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PCI Express® Transmitter Compliance/Debug Solution

DPO-MSO70000 Option PCE6, PCE5, PCE4, and PCE3 Datasheet

DPO-MSO70000 Option PCE6, PCE5, PCE4, and PCE3 Datasheet
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PCIExpressGen6Tx EN US 61W 24540 25
PCIExpressGen6Tx EN US 61W 24540 25

The PCI-SIG 6.0 specification has introduced PAM4 signaling to achieve 64 GT/s while maintaining NRZ signaling for backwards compatibility. The multilevel (PAM4) approach brings new signal integrity challenges to adopters and validation teams. Tektronix PCI Express 6.0 software minimizes this new complexity to automate testing and ensures measurement accuracy and repeatability.

The Tektronix Option PCE6 (Gen6), Option PCE5 (Gen5), Option PCE4 (Gen4), and PCE3 (Gen 1/2/3) applications provide the most comprehensive solution for PCI Express Transmitter and Reference Clock compliance testing as well as debug and validation of PCI Express devices against the PCI-SIG® specifications.

Features and benefits

  • Support for PCI Express Gen6 Base (silicon) transmitter testing
  • PCI Express Gen 1/2/3/4/5 validation and compliance of Transmitters at the BASE (silicon) and CEM (system) levels for the Tektronix DPO/MSO70000 Series oscilloscopes
  • Reference Clock jitter and signal integrity measurements for Gen1 to Gen5 using SkyWorks Clock Jitter Tool and DPOJET
  • 64 GT/s (PAM4) signal integrity measurements using DPOJET/PAMJET
  • PCIe Gen6 Tx Equalization Preset test using AC Fit Method
  • Automation fully configures the oscilloscope including the vertical and horizonal scales for accurate and specification compliant measurements
  • Automated acquisition and waveform management to simplify testing across supported data rates, Tx compliance patterns, and lane widths
  • Automated DUT control to step through data rates and compliance patterns
  • RF switch automation of PCIe3 test solution, supporting up to x16 lanes
  • Support for NVMe and CXL physical layer testing
  • De-embedd the impact of a break-out channel, test fixtures, and cables to achieve measurements at the test point of interest (requires Option SDLA Serial Data Link Analysis)
  • Test selection: Select the specification against which to perform the analysis, and select individual tests or groups of tests to perform targeted compliance analysis for failing tests
  • SigTest integration: Uses SigTest EXE (using command line interface) to perform the analysis of acquired waveforms, providing the ability to test a system using the PCI-SIG®-recommended analysis tool
  • Analysis of multiple waveforms are done in parallel using multiple sigtest instances
  • AC Fit Tx EQ Preset characterization for Gen5 with SigTest Phoenix
  • Reporting: Compiles all test results into a customizable report with Pass/Fail results for easy analysis and record keeping
  • Summary table at the top of the report for quick glance of results for normative measurement
  • Pattern matching: Verifies that the correct set of compliance patterns are sent by the transmitter before acquiring signals for compliance analysis. This feature is supported up to Gen3 data rates
  • PHY level protocol decode: Decodes and displays the PCIe data in a protocol-aware view. A time-correlated event table view with waveforms allows for quickly searching through events of interest
  • Multi-lane testing: Perform analysis on multiple lanes of PCI express data to speed up the Tx analysis in a multi-lane system
  • Compliance and debug: Provides a toolkit of DPOJET-based setups to quickly switch into debug and validation mode when a DUT fails compliance
  • Analysis and debug tools: Tektronix provides a broad range of compliance, debug, and validation tools for Transmitter (Tx), Receiver (Rx), and protocol testing
  • Comprehensive programmatic interface: Enables automation of programs and scripts to call PCIe related TekExpress functions

Applications

Tektronix provides the most comprehensive solutions for validation and compliance of PCI Express transmitters at the Base (silicon) and system level including support for CEM, U.2, and M.2 interfaces. Numerous protocols utilizing the PCI Express physical layer including NVMe and CXL can take advantage of the transmitter and reference clock automation under TekExpress software solution.

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TekExpress PCIe test selection for compliance test analysis

The Tektronix Option PCE3 (Gen1/2/3), PCE4 (Gen4) and PCE5 (Gen5) includes compliance and debug testing and electrical validation for the following:

  • Root complex base Tx jitter and voltage
  • Endpoint base Tx jitter and voltage
  • Switches
  • Bridges
  • Add-In cards
  • System boards
  • Embedded systems
  • Express module

The Tektronix Option PCE3, PCE4 and PCE5 applications include a TekExpress™ compliance automation solution that integrates SigTest from the PCI-SIG as well as Tektronix DPOJET-based PCI Express Jitter and Eye Diagram analysis tools for debug purposes in a single software package.

The Tektronix Option PCE6 (Gen6) includes the following signal quality measurements:

  • Unit Interval
  • V-TX-DIFF-PP
  • V-TX-EIEOS-FS
  • T-TX-UTJ
  • T-TX-UDJDD
  • T-TX-RJ
  • RLM-TX
  • SNDR
  • PS21 TX
  • V-TX-BOOST
  • T-TX-UPW-TJ
  • T-TX-UPW-DJDD
  • V-TX-AC-CM-PP
  • V-TX-AC-CM-PP-Filtered

The PCIe Gen6 has two pre-shoot and one de-emphasis value for each preset complicating the preset test algorithm. The Tektronix PCE6 also comes with Tektronix Preset test tool, which can be used either by TekExpress or manually.

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Tektronix Preset Test Utility

TekExpress compliance automation is available now for PCIe Gen 1-3 CEM and Gen 3 Base via Option PCE3, Gen4 CEM and Gen4 Base via Option PCE4, and Gen5 CEM and Gen5 Base via Option PCE5.

