than -150 mV.
Duty Cycle
Purpose
The purpose of this test case is to verify the Duty Cycle of reference clock is within the compliance limits. Refer to Section 2.1.3 of the Card Electromechanical Specification Rev. 1.1 for details.
Measurements
The software firstly commands R&S RTO/ RTO6 /RTP to generate a differential signal (REFCLK+ minus REFCLK-) of the reference clock via MATH function. Then a statis-
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tics measurement of Pos. Duty Cycle is performed over the differential clock signal. Avg value is used as test result.
The conformance range for Duty Cycle is greater than or equal to 40% and less than or equal to 60%.
Average Clock Period PPM
Purpose
The purpose of this test case is to verify the Average Clock Period of reference clock is within the compliance limits. Refer to Section 2.1.3 of the Card Electromechanical Specification Rev. 1.1 for details.
Measurements
The software firstly commands R&S RTO/ RTO6 /RTP to generate a differential signal (REFCLK+ minus REFCLK-) of the reference clock via MATH function. Then a statis­tics measurement of Period is performed over the differential clock signal. Avg value is recorded and sent to the software for Average Clock Period PPM calculation.
System Board Tests
PCIe 1.1 / PCIe 2.0
The conformance range for Average Clock Period is greater than or equal to -300 ppm and less than or equal to 2800 ppm.
Rising Edge Rate
Purpose
The purpose of this test case is to verify the Rising Edge Rate of reference clock is within the compliance limits. Refer to Section 2.1.3 of the Card Electromechanical Specification Rev. 1.1 for details.
Measurements
The software firstly commands R&S RTO/ RTO6 /RTP to generate a differential signal of the reference clock (REFCLK+ minus REFCLK-) via MATH function. Then the differ­ential clock signal is transferred to the software for post processing. The 300mV mea­surement window is centered on the differential zero crossing from -150mV to 150mV. Average rising edge rate of all cycles are used as test result.
The conformance range for Rising Edge Rate is greater than or equal to 0.6V/ns and less than or equal to 4.0V/ns.
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System Board Tests
PCIe 3.0
Differential Input High Voltage - VIH
Purpose
The purpose of this test case is to verify the Falling Edge Rate of reference clock is within the compliance limits. Refer to Section 2.1.3 of the Card Electromechanical Specification Rev. 1.1 for details.
Measurements
The software firstly commands R&S RTO/ RTO6 /RTP to generate a differential signal of the reference clock (REFCLK+ minus REFCLK-) via MATH function. Then the differ­ential clock signal is transferred to the software for post processing. The 300mV mea­surement window is centered on the differential zero crossing from -150mV to 150mV. An average of the falling edge rate of all cycles are used as test result.
The conformance range for Falling Edge Rate is greater than or equal to 0.6V/ns and less than or equal to 4.0V/ns.

5.3 PCIe 3.0

PCIe 3.0 compliance tests require option R&S RTP- K83.
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5.3.1 Signal Quality Test

