SDI Eye and Jitter Measurements
How-to Guide
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www.tektronix.com/wfm2300
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Conclusion
The status bar or the video session display provides information on the CRC errors that may be present
within the transmission link and provides the first indication that the SDI signal is getting close to the digital
cliff. The Stress Loop of the WFM2300 provides a 20m Belden 1694A cable simulation that can be added to
the link to ensure the addition of this simulated cable does not cause errors in the transmission link.
Additionally a stress signal can be added to the transmission of the SDI to see if this interfering signal causes
problems for the receiver.
Alternatively the user can select a pathological test signal to be generated from the WFM2300 to stress the
performance of the PLL or equalizer within the receiving device. The Eye and Jitter displays can be used to
inspect the performance of the SDI signal and determine possible problems within the link. While the SDI
Status displays provides a summary of the physical layer parameters and can be used to estimate the cable
length of the transmission path. Using these various techniques the physical layer characteristics of the
transmission path can be measured.
References
WFM2300 Waveform Monitors
Datasheets, fact sheets and additional product materials can be found at
http://www.tektronix.com/waveform-monitor/wfm2300