The Tektronix Option PCE3, Option PCE4, and Option PCE5 applications are compatible with Tektronix DPO/MSO70000 series oscilloscopes that are designed to meet the challenges of the next generation of serial data standards such as PCI Express. These oscilloscopes provide industry competitive vertical noise performance with the flattest frequency response for oscilloscopes in their class. The Tektronix DPO/MSO70000 series of oscilloscopes have been approved by PCI-SIG for compliance testing.

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TekExpress oscilloscope acquisition setup

Compliance testing

The PCI-SIG provides PCI Express compliance tests for testing PCI Express systems and add-in cards. For a PCI Express system or a device to be placed on the Integrators List, the system or device must pass interoperability and compliance testing. For electrical validation, the PCI-SIG uses SigTest Post Capture Analysis Software that uses acquisitions from an oscilloscope connected to the PCI-SIG's CBB (main board + riser) test fixture for add-in cards or CLB test fixture for systems to perform the analysis. Manually capturing the required waveforms and analyzing them is tedious, time consuming, and error prone.

The Tektronix Option PCE3, Option PCE4, and Option PCE5 TekExpress Automation for PCI Express Transmitter Compliance reduces the effort and accelerates the compliance testing for PCI Express systems and devices with several unique and innovative capabilities. These options ultimately allow the testing of devices that support various technologies, such as NVMe, which is supported as an add-in card device, or through a U.2 or M.2 connector.

The Tektronix Option PCE3, Option PCE4, and Option PCE5 TekExpress Automation software can control the DUT using selected models of a Tektronix AFG or AWG, GRL PCIE 3/4 Controller or NI USB6501 CBB controller to toggle DUT and automatically cycle it through various speeds, de-emphasis, and presets that are necessary for the compliance test. This eliminates the error-prone manual push button approach normally used for DUT control on the CBB and CLB test fixtures.

A complete test run requires multiple waveforms to be acquired at different DUT settings per lane. This waveform set will increase by the number of lanes that need to be analyzed. The ability to manage and store the required data for analysis and future reference is an important criterion for any compliance solution. The Option PCE3, Option PCE4 and Option PCE5 TekExpress automation software, apart from adjusting the horizontal and vertical settings as well as the acquisition depth for optimal signal quality for accurate analysis, provides easy analysis to manage multiple acquired waveforms.

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TekExpress setup configuration

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TekExpress setup preferences

This makes use of the PCI-SIG's SigTest EXE to analyze the acquired waveforms. Thus makes the results of the analysis consistent with the SigTest post-capture analysis software used at PCI-SIG workshops for compliance testing.

The Option PCE3, Option PCE4 and Option PCE5 TekExpress automation software provides flexibility in selecting data rates, voltage swing, presets, and the tests to run. It also provides the option to de-embed the effects of the channel and the test fixtures and provide an accurate representation of the signal at the pins as required by the specification.

TekExpress uses Tektronix next generation PAM4 tool PAMJET for the measurement. During analysis, TekExpress will automatically set up the tool as per the specification, capture results, and report them to the user. PAMJET also allows expert users to configure the PAMJET tool to test the DUT in non-specification settings for debugging purposes.

PAMJET introduces the Signal to Noise Distortion Ratio (SNDR) measurements with measurement methodology updated to support the latest PCI Express 6.0 Base Specification. Support for instrument noise compensation is integrated to improve measurement accuracy.

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Selection of Measurement Category in PAM4 Transmitter Analysis

All the analysis results are compiled in a PDF/HTML/CSV formatted report that can include pass/fail summary, eye diagrams, setup configuration, and user comments. The contents of the report can be customized to include information of interest such as append results and custom report generation based on test name/pass fail/equalization.

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TekExpress report generation preferences
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TekExpress results summary

Reference Clock Testing with TekExpress

Reference Clock testing has moved from optional to required for many designs due to the jitter limit decrease driven by the highest data rates supported by the PCI-SIG standards. Additionally, with the removal of dual-port (data and clock Tx testing) for Gen5 systems, compliance is required on the reference clock. The TekExpress PCIe solution has now integrated the SkyWorks Clock Jitter Tool to allow an automated hassle-free Reference Clock testing. Once the user connects the Reference Clock output to the oscilloscope, the TekExpress PCIe software will acquire the signal, invoke the SkyWorks Clock Jitter Tool, and provide Reference Clock test results from Gen1 to Gen5. Instrument noise compensations is supported with the Skyworks Clock Jitter Tool.

Switch Matrix automation

Switch Matrix application allows to configure and setup automated multi-lane testing using RF switch. The solution allows you to map each of the several transmitter signals and forward the selected input either to another relay or to the oscilloscope channel. Option SWX-PCE supports x12 and x16 lanes using Keithley and Gigatronics switches respectively, and enhances throughput and automated test speed.

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Switch Matrix application settings
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Switch configuration example

Debug and validation

If a DUT or Add-In card fails any portion of the compliance test, the application includes a DPOJET-based debug and analysis tool kit customized for debug and validation of PCI Express interfaces.

The new jitter measurements introduced with PCIe Gen3 and Gen 4 provide separate limits for data dependent (DDJ) and uncorrelated deterministic jitter (UDJDD). It is important to separate DDJ (which can be compensated with transmitter and receiver equalization) and UDJDD (which can be caused by effects such as crosstalk and power supply noise).

