DisplayPort 1.2 Automated Conformance Test Solutions

DisplayPort 1.2 Automated Conformance Test Solutions
DP12, DP-AUX Data Sheet
DisplayPort Debug, Characterization, and Compliance for:
Silicon Validation
Computer System Validation and Integration
Complete Automation for DisplayPort Testing
The Tektronix DP12 software, combined with a DisplayPort AUX controller
automates DisplayPort physical layer source compliance testing. DP-AUX
eliminates the need for user interaction during testing and the need to
use vendor-specific proprietary software. Engineers can simply select
the desired tests to run and work on other tasks while the tests are being
executed. The DP-AUX stand-alone GUI can also be used in validation,
debug, and characterization of DisplayPort Source and Sink devices.
Features & Benefits
Speeds Up Test Time – No user interaction is required to change source
output signal or validate sink silicon state or error count
Automates DisplayPort 1.2 Physical Layer Testing
Fully Integrated with DisplayPort Physical Layer Source Automation
Software (Option DP12)
Stand-alone GUI provides Flexibility to Perform DisplayPort Tests
without Automation Software
No Need to Learn Vendor-specific Software – A single GUI supports
all vendors
View Decoded AUX Traffic and Hot Plug Detect (HPD) Events from the
Device Under Test to the DP-AUX DisplayPort AUX Controller
Ability to Read and Write DPCD Registers supports Debug Activities
USB Interface enables the DP-AUX to run on a PC, Oscilloscope, or
Arbitrary Waveform Generator
DP-AUX connects using USB to a PC, Tektronix
DPO/DSA/MSO70000 Series (8 GHz minimum) oscilloscope, or
BERTScope BSA85C Bit Error Rate Analyzer and connects directly to
the DisplayPort Plug Test Fixture (TF-DP-TPA-P) and the DisplayPort
Receptacle Test Fixture (TF-DP-TPA-R). The AUX channel connects
through SMA connectors on the DP-AUX to the SMA connectors on the
DisplayPort test fixture. The Hot Plug Detect line connects from the 4-pin
header on the DisplayPort test fixture to the DP-AUX Auxiliary Controller
using the included hot-plug cable.
The DP12 Physical Layer Measurement and Automation system from
Tektronix is a performance (8 GHz and higher) oscilloscope software
application option designed to perform the core measurements found in the
DisplayPort Version 1.2 Compliance Test Specification or CTS.
The VESA DisplayPort 1.2 specification adds a new series of compliance
test specifications which supersedes the legacy DP1.1a specification.
A third speed grade of higher performance, DP1.2 introduces a new
higher data rate of 5.4 Gb/s known as HBR2 speed. This allows for
increased resolutions, higher refresh rates, and greater color depth. Other
improvements include multiple independent video streams (daisy-chain
connection with multiple monitors) and support for stereoscopic 3D media.
The Version 1.2 CTS outlines 17 transmitter physical layer validation
tests which are typically evaluated with an 8 GHz or higher bandwidth
Data Sheet
Source Test Suite:
1. EYE Diagram
2. Non Pre-emphasis Level Verification
3. Pre-emphasis Level and Post-cursor2
4. Inter-pair Skew
5. Intra-pair Skew
6. Differential Transition Time
7. Single-ended Rise and Fall Time Mismatch
8. Overshoot and Undershoot Test
9. Frequency Accuracy
10.AC Common Mode Noise
11.Non-ISI Jitter Measurement
12.Total Jitter and Random Jitter Measurement
13.Unit Interval
14.Main Link Frequency Compliance Stability
Recommended Accessory DP-AUX.
15.Spread Spectrum Modulation Frequency
16.Spread Spectrum Deviation
17.dF/dt Spread Spectrum Deviation HF Variation
DisplayPort Sources (transmitters) have state control requirements in order
to transmit the data patterns and signal properties required to demonstrate
conformance to the Compliance Test Specification.
The following properties and patterns need to be transmitted for full
measurement coverage:
1. Bit Rates: RBR, HBR, or HBR2
2. Data Patterns: D10.2, PRBS7, COMP, PLTPAT, PCTPAT
3. FFE (Pre-emphasis): 0 dB, 3.5 dB, 6 dB, 9.5 dB
4. Output Levels: 400 mV, 600 mV, 800 mV, 1200 mV
5. SSC (Spread Spectrum): On/Off
DP-AUX Source Test.
