Tektronix SDXUP, SDX100 DATASHEET

SerialXpress®– Advanced Jitter Generation for AWG

SDX100, SDXUP Data Sheet

Programmable pre/de-emphasis and preshoot: Most of the next-generation standards like PCIe, 10GbE, SAS, or USB 3.0 need more than one tap for pre/de-emphasis signal generation. The

s Advanced Pre/De-emphasis feature offers the ultimate in

mpliance testing of high-speed

Features & Beneﬁts

Flexibility: Jitter generation has become so ﬂexible that the user now has the freedom to try various permutations and combinations of jitter

ers like Pj, Rj, ISI, Noise, Delay, etc.

paramet

Replicate scenarios: The signals are digitally synthesized. All AWG setups can be recalled and the scenarios can be replicated on any ot her AWG within seconds.

Analog nature of digital signals: In reality all digital signals are analog in nature and hence SerialXpress exploits the capabilities of an AWG to generate real-world signals.

Ease of use: It is ea sy to integrate a multitude of Sj tones into the waveforms at no additional cost. Band-limited Rj can be injected with ease.

actor Emulation (CFE): Users can now apply any amount of

Crest F

peak pseudo-random jitter needed to their bit patterns which can reduce test times. Test cases can be repeated accurately enabling fast receiver debug cycles. SerialXpress can also create worst-case scenarios to stress receivers by accurately contro lling the Crest Factor of the random jitter.

SerialXpres ﬂexibility, giving users the ability to progra m the pre/de-emp hasis and preshoot sample by sample.

Channel emulation through cascaded S-parameter ﬁlter: Touchstone ﬁles can easily be inserted to simulate the e x act behavior of cable emulators, which can be again controlled and modiﬁed by adding jitter and other parameters. You can also tweak the imported touchstone ﬁle data to adjust the ISI and see how the receiver responds to those variations. The effect of the channel can also be de-embedded by selecting the Inverse ﬁltering option. Closed EYE can be opened up by adding the right amount of pre-emphasis or by varying the rise time. You can also cascade up to 6 touchstone ﬁles to emulate a cascaded channel that might include connectors, ﬁxtures, and channel models.

ISI Direct Dial-in: ISI can be directly dialed-in at ease. It’s no longer necessary to use FR4 traces which are inﬂexible and need frequent calibration when switching from one to another.

Presets: SerialXpress supports any emerging standard data rate from 500 Kb/s to 8 Gb/s when teamed with the appropriate Tektronix AWG. There are ready-to-use presets that allow you a head-start on your testing.

Ofﬂine mode: SerialXpress applications can run on an external PC, thereby reducing the time taken to synthesize large waveforms and leaving the AWG free for continued testing.

Applications

Design, debug, characterization, and co serial data receivers

SATA, PCIe, SAS, DisplayPort, Fibre Channel, HDMI, USB, MIPI, Receiver Testing

Data Sheet

Jitter Generation Made Easy

SerialXpress is a powerful easy-t o-use software p ackage to synthesize high-speed serial data signals for Arbitrary Waveform Generators (AWG). It runs as an integral part of the AWG5000/7000 Series arbitrary waveform generators or from an external PC.

SerialXpress enables creation of exact waveforms required for thorough and repeatable design validation, margin/characterization, and conformance testing of high-speed serial data receivers. It considerably simpliﬁes the signal creation and jitter simulations, thus reducing overall development and test time.

SerialXpress, in addition to supporting g eneration of jitter (Random, Periodic (Sinusoidal), Inter Symbol Interference (ISI), and Duty Cycle Distortion (DCD)), also supports Spread Spectrum Clocking (SSC), pre-emphasis, and noise addition. This allows the user to create a combination of various impairments simultaneously to stress the receiver. Se rialXpress also allows the waveforms to be captured from Tektronix oscilloscopes and to be replayed using arbitrary waveform generators.

A programmatic interface enables easy integration of SerialXpress into test automation systems.

Scrambling, PWM, 4-PAM, and 8b/10b Encoding

The input data pattern can be scrambled by deﬁning a polynomial. The user could enable the 8b/10b encoding option if the input pattern is in 8-bit word format before applying other im pairment s like jitter, SSC, and ISI. Users can also deﬁne the pattern duty cycle using the P ulse Width Modulation (PWM) feature, which allows for alternatively e ncoding the bit stream to 4-PAM.

Jitter Addition

Up to 4 different sinusoidal jitters with different amplitudes, frequencies, and phases can be adde d to the base pattern. Three independent band-limited random jitters can also be added to the base pattern.

SSC Modulation

SSC can be a modulation, and df/dt. It supports Triangular, Sinusoidal, and Custom SSC proﬁles, where the custom SSC proﬁle allows you to import your own user-deﬁned proﬁle by literally allowing any kind of shape to be added as SSC to the base pattern. You can also deﬁne the exact location and duration of df/dt on the SSC slope.

dded with precisely controlled proﬁle, spread, deviation,

Advanced Pre/De-emphasis and Noise

Many standards such as PCIe require the output waveform to b e pre/de-emphasized. SerialXpress allows easy add ition of pre/de-emphasis, including preshoot, with all other jitter parameters. Vertical noise can also be added at both

near and far end of th e channel.