5.3.1.1 Test Equipment
Table 5-3: Equipment for Signal Quality system board tests
Item Description, model Quantity
System Board Tests
PCIe 3.0
Rohde & Schwarz oscilloscope R&S R&S RTP with at least 16 GHz bandwidth and (40
Compliance load board
Probe and probe tip R&S RTP-ZM160 Modular probe
SMP to SMA cables Connected to SMP probing points on CLB 4
DUT System board 1
We recommend PCI Express Compliance Load Board (CLB 3.0) from PCI-SIG.
1
5.3.1.2 Performing the Tests
1. Start the test as described in Chapter 5.1, "Starting System Board Tests", on page 29.
2. Select the "Signal Quality (4.3.3.13 )" test case:
1
GS/s available)
PCISIG Gen 3.0 Compliance Load Board (CLB) 1
R&S RTP-ZMA140 amplifier probe tip
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System Board Tests
PCIe 3.0
3. Click "Test Single" to run only the selected test case. Click "Test Checked" to run all test cases that are checked on the tree.
4. Follow the instructions of the step-by step guide. When you have finished all steps, the compliance test runs automatically.
5.3.1.3 Purpose
This test verifies that the transmitter signal complies with the quality requirements in section 4.3.3.13 of PCI Express Base Specification, Rev. 3.0.
This group of test cases is typically performed on PCI Express motherboard.
5.3.1.4 Test Setup
The test requires the DUT to transmit the Compliance Pattern defined in section 4.2.8 (Base Specification). This is 640-bit Jitter test pattern designed to maximize data­dependent jitter.
These tests use PCI Express Compliance Load Board (CLB3.0) from PCI-SIG. The CLB test fixture provides SMP Probing Points for data lanes that are used to connect to the oscilloscope.
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Refer to Compliance Load Board (CLB3.0) Test Fixture User’s Document for details.
5.3.1.5 Measurements
This test does the following measurements described in table 4-5 at section 4.3.3 of PCI Express Base Specification, REV. 3.0 and Section 4.7.3 of the Card Electrome­chanical Specification, REV 3.0.
System Board Tests
PCIe 3.0
Mean Unit Interval (UI)
Data Rate
Template Tests
Min Eye Width

5.3.2 Reference Clock Tests

5.3.2.1 Test Equipment
Table 5-4: Equipment for Reference Clock system board tests
Item Description, model Quantity
Rohde & Schwarz oscilloscope R&S R&S RTP with at least 16 GHz bandwidth and (20
Compliance load board
SMP to SMA cable Connected to SMP probing points on CLB 2
DUT System board 1
We recommend PCI Express Compliance Load Board (CLB3.0) from PCI-SIG.
1
1
GS/s available)
PCISIG Gen 3.0 Compliance Load Board (CLB) 1
5.3.2.2 Performing the Tests
1. Start the test as described in Chapter 5.1, "Starting System Board Tests", on page 29.
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2. Select the "Reference Clock (4.3.8)" test case:
System Board Tests
PCIe 3.0
3. For spread spectrum clocking (SSC) reference clock tests, ensure that the SSC settings are activated through the system board's BIOS.
4. Click "Test Single" to run only the selected test case. Click "Test Checked" to run all test cases that are checked on the tree.
5. Follow the instructions of the step-by step guide. When you have finished all steps, the compliance test runs automatically.
5.3.2.3 Purpose
The purpose of Reference Clock tests is to verify various requirements specific to Ref­erence Clock under Rev 3.0 of the PCI Express Card Electromechanical Specification.
This group of test cases is typically performed on PCI Express motherboard.
5.3.2.4 Test Setup
This group of tests uses PCI Express Compliance Load Board (CLB3.0) from PCI-SIG. The CLB test fixture provides Reference Clock SMP Probing Points that are used to connect the system reference clock to the oscilloscope.
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Refer to Compliance Load Board (CLB3.0) Test Fixture User’s Document for details.
Channel 1 is connected to Ref Clk P and Channel 2 is connected to Ref Clk N.
5.3.2.5 Test Cases
Reference Clock (clean clock) consist of 2 test cases. Reference Clock (SSC) consist of 3 test cases. These perform related system reference clock test and measurement defined in Rev 3.0 of the PCI Express Card Electromechanical Specification.
System Board Tests
PCIe 3.0
RMS Refclk Jitter
SSC Frequency range
SSC deviation

5.3.3 Tx Equalization Presets

See Chapter 4.3.2, "Tx Equalization Presets", on page 26.
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6 Receiver Tests