6. Post-curser2: Level 0, 1, 2, 3
crosstalk to stress a DisplayPort receiver. The BSA85C, in conjunction with
the Interconnect Compliance Channel fixturing from Tektronix, will generate
a known amount of ISI, RJ, and TJ at different frequencies to enable proper
stress levels on the design’s receiver. Once the crosstalk is applied to the
test pattern, the BERTScope can measure the final eye width expected
without crosstalk. Then a measurement can be made at each frequency
with crosstalk applied and compared with the results above.
These states can be either controlled manually (key during early silicon
turn-on) or with a Tektronix DP-AUX controller. This control accessory
interacts with the DUT’s DPCD registers to automate the extensive number
of measurements required to comprehensively test all 4 DisplayPort
lanes. The DP-AUX controller can read and write DPCD registers directly,
supporting both physical-layer and digital validation and debug.
A full-featured DP 1.2 device requires 432 acquired signals to completely
test all elements of the silicon per lane. X4 lanes results in 1728 automated
acquisitions per DUT.
Receiver Testing for DisplayPort 1.2
For receiver test verification in the DisplayPort 1.2 spec, Tektronix
recommends the use of a BERTScope BSA85C Bit Error Rate Analyzer.
When this product is properly set up, it can generate a calibrated level of
DP-AUX for DisplayPort 1.2 Test System Support
The DP-AUX system is a vital component to support the debug or
automated testing of DisplayPort systems. The DP-AUX system interfaces
to either a DisplayPort Source or Sink device’s auxiliary channels and
hot-plug detect system to permit full access to the internal DPCD registers.
The DP-AUX Source Test tab permits full DPCD-based control of the three
DP 1.2 bit rates (1.6, 2.7, and 5.4 Gb/s) as well as the broadcast patterns
and transmitter attributes.
DisplayPort 1.2 Automated Conformance Test Solutions — DP12, DP-AUX
DP-AUX Debug.
The DP-AUX accessory can be loaded on any Windows XP or Windows 7
PC, however it’s typically resident on the instrument as a control agent for
the DP 1.2 measurement and automation system.
The DP12 performance instrument option for DSA70000 Series
oscilloscopes offers a comprehensive DisplayPort Version 1.2 Physical
Layer Conformance Verification and Automation system.
DP-AUX Sink Test.
The Sink Test facilities in the DP-AUX system permit DPCD-based
interaction with a Sink (receiver) based error detection system to permit
evaluation of receiver’s conformance status to impaired compliance test
signals or for determining device margin.
The DP-AUX sets the receiver up to receive the frequency lock and symbol
lock patterns to validate that link training was successful. This then enables
users to conduct the receiver testing in-line with the Version 1.2 Compliance
Test Specification.
User-level debug which permits direct DPCD register read/write operations
as well as monitoring AUX-level protocol traffic, offers a unique level of
transaction and link training monitoring options.
User-defined Automation or Custom Controls of the Device States
Variable Test Controls based on the Product’s Intrinsic Capabilities
RBR, HBR, or HBR2 Speed Selections
Voltage Swing: 400-1200 mV
Post-cursor2 Levels
Pre-emphasis Controls
Test Pattern Selection
1, 2, or 4-lane Configurations
Full Test Pattern Validation Controls
Data Sheet
TCA Inputs.
DUT Setup Panel for DP12.
This RF switch configuration permits comprehensive and fully automated 4-lane input
testing of all DisplayPort input channels, including all common mode and intra-/inter-pair
skew measurements.
The DP12 transmitter test solution can be configured for 3 different signal
input configurations, listed below:
P7313SMA differential probe based input, which offers the most efficient
test configuration, by offering inputs for all 4 differential DisplayPort
signals concurrently. This configuration precludes the testing of common
mode and skew measurements
TCA-based single-ended input (direct Tektronix oscilloscope inputs)
supports both differential and single-ended tests including intra-pair skew
measurements on up to 2 concurrent DisplayPort signals
Keithley RF Switch 12:4 Mux Input.