Apart from the above Jitter measurements, Pulse Width Jitter (PWJ) is a new measurement that addresses the increased channel loss at 8 to 16 Gb/s. The purpose of the PWJ measurement is to ensure that lone bits meet minimum pulse width requirements. All new jitter measurements implement Q-scale extrapolation as defined in the base specification. The Tektronix Option PCE3, Option PCE4, and Option PCE5 provide the complete set of PCI Express 3.0, 4.0, and 5.0 Base Spec jitter measurements enabling silicon designers to verify that their silicon meets the base specification requirements.

Furthermore, the base specification requirements are defined at the pins of the transmitter. Before the measurements are computed the test channel must be de-embedded. De-embed filters can be easily created using the Tektronix Option SDLA64 Serial Data Link Analysis software and then quickly entered into the Option PCE3 and Option PCE4 base specification measurement setup and saved for future use. In addition to jitter, Option PCE3 and Option PCE4 also provide voltage, package loss, and transmitter equalization measurements.

Option PCE3 and Option PCE4 leverage the channel modeling and receiver equalization functionality of the Tektronix Option SDLA64 software to support CEM measurements. Unlike other solutions, Option PCE3 and Option PCE4 provide full visibility to the signal as it has been modified to embed the compliance channel and provide receiver equalization. Eye diagrams and measurements can be set up to visually see the results of channel embedding, CTLE application, and DFE. For example, when determining the optimal Rx Equalization settings (CTLE setting and DFE tap value) the resulting eye diagrams and measurements show the effects of post processing on the acquired signal. Compliance measurements can then be taken on the waveform.

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TekExpress PCI Express test report
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PCIExpressGen6Tx EN US 61W 24540 25
PCIExpressGen6Tx EN US 61W 24540 25
DPOJet PCE3 base specification measurement suite
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DPOJet PCE3 base specification measurement suite

PAMJET for GEN6 Base Measurements

Tektronix has created a next generation PAM4 tool named PAMJET, which is used for Gen6 Base measurement. This PAMJET tool can configure the measurement and can perform Bessel Thompson filtering, configure Gen6 clock recovery, configure CTLE, and report the results. These built-in functions are specifically designed to aid Gen6 Base testing.

DPOJET based Reference Clock measurements

The Tektronix DPOJET based RefClock measurements provide a reliable way to implement the Reference clock specifications described in the PCI Express Base Specification Rev 1.0 for Gen1, Gen2, Gen3, Gen4 and Gen5.

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Example of RefClk measurements, together with generated plots

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DPOJET measurements and their plots

Comprehensive programmatic interface

You can use Standard Commands for Programmable Instruments (SCPI) to communicate with the TekExpress application. The Online Help document of TekExpress application describes the steps for TCPIP socket configuration and TekVISA configuration to execute the SCPI commands.

PCI Express Decoder for Gen 1 - 4 (Option SR-PCIe)

Decode and Display of PCIe data in a protocol-aware view with the characters and names that are familiar from the standard such as the ordered sets: SKP, Electrical Idle, and EIEOS. A time correlated event table view with waveform allows for quickly searching through events of interest simultaneously. All decoding features support PCIe generations 1 - 4. The PCIe trigger is easily configured through Bus Setup under the oscilloscope's Vertical menu with a variety of user-adjustable settings. The PCIe data stream is integrated with serial bus trigger and search for PCIe gen 1 and 2 allows for triggering on information of interest.

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PCIExpressGen6Tx EN US 61W 24540 25

PCIExpressGen6Tx EN US 61W 24540 25

Comprehensive measurements for PCIe validation, debug, and precompliance

Tektronix Option PCE3, Option PCE4 and Option PCE5 provide measurements that span multiple test points and versions of the PCIe specification. All PCIe specifications, test points, and measurements supported are listed in the following sections.

Test method Spec revision PCI Express specification title Test points defined
Rev 1.1 Rev 1.1 Base Specification Transmitter and Receiver
Rev 1.1 CEM Specification System and Add-in Card Reference Clock
Rev 1.0 Express Module Specification Transmitter Path and System Board
Rev 1.0 PCMCIA Express Card Standard

Host System Transmitter

Express Card Transmitter

Ver. 3.0 Rev 1.1 Mobile PCI Express Module (MXM) Electromechanical Specification PCI Express
Rev 2.0 Rev 1.0 External Cabling Specification Transmitter and Receiver Path
Rev 2.0 Base Specification

Transmitter and Receiver

Mobile Low-power Transmitter

Rev 2.0 CEM Specification System and Add-in Card (3.5 and 6 dB de-emphasis)
Ver. 3.0 Rev 1.1 Mobile PCI Express Module (MXM) Electromechanical Specification PCI Express
Rev 3.0 Rev 1.0 Base Specification Transmitter
Rev 1.0 CEM Specification System and Add-in Card
Rev 3.0 Test Specification System and Add-in Card
Rev 4.0 Rev 1.0 CEM Specification System and Add-in Card
Rev 5.0 Rev 1.0 Base Specification Transmitter
Rev 0.5CEM SpecificationTransmitter
Rev 6.0 Rev 1.0 Base Specification Transmitter

SignalConnect™ software and TCS70902 Calibration Source

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SignalCorrect allows quick characterization of cables, fixtures and other types of interconnects using the TCS70902 fast step source and the response captured on a DPO70000SX Series real-time oscilloscope.
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SignalCorrect creates a filter that you can apply to your oscilloscope inputs to de-embed your device or interconnect under test.

Specifications

All specifications apply to all models unless noted otherwise.