6.1 Starting Receiver Tests

Before you run the test, complete the following actions:
Initial setup of the equipment, see Chapter 2.2, "Installing Software and License", on page 8
LAN connection of the oscilloscope and the computer running the R&S Scope­Suite, see Chapter 2.5, "Connecting the R&S RTO/RTO6/RTP", on page 9
1. Select "PCIe" in the R&S ScopeSuite start window.
2. In the "Session Selection" dialog, set "Select Type" > "Receiver".
3. Add a new test session and open it, see Chapter 3.1, "Starting a Test Session", on page 14.
Receiver Tests
Signal Quality Test
4. Check the test configuration settings and adjust, if necessary. See:
Chapter 3.2.2, "PCIe Test Configuration", on page 18
Chapter 3.2.1.1, "Limit Manager", on page 17
5. Select/check the test cases you want to run and click "Test Single"/"Test checked".
6. A step-by step guide explains the following individual setup steps. When you have finished all steps of the step-by-step guide, the compliance test runs automatically.

6.2 Signal Quality Test

6.2.1 Test Equipment

Table 6-1: Equipment for Signal Quality receiver tests
Item Description, model Quantity
Rohde & Schwarz oscilloscope R&S RTO/ RTO6 /RTP with at least 6 GHz bandwidth and
SMP to SMA cable Connected to SMP probing points on CLB 2
1
(20 GS/s available)
DUT The evaluation board 1

6.2.2 Performing the Tests

1. Start the test as described in Chapter 6.1, "Starting Receiver Tests", on page 42.
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2. Select the "Signal Quality (4.3.3)" test case:
Receiver Tests
Signal Quality Test
3. Click "Test Single" to run only the selected test case. Click "Test Checked" to run all test cases that are checked on the tree.
4. Follow the instructions of the step-by step guide. When you have finished all steps, the compliance test runs automatically.

6.2.3 Purpose

This test verifies that the receiver signal complies with the quality specifications in sec­tion 4.3.4 of PCI Express Base Specification, REV. 1.1.

6.2.4 Test Setup

The test requires the DUT to receive the Compliance Pattern defined in section 4.2.8 (Base Specification). This is 640-bit Jitter test pattern designed to maximize data­dependent jitter.
Receiver tests are done by probing the link as close as possible to the pins of the receiver device. The following figure shows the probing method.
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Figure 6-1: Probing with single-ended active probes
Receiver Tests
Signal Quality Test

6.2.5 Measurements

This test does following measurements described in table 4-5 at section 4.3.3 of PCI Express Base Specification, REV. 1.1
Mean Unit Interval (UI)
Data Rate
Template Tests
Min Eye Width (T
Median To Max Jitter (T
Differential Input Voltage (V
AC Peak Common Mode Input Voltage
Total Jitter at BER-12 (PCIe 2.0 only)
Deterministic jitter (PCIe 2.0 only)
RMS jitter (PCIe 2.0 only)
)
TX-EYE
TX-EYEMEDIAN-to-MAXJITTER
RX-DIFFp-p
)
)
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7 Transmitter Tests

7.1 Starting Transmitter Tests

Before you run the test, complete the following actions:
Initial setup of the equipment, see Chapter 2.2, "Installing Software and License", on page 8
LAN connection of the oscilloscope and the computer running the R&S Scope­Suite, see Chapter 2.5, "Connecting the R&S RTO/RTO6/RTP", on page 9
1. Select "PCIe" in the R&S ScopeSuite start window.
2. In the "Session Selection" dialog, set "Select Type" > "Transmitter".
3. Add a new test session and open it, see Chapter 3.1, "Starting a Test Session", on page 14.
Transmitter Tests
PCIe 1.1 / PCIe 2.0
4. Check the test configuration settings and adjust, if necessary. See:
Chapter 3.2.2, "PCIe Test Configuration", on page 18
Chapter 3.2.1.1, "Limit Manager", on page 17
5. Select/check the test cases you want to run and click "Test Single"/"Test checked".
6. A step-by step guide explains the following individual setup steps. When you have finished all steps of the step-by-step guide, the compliance test runs automatically.

