100G-TXE Compliance Solution for Real-Time Oscilloscopes

100GBASE-KR4, 100GBASE-CR4, & CAUI-4

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The TekExpress 100G-TXE provides turnkey testing and debug solutions for IEEE 802.3bj (100GBASEKR4/100GBASE-CR4) and IEEE 802.3bm (CAUI-4) electrical standards. These three electrical standards make-up the backbone of the current 100G Ethernet industry.

Key Features
  • 100G-TXE offers streamlined and fully automated transmitter characterization of 802.3bj (100GBASE-KR4/100GBASE-CR4) electrical transmitter specifications and 802.3bm (CAUI) specifications
  • Extends DPOJET for low level debug into 100GBASEKR4/100GBASE-CR4 and CAUI-4  1.

1CAUI-4 is also known as CAUI

Applications
  • Electrical transmitter measurements
  • Validation of 100GBASE-KR4/100GBASE-CR4 and CAUI-4 

IEEE 802.3bj (100GBASE-KR4) electrical real-time transmitter measurements fully automated

Mapping of TP0a 100GBASE-KR4 measurement
Parameter Subclause reference Value Units
Signaling rate 93.8.1.2  25.78125±100 ppm GBd
Differential peak-to-peak output voltage (max)
Transmitter disabled 93.8.1.3  30  mV
Transmitter enabled 93.8.1.3  1200  mV
DC common-mode output voltage (max) 93.8.1.3  1.9  V
DC common-mode output voltage (min) 93.8.1.3  V
AC common-mode output voltage (RMS, max) 93.8.1.3  12  mV
Output waveform
steady-state voltage vf (max) 93.8.1.5.2  0.6  V
steady-state voltage vf (min) 93.8.1.5.2  0.4  V
Linear fit pulse peak (min) 93.8.1.5.2  0.71 x vfV
Normalized coefficient step size (min) 93.8.1.5.4  0.0083  -
Normalized coefficient step size (max) 93.8.1.5.4  0.05  -
Pre-cursor full-scale range (min) 93.8.1.5.5  1.54  -
Post-cursor full-scale range (min) 93.8.1.5.5  -
Coefficient initialization ratio
(c(0)+c(1)-c(-1))/(c(0)+c(1)+c(-1)) 93.8.1.5.3  1.29±10% -
(c(0)-c(1)+c(-1))/(c(0)+c(1)+c(-1)) 93.8.1.5.3  2.57±10% -
 
Signal-to-noise and distortion ratio (min) 93.8.1.6  27  dB
Output jitter (max)
Even-odd jitter 93.8.1.7  0.035  UI
Effective bounded uncorrelated jitter, peak-to-peak 93.8.1.7  0.1  UI
Effective total uncorrelated jitter, peak-to-peak 93.8.1.7  0.18  UI


TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet


Transmitter test fixture and test points

IEEE 802.3bj (100GBASE-CR4) electrical real-time transmitter measurements fully automated

Mapping of TP2 100GBASE-CR4 measurement
Parameter Subclause reference Value Units
Differential peak-to-peak output voltage (max) with Tx disabled 92.8.3.1  35  mV
DC common-mode output voltage (max) 92.8.3.1  1.9  V
AC common-mode output voltage, vcmi (max., RMS) 92.8.3.1  30  mV
Differential peak-to-peak voltage, vdi (max.) 92.8.3.1  1200  mV
Transmitter waveform
Transmitter steady-state voltage, vf (min) 92.8.3.5.2  0.34  V
Transmitter steady-state voltage, vf (max) 92.8.3.5.2  0.6  V
Linear fit pulse peak (min) 92.8.3.5.2  0.45 × vfV
Transmitted waveform
abs coefficient step size (min) 92.8.3.5.4  0.0083  -
abs coefficient step size (max) 92.8.3.5.2  0.05  -
minimum precursor full-scale ratio 92.8.3.5.5  1.54  -
minimum post cursor full-scale ratio 92.8.3.5.5  -
Coefficient initialization ratio
(c(0)+c(1)-c(-1))/(c(0)+c(1)+c(-1)) 92.8.3.5.3  1.29±10% -
(c(0)-c(1)+c(-1))/(c(0)+c(1)+c(-1)) 92.8.3.5.3  2.57±10% -
 
Signal-to-noise and distortion ratio (min) 92.8.3.5.7  26  dB
Output jitter (max.)
Even-odd jitter, peak-to-peak 92.8.3.8.1  0.035  UI
Effective bounded uncorrelated jitter, peak-to-peak 92.8.3.8.2  0.1  UI
Effective total uncorrelated jitter, peak-to-peak 92.8.3.8.2  0.18  UI
Signaling rate per lane 92.8.3.9  25.78125±100 ppm GBd
Unit interval nominal 92.8.3.9  38.787879  ps


TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet


Transmitter test fixture and test points

IEEE 802.3bm (CAUI-4) electrical real-time transmitter measurements fully automated

Mapping of TP1a CAUI-4 measurement
Parameter Subclause reference Value Units
Signaling rate per lane (range) 83E.3.1.1  25.78125 ± 100 ppm GBd
DC common-mode output voltage (max) 83E.3.1.2  2.8  V
DC common-mode output voltage (min) 83E.3.1.2  –0.3  V
Single-ended output voltage (max) 83E.3.1.2  3.3  V
Single-ended output voltage (min) 83E.3.1.2  –0.4  V
AC common-mode output voltage (max, RMS) 83E.3.1.2  17.5  mV
Differential peak-to-peak output voltage (max)
Transmitter disabled 83E.3.1.2  35  mV
Transmitter enabled 83E.3.1.2  900  mV
 