Supported Reference clock measurements

Supported Reference clock measurements
Generation Architecture Measurements Limits
PCIe 1.1 Common clock T-CC- RCLK Specified
T-WST-CC- RCLK Specified
Independent RefClock IR2.5GBPS Specified
PCIe 2.1 Common clock T-RMSCC-RCLK-5GBPS Specified
T-WST-RMSCC-RCLK-5GBPS Specified
Independent RefClock IR5GBPS Specified
PCIe 3.1 Common clock T-RMSCC-RCLK Specified
T-WST-RMSCC-RCLK Specified
Independent RefClock IR8GBPS Specified
PCIe 4.0 Common clock PCIE4_T-RMSCC-REFCLK Specified
PCIE4_T-WST-RMSCC-REFCLK Specified
Independent RefClock IR16GBPS Specified
PCIe 5.0 Common clock PCIE5_T_RMSCC-REFCLK Specified
PCIE5_T-WST-RMSCC-REFclk Specified
Independent RefClock IR32GBPS Specified

Supported AC reference clock measurements

AC reference clock specifications 1
Generation Specifications Measurements Symbol
Common across all generations AC reference clock specifications Cycle to Cycle jitter CC_JITTER
Differential Input High Voltage V_IH
Differential Input Low Voltage V_IL
Duty Cycle Duty Cycle
Absolute Max input voltage Vmax
Absolute Min input voltage Vmin
Absolute Period (including Jitter and Spread Spectrum modulation) Period Abs
Falling Edge Rate Falling-Edge-Rate
Rising Edge Rate Rising-Edge-Rate
Average Clock Period Accuracy Avg Prd Accur
Rising edge rate (REFCLK+) to falling edge rate (REFCLK-) matching Rise fall Match
Absolute crossing point voltage VCROSS
SSC SlewRateSSC SlewRate

Supported base specification measurements

Supported PCI Express 4.0 Base Transmitter measurements
Parameter DPOJET measurement 8.0 GT/s, Rev 3.0 16.0 GT/s, Rev 1.0
Full Swing Tx voltage with noTxEq V-TX-FS-NO-EQ Specified Specified
Reduced Swing Tx voltage with noTxEq V-TX-RS-NO-EQ Specified Specified
Min swing during EIEOS for full swing V-TX-EIEOS-FS Specified Specified
Min swing during EIEOS for reduced swing V-TX-EIEOS-RS Specified Specified
Pseudo package loss Root device ps21TXRootdevice Specified Specified
Pseudo package loss AIC device ps21TXAICdevice Specified Specified
Tx uncorrelated total Jitter T-TX-UTJ Specified Specified
Tx uncorrelated deterministic jitter T-TX-UDJDD Specified Specified
Data dependent jitter T-TX-DDJ Specified Specified
Total uncorrelated PWJ T-TX-UPW-TJ Specified Specified
Deterministic DjDD uncorrelated PWJ T-TX-UPW-DJDD Specified Specified
Maximum Boost voltage ratio for full swing V-TX-FS-BOOST Specified Specified
Maximum Boost voltage ratio for reduced swing V-TX-RS-BOOST Specified Specified
Tx DC peak-peak common mode voltageVTX_DC_CMSpecifiedNA
Absolute Delta of DC Common Mode Voltage between D+ and D-VTX_CM_DC_LINE_DELTASpecifiedNA
Electrical Idle Differential Peak Output VoltageVTX_IDLE_DIFF_AC_pSpecifiedNA
DC Electrical Idle Differential Output VoltageVTX_IDLE_DIFF_DCSpecifiedNA
Supported PCI Express 5.0 Base Transmitter measurements
Parameter DPOJET measurement 32.0 GT/s, Rev 5.0
Tx uncorrelated total Jitter T-TX-UTJ 6.25 ps (max)
Tx uncorrelated deterministic Jitter T-TX-UDJDD 3.125 ps (max)
Data dependent Jitter T-TX-DDJ NA
Total uncorrelated PWJ T-TX-UPW-TJ 6.25 ps (max)
Total Random Jitter (informative) T-TX-RJ 0.23-0.45 ps rms
Deterministic DjDD uncorrelated PWJ T-TX- UPW-DJDD 2.5 ps (max)
RMS RefClk jitter for common RefClk architecture T-RMSCC-RCLK 0.25 ps (max)
IR RefClk jitter IR32GBPS NA
Pseudo Package Loss ps21Tx (max) 8.5dB
Boost ratio VTX-BOOST 8.0 (min) dB
EIEOS VTX-EIEOS 250 mV
TX Differential Peak to Peak VTX-DIFF-PP 800 mV (max) 1300mV
Unit IntervalUI31.246875 (min) 31.253125 (max)
Differential transmitter (Tx) output measurements
Parameter Symbol(s) 2.5 GT/s Rev 1.1/2.0 5 GT/s Rev 2.0
Clock Recovery NA Specified Specified
Unit Interval UI Specified Specified
Differential Peak-to-Peak Tx Voltage Swing

VTX-DIFF-P-P

VTX-SWING

VTX-EYE-FULL

Specified Specified
Low-power Differential Peak-to-Peak Tx Voltage Swing

VTX-SWING-LOW

VTX-EYE-HALF

Specified Specified
De-emphasized Output Voltage Ratio VTX-DE-RATIONot Specified Specified
Instantaneous Lane Pulse Width TMIN-PULSENot Specified Specified
Transmitter Eye including All Jitter Sources

TTX-EYE

TTX-EYE-TJ

Specified Specified
Maximum Time between the Jitter Median and Maximum Deviation from the Median TTX-EYEMEDIAN-to-MAXJITTERSpecified Specified
Deterministic Jitter TTX-DJ-DDNot Specified Specified
Tx RMS Jitter <1.5 MHz TTX-LF-RMSNot Specified Specified
D+/D– Tx Output Rise/Fall Time