7.2 PCIe 1.1 / PCIe 2.0

7.2.1 Signal Quality Test

7.2.1.1 Test Equipment
Table 7-1: Equipment for Signal Quality transmitter tests
Item Description, model Quantity
Rohde & Schwarz oscilloscope R&S RTO/ RTO6 /RTP with at least 6 GHz bandwidth and
(20 GS/s available)
SMP to SMA cable Connected to SMP probing points on CLB 2
DUT The evaluation board 1
1
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7.2.1.2 Performing the Tests
1. Start the test as described in Chapter 7.1, "Starting Transmitter Tests", on page 45.
2. Select the "Signal Quality (4.3.3)" test case:
Transmitter Tests
PCIe 1.1 / PCIe 2.0
3. Click "Test Single" to run only the selected test case. Click "Test Checked" to run all test cases that are checked on the tree.
4. Follow the instructions of the step-by step guide. When you have finished all steps, the compliance test runs automatically.
7.2.1.3 Purpose
This test verifies that the transmitter signal complies with the quality specifications in section 4.3.3 of PCI Express Base Specification, REV. 1.1.
7.2.1.4 Test Setup
The test requires the DUT to transmit the Compliance Pattern defined in section 4.2.8 (Base Specification). This is 640-bit Jitter test pattern designed to maximize data­dependent jitter.
The following figure shows the probing method for transmitter "Signal Quality" tests.
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Figure 7-1: Probing with SMA cables
7.2.1.5 Measurements
Transmitter Tests
PCIe 1.1 / PCIe 2.0
This test does following measurements described in table 4-5 at section 4.3.3 of PCI Express Base Specification, REV. 1.1
Mean Unit Interval (UI)
Data Rate
Template Tests
Min Eye Width (T
Median To Max Jitter (T
Differential Output Voltage (V
Rise/Fall Time (T
De-Emphasized Voltage Ratio (V
)
TX-EYE
TX-EYEMEDIAN-to-MAXJITTER
TX-DIFFp-p
TX-RISE,TTX-FALL
)
)
TX-DE-RATIO

7.2.2 Common Mode Output Voltage Test

7.2.2.1 Test Equipment
Table 7-2: Equipment for Common Mode Output Voltage transmitter tests
Item Description, model Quantity
)
)
Rohde & Schwarz oscilloscope R&S RTO/ RTO6 /RTP with at least 6 GHz bandwidth and
(20 GS/s available)
SMP to SMA cables Connected to SMP probing points on CBB 2
DUT The evaluation board 1
1
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7.2.2.2 Performing the Tests
1. Start the test as described in Chapter 7.1, "Starting Transmitter Tests", on page 45.
2. Select the "Common Mode Output Voltage (4.3.3)" test case:
Transmitter Tests
PCIe 1.1 / PCIe 2.0
3. Click "Test Single" to run only the selected test case. Click "Test Checked" to run all test cases that are checked on the tree.
4. Follow the instructions of the step-by step guide. When you have finished all steps, the compliance test runs automatically.
7.2.2.3 Purpose
This test verifies that the transmitter signal complies with the common mode voltage requirements described in section 4.3.3 of PCI Express Base Specification, REV. 1.1.
7.2.2.4 Test Setup
The test requires the DUT to transmit the Compliance Pattern defined in section 4.2.8 (Base Specification). This is 640-bit Jitter test pattern designed to maximize data­dependent jitter.
The following figure shows the probing method for transmitter "Common Mode Output Voltage (4.3.3)" tests.
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R&S®RTO-K81, R&S®RTO6-K81, R&S®RTP-K81/-K83
Figure 7-2: Probing with SMA cables
7.2.2.5 Measurements
Transmitter Tests
PCIe 1.1 / PCIe 2.0
This test does following measurements described in table 4-5 at section 4.3.3 of PCI Express Base Specification, REV. 1.1
RMS AC Peak Common Mode Output Voltage (V
Average DC Common Mode Output Voltage (V
DC Common Mode Line Delta (V
DC Common Mode Output Voltage Variation (V
TX-CM-DCLINE-DELTA
TX-CM-ACp
TX-DC-CM
)
TX-DC-CM-VARIATION
)
)
)
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