Eye width (min) 83E.3.1.6  0.46  UI
Eye height A, differential (min) 83E.3.1.6  95  mV
Eye height B, differential (min) 83E.3.1.6  80  mV
Transition time (min, 20% to 80%) 83E.3.1.5  10  ps
Mapping of TP4 CAUI-4 measurement
Parameter Subclause reference Value Units
Signaling rate per lane (range) 83E.3.1.1  25.78125 ± 100 ppm GBd
AC common-mode output voltage (max, RMS) 83E.3.1.2  17.5  mV
Differential output voltage (max) 83E.3.1.2  900  mV
Eye width (min) 83E.3.2.1  0.57  UI
Eye height, differential (min) 83E.3.2.1  228  mV
Vertical eye closure (max) 83E.4.2.1  5.5  dB
Transition time (min, 20% to 80%) 83E.3.1.5  12  ps
DC common mode voltage (min) 183E.3.1.2  –350  mV
DC common mode voltage (max)183E.3.1.2  2850  mV

TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet


Transmitter test fixture and test points

Host Control Board (HCB) and Module Control Board (MCB) are for test points TP1a and TP4 respectively.

1DC common mode voltage is generated by the host. Specification includes effects of ground offset voltage.

Optional system probing setup

The bandwidth requirements of 100GBASE-KR4 are difficult to match with the browser or soldered down probes. However, for debug purposes, these 33 GHz and lower probes offer effective signal access on backplanes and chip-to-chip interconnects.


TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet



TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet


Backplane and chip-to-chip interconnects can be a significant probing challenge.

Electrical system interconnect setup

Direct electrical connections through a precision fixture or 2.92 mm interconnects are the preferred method to access the backplane and cabled signals. The QSFP28 module interconnect point found on 100GBASE-CR4 and CAUI-4 designs are the most typical signal access points.


TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet

Refer to the Wilder Technologieswww.wilder-tech.com/qsfp-28-kits.htmfor details regarding the various methods of signal break-out.

100GBASE-KR4/100GBASE-CR4 measurement selection

The setup and test execution is simple with the 100G-TXE software. The oscilloscope acquisition and analysis are controlled through the 100G-TXE automation solution. The Graphical User Interface (GUI) provides an intuitive and easily repeatable workflow for setup and testing.


TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet


TekExpress ® 100GBASE-KR4 measurement setup

Alternately, a similar set of measurements without the Standards pass or fail criteria and reporting tools can be found as extensions to the DPOJET product. These would serve the debug user, rather than the compliance user.


TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet


DPOJET Standard: 100GBASE-KR4 measurement setup

Design characterization is supported beyond 100GBASE-KR4/100GBASE-CR4/CAUI-4 compliance requirements for all measurements. The TekExpress 100G-TXE offers flexible control over test configurations such as analysis windows and other parameters. User-defined mode lets customers make changes to the test limits and perform marginal testing beyond compliance.

User-defined mode

In user-defined mode, users can configure Global parameters, test specific parameters, measurement repeat parameters, and notification parameters. This supports characterization measurements rather than developing custom lab setups, reducing testing time, and complexity.


TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet


Reports & measurement results


TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet



TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet



TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet



TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet



TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet


Certifications

 

CE Marking Not Applicable.

TekExpress-100G-TXE-for-Real-Time-Scopes-Datasheet
Tektronix is registered to ISO 9001 and ISO 14001 by SRI Quality System Registrar.

Ordering information

Models
To order 100G-TXE (100GBASE-KR4/100GBASE-CR4) & CAUI-4 permanent node locked license With a DPS70KSX Real-Time Oscilloscope
Oscilloscope DPS77704SX, DPS75904SX, DPS75004SX, DPS73308SX option 100G-TXE
To order 100G-TXE (100GBASE-KR4/100GBASE-CR4) & CAUI-4 permanent node locked license With a DPO70KDX Real-Time Oscilloscope
Oscilloscope DPO72304DX, DPO72504DX, DPO73304DX option 100G-TXE
To order 100G-TXE (100GBASE-KR4/100GBASE-CR4) & CAUI-4 permanent node locked license With a MSO70KDX Real-Time Oscilloscope
Oscilloscope MSO72304DX, MSO72504DX, MSO73304DX option 100G-TXE
To order 100G-TXE (100GBASE-KR4/100GBASE-CR4) & CAUI-4 permanent node locked license With a DPO70KSX Real-Time Oscilloscope
Oscilloscope DPO72304SX, DPO72504SX, DPO73304SX option 100G-TXE
To order 100G-TXE (100GBASE-KR4/100GBASE-CR4) & CAUI-4 on a Floating License (any Real-Time Oscilloscope listed above)
DPOFL-100G-TXE
To order 100G-TXE (100GBASE-KR4/100GBASE-CR4) & CAUI-4 on a Free 30-Day Trial License (any Real-Time Oscilloscope listed above)
DPOFT-100G-TXE
Recommended products
Probes
Tek P7633 (33 GHz) or Tek P7720 (20 GHz) probe
Fixture
Wilder MCB/HCB QSFP+ Breakout fixture (640-0786-000)
Last Modified: 2017-09-06 05:00:00
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