TTX-RISE

TTX-FALL

Specified Specified
Tx Rise/Fall Mismatch TRF-MISMATCHNot Specified Specified
AC Peak-to-Peak Common Mode Output Voltage VTX-CM-AC-PPNot Specified Specified
AC Peak Common Mode Output Voltage VTX-CM-AC-PSpecified Specified
Absolute Delta of DC Common Mode Voltage between D+ and D– VTX-CM-DC-LINE-DELTASpecified Specified

Supported CEM specification measurements

Add-in Card 8 GT/s transmitter path compliance measurements
Parameter Symbol
Transition Eye Voltage PCIe V-TXA
Nontransition Eye Voltage PCIe V-TXA-d
Eye Width PCIe T-TXA
Add-in Card transmitter path compliance measurements
Parameter Symbol(s) 2.5 Gt/s Rev 1.1/2.0 5 GT/s Rev 2.0
Clock Recovery NA Specified Specified
Unit Interval UI Specified Specified
Eye Height of Transition Bits VTXASpecified Specified
Eye Height of Nontransition Bits VTXA_dSpecified Specified
Eye Width with Sample Size of 106 UI TTXA in Rev 1.1 Specified Not Specified
Jitter Eye Opening at BER 10–12TTXA in Rev 2.0 Specified Specified
Maximum Median-Max Jitter Outlier with Sample Size of 106 UI JTXA-MEDIAN-to-MAX-JITTERSpecified Not Specified
Total Jitter at BER 10–12TJ at BER 10–12Not Specified Specified
Deterministic Jitter at BER 10–12Max DJ Not Specified Specified
System board transmitter path measurements
Parameter Symbol(s) 2.5 GT/s Rev 1.1/2.0 5 GT/s Rev 2.0
Clock Recovery NA Specified Specified
Unit Interval UI Specified Specified
Eye Height of Transition Bits VTXSSpecified Specified
Eye Height of Nontransition Bits VTXS_dSpecified Specified
Eye Width with Sample Size of 106 UI TTXS in Rev 1.1 Specified Not Specified
Jitter Eye Opening at BER 10–12TTXS in Rev 2.0 Specified Specified
Maximum Median-Max Jitter Outlier with Sample Size of 106 UI JTXA-MEDIAN-to-MAX-JITTERSpecified Not Specified
Total Jitter at BER 10–12TJ at BER 10–12Not Specified Specified
Deterministic Jitter at BER 10–12Max DJ Not Specified Specified
Reference clock measurements
Parameter Symbol 2.5 Gt/s Rev 1.1/2.0
Reference Clock Phase Jitter at BER 10–6NA Specified

PCI ExpressModule™ measurements

ExpressModule Add-in Card transmitter path measurements
Parameter Symbol Rev 1.0
Clock Recovery NA Specified
Unit Interval UI Specified
Eye Height of Transition Bits VTXASpecified
Eye Height of Nontransition Bits VTXA_dSpecified
Eye Width with Sample Size of 106 UI TTXAin Rev 1.1 Specified
Jitter Eye Opening at BER 10–12NA Specified
Maximum Median-Max Jitter Outlier with Sample Size of 106 UI JTXA-MEDIAN-to-MAX-JITTERSpecified
ExpressModule system board transmitter path measurements
Parameter Symbol Gen1 Rev 1.0
Clock Recovery NA Specified
Unit Interval UI Specified
Eye Height of Transition Bits VTXSSpecified
Eye Height of Nontransition Bits VTXS_dSpecified
Eye Width with Sample Size of 106 UI TTXSSpecified
Jitter Eye Opening at BER 10–12NA Specified
Maximum Median-Max Jitter Outlier with Sample Size of 106 UI JTXA-MEDIAN-to-MAX-JITTERSpecified

PCI Express external cabling measurements

External cabling transmitter path measurements
Parameter Symbol Rev 1.0
Clock Recovery NA Specified
Unit Interval UI Specified
Eye Height of Transition Bits VTXASpecified
Eye Height of Nontransition Bits VTXA_dSpecified
Jitter Eye Opening at BER 10–12TrxA at BER 10–12Specified
Eye Width with Sample Size of 106 UI TrxA at 106 Samples Specified

PCMCIA ExpressCard™ measurements

ExpressCard - Module transmitter path measurements
Parameter Symbol Release 1.0
Clock Recovery NA Specified
Unit Interval UI Specified
Eye Height of Transition Bits VTXASpecified
Eye Height of Nontransition Bits VTXA_dSpecified
Eye Width across any 250 UIs TTXASpecified

ExpressCard-Host sys trans path

ExpressCard™ - Host system transmitter path measurements
Parameter Symbol Release 1.0
Clock Recovery NA Specified
Unit Interval UI Specified
Eye Height of Transition Bits VtxSSpecified
Eye Height of Nontransition Bits VtxS_dSpecified
Eye Width across any 250 UIs TTxSSpecified

MXM measurements

PCI Express measurements2
Parameter Symbol Release 1.1
Eye Height of Transition Bits VTXSSpecified
Eye Height of Nontransition Bits VTXS_dSpecified
Width at BER TTXSSpecified
Deterministic Jitter DJ Specified
Total Jitter TJ Specified

Ordering information

PCE33
PCI Express Gen1/2/3 TekExpress Compliance/Debug Automation with DPOJet Measurements Software
New instrument orders
Option PCE3
Product upgrades
DPO-UP Option PCE3
Floating licenses
DPOFL-PCE3
PCE44
PCI Express Gen4 TekExpress Compliance/Debug Automation with DPOJet Measurements Software
Requires PCE3 option to support PCI Express Gen1/2/3 TekExpress Compliance/Debug Automation with DPOJet Measurements Software