Model Number: S46T – BBBB0000UUUUA
DisplayPort 1.2 Automated Conformance Test Solutions — DP12, DP-AUX
Full CTS 1.2 conformant measurement list tailored to the user-specified DUT capabilities.
Receiver Testing for DisplayPort.
Comprehensive user-defined and configurable .MHTL report generation with variable
degrees of report detail and full append capability.
Physical Characteristics
USB Type A to Type B
Cable Length
SMA to SMA Cable
Hot Plug Cable Length
Data Sheet
Ordering Information
DP12 software can be ordered separately as an upgrade option for a Tektronix
oscilloscope or ordered along with a new oscilloscope. Please refer to
http://www.tektronix.com/displayport for detailed product configuration on Source
and Sink testing.
DisplayPort AUX Controller and Accessories.
Includes: DisplayPort AUX Controller Hardware and Software, (2) SMA to SMA
Cables, Hot Plug Cable, and USB Type A to Type B Cable.
DP-AUX Service Options
DP12 Options
TekExpress DP12 Conformance Automation Solution:
Instrument License
TekExpress DP12 Conformance Automation Solution:
TekExpress DP12 Conformance Automation Solution:
Floating License
TekExpress DP12 Conformance Automation Solution:
Trial License
Provides a single calibration event or coverage for the
designated calibration interval, whichever comes first
Repair service coverage 1 year post warranty. This
option is available if the 1-year time period does not
extend beyond Long-term Product Support
Repair service coverage 2 years post warranty. This
option is available if the 2-year time period does not
extend beyond Long-term Product Support
Repair service coverage 3 years (includes product
warranty period). 3-year period starts at time of
customer instrument purchase. This option is available
if the instrument is within product warranty
Repair service coverage 5 years (includes product
warranty period). 5-year period starts at time of
customer instrument purchase. This option is available
if the instrument is within product warranty. It is not
available once instrument exits warranty period
DP-AUX Accessories
USB Type A to Type B
Hot Plug Detect Cable
SMA to SMA Cable
Qty Per Probe
Part Number
DisplayPort 1.2 Automated Conformance Test Solutions — DP12, DP-AUX
DisplayPort 1.2 CIC TF-DP-CIC-C1 (Cable Emulator).
Recommended Accessories for DisplayPort 1.2
DisplayPort Plug Receptacle and Calibration Structures.
The following are fixtures/accessories that enable the integration of test signals from
the Device Under Test (DUT) into the Tektronix testing system.
Receiver testing is performed through a series combination of TF-DP-CIC-C1 and
BSA-ISI ISI boards.
Receiver Testing Accessories
Mini DisplayPort Fixtures.
DisplayPort Bulk Cable Compliance Interconnect
Channel Board
miniDisplayPort Plug
miniDisplayPort Receptacle
TF-MINI-DP-TPA-PR2XT miniDisPlayPort Plug, Receptacle, Dual 2X Calibration,
with 18 inch Aux Box Pigtail Cable
miniDisplayPort Plug, Receptacle, with 18 inch Aux Box
Pigtail Cable
DisplayPort with Dual 2X Calibration
DisplayPort Plug with 18 inch Aux Box Pigtail Cable
DisplayPort Plug, Receptacle, with Dual 2X Calibration
with 18 inch Aux Box Pigtail Cable
>13.0 GHz Differential SMA Probe
Keithly RF Switch.
Model Number: S46T – BBBB0000UUUUA
Data Sheet
Contact Tektronix:
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* European toll-free number. If not accessible, call: +41 52 675 3777
Updated 10 February 2011
For Further Information. Tektronix maintains a comprehensive, constantly expanding
collection of application notes, technical briefs and other resources to help engineers working
on the cutting edge of technology. Please visit www.tektronix.com
Copyright © Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents,
issued and pending. Information in this publication supersedes that in all previously published material.
Specification and price change privileges reserved. TEKTRONIX and TEK are registered trademarks of
Tektronix, Inc. All other trade names referenced are the service marks, trademarks, or registered trademarks
of their respective companies.
10 Nov 2011
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