ISI Creation

SerialXpress allows creation of ISI in two ways. First, the ISI value can be directly di Tektronix sampling oscilloscope or a vector network analyzer can be directly convolved with the base pattern to recreate the channel characteristics. By applying inverse ﬁltering the effects of the channel can be de-embedded from the system. Also, ISI within the S-parameter can be scaled upwards or downwards, which will alter the characteristics of th e channel.

aled-in. Second, an S-parameter ﬁle generated from a

Delay

SerialXpress allows users to introduce delay to the waveform, and this feature can also generate skew between channels or patterns.

Base Pattern

SerialXpress is bundled with several sample patterns for various standards like SATA, Display Port, SAS, PCIe, HDMI, USB, MIPI, and Fibre Channel. Patterns ca loaded as a ﬁle.

Idle State*

Standards followed by a b urst. Now the user can directly create this idle state without the need of using additional power dividers. Noise and offset can also be added to these idle state waveforms. Idle state can also be deﬁned as a part of pattern deﬁnition.

n also be directly entered in a Binary, Symbol, or Hex editor or

like SATA call for OOB signaling which requires idle state

Calibration

SerialXpress has a built-in calibra tion routine which controls a Tektronix oscilloscope and calibrates the output of the AWG for periodic jitter and random jitter, reducing the need for time-consuming manual calibration.

Bandwidth Expansion Filter

Rise time of the AWG can be expanded further by applying the bandwidth expansion ﬁlter. For example, when used with AWG7122C and Option 06, this comp the bandwidth up to 9 GHz.

*1When idle state (z) is included in the pattern deﬁnition, no jitter is applied.

ensates for the DAC roll-off at higher frequencies and extends

2 www.tektronix.com/signal_generators

Marker Outputs

Marker outputs can be conﬁgured to be the same as the input base pattern or to generate clocks at a user-deﬁned frequency including subdata rates.

Batch Processing

When more than one patte rn needs to be synthesized, you can use batch processing that enables creation of multiple waveforms with a combination of random jitter and sinusoidal jitter with a maximum of 4 different fre

quencies.

SDX100, SDXUP

Overview Win

dow

Overview window

All the jitter parameters can be switched ON/OFF from th e Overview window.

Characteristics

User Interface – Can reside and run on either Windows XP Professional or Windows

Vista.

Compatibility for Import of Waveform/Pattern Files

Tektronix TDS6000, DSA/DPO70000, MSO70000, and DSA/DPO700 0 Series oscilloscopes.

Tekt r o ni x D

ata Timing Generators DTG500 0 Series

Instrument Control

Characteristic

Tektronix A rbitrary Waveform Generators

Controls SerialXpress®runs on an external PC or an integral part of the AWG5000/7000 Series. Waveform transfer and control of the

Analog Digital markers Amplitude High, Low, and Delay

Tektronix Oscilloscopes

Controls Remote control Tektronix oscilloscope parameters from SerialXpress

General settings Run, Stop, Single, and Autoset Vertical settings Horizontal settings

Description

AWG5000/7000 Series can be performed directly from SerialXpress Interleave and Zeroing ON/OFF, DAC Resolution, Sampling Frequency, Amplitude, Offset, Run, Stop, and Channel Output ON/OFF

Channel, Scale Scale, Record Length, Sampling Rate

SerialXpress for Jitter Creation

ption

Characteristic

Mode

ata

Base D

Standard patterns

SATA Idle state, LFTP, MFTP, HFTP, SFCPAlignR12, SFCPAlignR12-badbit, Gen1R12FCP4A, Gen1R25FCP4A, Gen1R10FCP2AnewLBP,

PCIe Compliance Pattern SA S CJ TPAT, J TPAT RD +, JTPAT R D– Display port HDMI Fibre channel USB minadd1N,minadd1P,TSEQ,CPO,CP1,CP2,CP3,CP4,CP6,CP8,BERC,BRST MIPI

General Clock, PRBS (7, 9, 15, 16, user deﬁned) File Input Pattern Editor Data Rate Encoding Pulse Width Modulation

T_Minor 0 to 0.5 UI

Rise Time

DCD

Descri

Single, Sequence

Gen1R10FCP2AnewLBPErr, Gen2R8FCP2AnewLBP, Gen2R8FCP2AnewLBPErr, LTDP RD–, LTDP RD+, HTDP RD–, HTDP RD+, LFSCP RD–, LFSCP RD+, SSOP RD–, SSOP RD+, LBP, COMP RD–, COMP RD+

PRBS7, D24.3, D10.2, Frequency Lock, and Symbol Lock 480P Gray RGB, 720P Gray RGB, 1080P 8-bit Gray RGB, 1080P 10-bit Gray RGB, 1080P 12-bit Gray RGB JT PAT, CJ TPAT, S PAT, CS PAT

CJTPAT_FC, Clock

Annotated .txt – Binary (1, 0, z) and Symbol (D, K, z words)* Binary, Hex, Symbol 500 Kb/s to 8 Gb/s (direct synthesis with ×3 oversampling) and 12 Gb/s (binary data with ×2 oversampling)

NRZ, NRZI, 4-PAM* ON/OFF

10/90, 20/80 1/samplingrateto1/datarate

0to1UI

, 8B/10B with starting disparity RD+, RD–

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