For CEM System/Host Test 5

New instrument orders
Option PCE4
Product upgrades
DPO-UP Option PCE4
Floating licenses
DPOFL-PCE4
PCE5
TekExpress PCIe Tx Compliance Solution, supports PCIe Gen5 (requires Opt. DJA)
New instrument orders
Option PCE5
Product upgrades
DPO-UP Option PCE5
Floating licenses
DPOFL-PCE5
PCE6
TekExpress PCIe Tx Compliance Solution, supports PCIe Gen6 (requires Opt. DJA and PAMPCIE6)
New instrument orders
Option PCE6
Product upgrades
DPO-UP Option PCE6
Floating licenses
DPOFL-PCE6
SWX-PCE6
Switch configurator for PCIe Gen 1/2/3 (please note the RF Switch will not support PCIe Gen4 Tx testing)
New instrument orders
Option SWX-PCE
Floating licenses
DPOFL-SWX-PCE

Recommended DPO/MSO70000 Series Oscilloscopes

2.5 Gb/s (PCI Express 1.0/1.1)
DPO/MSO70000 Series (6 GHz or higher bandwidth models required for compliance testing)
5.0 Gb/s (PCI Express 2.0)
DPO/MSO70000 Series (12.5 GHz or higher bandwidth models)
8.0 Gb/s (PCI Express 3.0)
DPO/MSO70000 Series (12.5 GHz or higher bandwidth models)
16.0 Gb/s (PCI Express 4.0)
DPO/MSO70000 Series (25 GHz or higher bandwidth models)
32.0 Gb/s (PCI Express 5.0)
DPS77004SX Series (50 GHz or higher bandwidth models), DPO/MSO70000 Series (33 GHz or higher bandwidth models for Gen5 CEM testing)
64.0 Gb/s (PCI Express 6.0)
DPS77004SX Series (50 GHz or higher bandwidth models)
Support for DPO/MSO70000 SX Series oscilloscopes
Supported DPO70000 Series configurations
Model Description

Option

PCE3

Option

PCE4

Option

PCE5

Option

PCE6

DPO71604C 16 GHz DPO; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
DPO72004C 20 GHz DPO; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
DSA71604C 16 GHz DSA; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
DSA72004C 20 GHz DSA; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
MSO71604C 16 GHz MSO; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
MSO72004C 20 GHz MSO; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
DPO72504D 25 GHz DPO; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
DPO73304D 33 GHz DPO; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
DSA72504D 25 GHz DSA; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
DSA73304D 33 GHz DSA; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
DPO72304DX 23 GHz DPO; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
DPO72504DX 25 GHz DPO; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
DPO73304DX 33 GHz DPO; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
MSO72304DX 23 GHz MSO; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
MSO72504DX 23 GHz MSO; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
MSO73304DX 33 GHz MSO; 2 Ch, 100 GS/s or 4 Ch, 50 GS/s
DPO77002SX 70 GHz ATI; 1 Ch, 70 GHz, 200 GS/s or 2 Ch, 33 GHz, 100 GS/s
DPS77004SX 70 GHz ATI System; 2 Ch: 70 GHz: 200 GS/s or 4 Ch: 33 GHz: 100 GS/s
DPO75902SX 59 GHz ATI; 1 Ch, 59 GHz, 200 GS/s or 2 Ch, 33 GHz, 100 GS/s
DPS75904SX 59 GHz ATI System; 2 Ch: 59 GHz: 200 GS/s or 4 Ch: 33 GHz: 100 GS/s
DPO75002SX 50 GHz ATI; 1 Ch, 50 GHz, 200 GS/s or 2 Ch, 33 GHz, 100 GS/s
DPS75004SX 50 GHz ATI System; 2 Ch: 50 GHz: 200 GS/s or 4 Ch: 33 GHz: 100 GS/s
DPO73304SX 33 GHz DPO; 2 Ch, 33 GHz, 100 GS/s or 4 Ch, 23 GHz, 50 GS/s
DPS73308SX 33 GHz DPO System; 4 Ch: 33 GHz: 100 GS/s or 4 Ch: 23 GHz: 50 GS/s
DPO72304SX 23 GHz DPO; 4 Ch: 23 GHz: 50 GS/s or 2 Ch: 23 GHz: 100 GS/s
DPO71604SX 16GHz DPO; 4 Ch: 16GHz: 50GS/s or 2 Ch: 16 GHz: 100 GS/s
DPO71304SX 13GHz DPO; 4 Ch: 13GHz: 50GS/s or 2 Ch: 13 GHz: 100 GS/s

Accessories

Recommended accessories

P75xx, P76xx, and P77xx Series (TriMode™ Differential Probes)

P7513, P7513A, P7516, P7520A, P7625, P7630, P7633, P7713, P7716, P7720 with respective tips

PCI Express
SpeedMinimum oscilloscope bandwidth

TCA-SMA

(Max 18 GHz)

TCA-292D

(Max 33 GHz)

P7500

(Max 20 GHz)

P7700

(Max 20 GHz)

P7600

(Max 33 GHz)

2.5 GT/s6 GHz
5.0 GT/s12.5 GHz
8.0 GT/s 12.5 GHz
16.0 GT/s 25 GHz
32.0 GT/s BASE50 GHz
32.0 GT/s CEM33 GHz
100 MHz RefClk 5 GHz
64.0 GT/s BASE50 GHz
Option SDLA64
Serial Data Link Analysis Visualizer 7
Option SR-PCIe
Bus decode support for PCI Express serial busses 8
Option PAMPCIE6
Used for Gen6 Base

Recommended for automated DUT control

RF Switch
Keithley System S46T RF Microwave Switch for X12 PCIe

Gigatronics RF Switch 26 GHz (8902-L-48TS26) for x16 PCIe

Tektronix AFG3252
Arbitrary Function Generator
Tektronix AFG3252C
Arbitrary Function Generator
AWG5002B/C
Arbitrary Waveform Generator
AWG5012B/C
Arbitrary Waveform Generator
AWG5014B/C
Arbitrary Waveform Generator
AWG7082B/C
Arbitrary Waveform Generator
AWG7122B/C
Arbitrary Function Generator
AWG70001A
Arbitrary Waveform Generator
AWG70002A
Arbitrary Waveform Generator
AFG31252
Arbitrary Function Generator
AFG31251
Arbitrary Function Generator
AFG3252C
Arbitrary Function Generator
GRL PCIE34 Controller for automatic test pattern toggling and DUT power cycle (for Add-In-Card)

Part number : GRL-PCIE34-P1

Contact GRL at for support and to request for a quote.

Recommended test fixtures, cables, and tools

Description Image

Description PCI Express 5.0 System Board (Tektronix NON-COMPLIANCE)

Tektronix PN TF-PCIE5-CEM-X1 or TF-PCIE5-CEM-X16

Specifications

  • X16 CEM connector (surface mount) with optimized layout
  • Megtron 6 low loss material (~1 dB @ 16 GHz)
  • Microstrip routing (no vias)
  • MMPx (Huber Suhner) RF connectors for Tx and Rx connections
  • Tx trace length of 3 in.
  • Rx trace length of 4 in.
  • 5.0 Base Specificaiton Reference Clock compliance chip
  • Power connector (2x10)
  • Opto-isolator switch for automation of Power, Reset, and Toggle
  • Insertion loss characterization traces

PCIExpressGen6Tx EN US 61W 24540 25

Description PCI Express 5.0 Add-in Card Board (Tektronix NON-COMPLIANCE)

Tektronix PN TF-PCIE5-CEM-X1 or TF-PCIE5-CEM-X16

Specifications

  • x1/x16 Edge Finger and x4/x8 Edge Finger variants with optimized layout
  • TF-PCIE5-CEM-X1 comes with X1 and X16 CLB and TF-PCIE5-CEM-X16 comes with X1, X4, X8 and X16 CLB.
  • Sideband signal RC terminations
  • Megtron 6 Low Loss Material (~1 dB @ 16 GHz)
  • Microstrip routing (no vias)
  • MMPx (Huber Suhner) RF oncnectors for Tx and Rx connections
  • Tx trace length of 3 in.
  • Rx trace length of 4 in.
  • 5.0 Base Specificaiton Reference Clock compliance chip
  • Compliance toggle circuit (switch between Tx compliance patterns)
  • Opto-isolator switch for automation of Power, Reset, and Toggle
  • Insertion loss characterization traces

PCIExpressGen6Tx EN US 61W 24540 25

Description PCI Express 5.0 Variable ISI Board (Tektronix NON-COMPLIANCE)

Tektronix PN TF-PCIE5-CEM-X1 or TF-PCIE5-CEM-X16

Specifications

  • 36 variable length differential pairs (0.5 dB @ 16 GHz step size)
  • Megtron 6 Low Loss Material (~1 dB @ 16 GHz)
  • Microstrip routing (no vias)
  • MMPx (Huber Suhner) RF connectors for Tx and Rx connections
PCIExpressGen6Tx EN US 61W 24540 25
Description: [PCI-SIG] PCIe 4.0 Preliminary CEM Fixture Kit

PN: PCIe-CLB-X1X16, PCIe-CLB-X4X8, PCIe-CBB-MAIN, and PCIe-VAR-ISI

The PCIe 4.0 CEM Beta fixtures require a VNA based characterization to determine the appropriate Insertion Loss for performing the 16 GT/s Tx Signal Quality Test and the 16 GT/s Rx Link Equalization Test. This characterization will not be performed by the PCI-SIG, but must be performed by the end user after the fixtures are delivered.

Quantity: 1

Description: PCI Express Compliance Base Board (CBB) test fixture, revision 3.0. For testing PCI Express add-in cards, x1/x4/x8/x16 PCIe connectors on PCIe devices/add-in cards.

Vendor: PCI-SIG

https://www.pcisig.com/specifications/order_form

Vendor PN: CBB3

Tektronix PN: Only available from PCI-SIG

Quantity: 1

PCIExpressGen6Tx EN US 61W 24540 25
Description: PCI Express Compliance Load Board (CLB3) test fixture, revision 3.0. For testing PCI Express Platforms, x1 and x16 PCIe connectors on PCIe systems/mother boards.

Vendor: PCI-SIG

https://www.pcisig.com/specifications/order_form

Vendor PN: x1/x16 CLB3

Tektronix PN: Only available from PCI-SIG

Quantity: 1

PCIExpressGen6Tx EN US 61W 24540 25
Description: PCI Express Compliance Load Board (CLB3), Revision 3.0. For testing PCI Express Platforms, x4 and x8 PCIe connectors on PCIe systems/mother boards.

Vendor: PCI-SIG

https://www.pcisig.com/specifications/order_form

Vendor PN: x4/x8 CLB3

Tektronix PN: Only available from PCI-SIG

Quantity: 1

PCIExpressGen6Tx EN US 61W 24540 25
Description: PCI Express Compliance Load Board (U.2 CLB3) test fixture, revision 3.0. For testing PCI Express Platforms, x1 and x4 PCIe connectors on PCIe devices/add-in cards.

Vendor: PCI-SIG

https://www.pcisig.com/specifications/order_form

Vendor PN: U.2 CLB3

Tektronix PN: Only available from PCI-SIG

Quantity: 1

Note: U.2 was formally known as SFF-8639.

PCIExpressGen6Tx EN US 61W 24540 25
Description: PCI Express Compliance Load Board (U.2 CLB3), Revision 3.0. For testing PCI Express Platforms, x1 and x4 PCIe connectors on PCIe systems/mother boards.

Vendor: PCI-SIG

https://www.pcisig.com/specifications/order_form

Vendor PN: U.2 CLB3

Tektronix PN: Only available from PCI-SIG

Quantity: 1

Note: U.2 was formally known as SFF-8639.

PCIExpressGen6Tx EN US 61W 24540 25
Description: Any ATX PC power supply

Vendor: Tektronix recommends "PC Power and Cooling 750 W Silencer MK III Series" or similar.

Quantity: 1

PCIExpressGen6Tx EN US 61W 24540 25
Description: SMP terminator, 50 Ω, limited detent.

Vendor: Fairview Microwave

http://www.fairviewmicrowave.com/rf-load-0.25-watts-26.5-ghz-smp-female-st2645-p.aspx

Vendor PN: ST2645

Tektronix PN: 131-9399-xx

Quantity needed per PCIe DUT link width:

  • x1: 0
  • x4: 6
  • x8: 14
  • x16: 30
PCIExpressGen6Tx EN US 61W 24540 25
Description: SMA Female to BNC Male adapter.

Vendor: Tektronix

Tektronix PN: 015-0572-xx

www.tek.com

Quantity: 2

PCIExpressGen6Tx EN US 61W 24540 25
Description: DC Block, SMA, 26`GHz

Vendor: Tektronix

www.tek.com

Tektronix PN: PSPL5500A, PSPL5501A, or PSPL5508

Quantity: 2

Note: This is an optional accessory and not shown in any of connection diagrams, but can be used if DC offset is encountered in any signal path.

PCIExpressGen6Tx EN US 61W 24540 25
Description: USB2.0 Cable, Type A Male to Type B Male, 6 foot

Vendor: Tektronix

Tektronix PN: 174-6053-xx

www.tek.com

Quantity: 1

PCIExpressGen6Tx EN US 61W 24540 25
Description: SMA-to-SMA, H+S SF104E Phase Kit (#84077556), Straight, 1`m, 1.5 ps phase-matched.

Vendor: Tektronix

www.tek.com

Tektronix PN: PMCABLE1M

Quantity: 1 cable pair per lane

PCIExpressGen6Tx EN US 61W 24540 25
Description: SMA-to-SMP right-angle cable pair, 102 mm, 1 ps phase-matched.

Tektronix PN: 174-6657-xx

Quantity: 1 cable pair

Note: Applicable only for Gen3

PCIExpressGen6Tx EN US 61W 24540 25
Description: SMA-to-SMP right-angle cable pair, 1 m, 1 ps phase-matched (one for AFG to Rx Lane0, one for 100 MHz RefClk for Ch3+4 for System Testing)

Tektronix PN: 174-6659-xx

Quantity: 1 cable pair

PCIExpressGen6Tx EN US 61W 24540 25
Description: SMP to SMP right-angle cable pair, 305 mm, 2.5 ps phase-matched set.

Tektronix PN: 174-6658-xx

Quantity: 1 cable pair

PCIExpressGen6Tx EN US 61W 24540 25
Description Cables

Tektronix PN TF-PCIE5-CEM-X1 or TF-PCIE5-CEM-X16

Specifications

  • Huber Suhner 24” MMPX PLUG to MMPX PLUG cable

    PN 174-7327-00

    QTY = 4

  • Huber Suhner 4” MMPX – 2.92 Cable 32024E-29430CR-29092KCR-24PM +/-1 PS-STD

    PN 174-7326-00

    QTY = 4

Description: SMA torque wrench, 8.0 in-lbs.

Vendor: Fairview Microwave

http://www.fairviewmicrowave.com/sma-fixed-torque-wrench-click-st-sma3-p.aspx

Vendor PN: ST-SMA3

Tektronix PN: 003-1940-xx

Quantity: 1

PCIExpressGen6Tx EN US 61W 24540 25
Description: SMP right-angle cable extraction tool.

Vendor: Fairview Microwave

http://www.fairviewmicrowave.com/undefined-mmtl2682-p.aspx

Vendor PN: MMTL2682

Tektronix PN: 003-1941-xx

Quantity: 1

PCIExpressGen6Tx EN US 61W 24540 25
Description: SMP terminator installation/extraction tool.

Vendor: Fairview Microwave

http://www.fairviewmicrowave.com/undefined-mmtl4991-p.aspx

Vendor PN: MMTL4991

Tektronix PN: 003-1939-xx

Quantity: 1

PCIExpressGen6Tx EN US 61W 24540 25

Additional information

PCI Express receiver testing

Tektronix also offers a complete PCI Express receiver testing solution for Gen5 and Gen4 that includes stressed pattern generation as required by PCI-SIG test specifications and support for automated calibration and receiver tests. Automated DUT loopback control simplifies the testing process and reduces the time to test results.

PCIExpressGen6Tx EN US 61W 24540 25
PCIe receiver test setup

Salient features of the Receiver automation software with Tektronix DPO70000SX Series Real-Time Scopes and Anritsu MP1900A BERT are as follows:

  • Wizard-based user interface for each step of calibration and test
  • Efficient and quick calibration
  • Insertion Loss computation powered by Seasim Statistical Simulation Tool
  • Tx Link Equalization/Rx Link Equalization
  • Jitter Tolerance
  • Latest industry tool support (SigTest and Seasim)
  • Comprehensive Calibration and test reports
  • Automation for PCI Express PLL Bandwidth and Peaking tests (including SJ calibration) for Gen 3/4/5