Keysight M8000 Series of BER Test Solutions User Guide 511
Working with Measurements 8
Crosstalk
Crosstalk between adjacent signal paths modulates the vertical eye
amplitude. This narrows the voltage range of the receiver needed for
capturing data correctly.
For jitter tolerance tests, amplitude modulation is most often simulated by
modulating the data output with a sinewave signal. This is called
Sinusoidal Interference (SI).
Total Jitter
Total jitter is the sum of all kinds of jitter.
BER Setup
Table 67 BER setup description
Graph Setup
Table 68 Graph setup description
Name Description
Data Rate Displays the Data Rate for the measurement.
Target BER Sets the required target BER. The default is 1.0E-09.
Confidence Level Confidence Level = 1 – exp(-data rate * gate time * measurement
depth)
The range is 0 % to 99.9 %. The default is 95 %.
Frequency Relax Time Sets the amount of time to pause the measurement after a change
in jitter modulation frequency.
Amplitude Relax Time Sets the amount of time to pause the measurement after a change
in jitter modulation amplitude.
Name Description
Template Limits Show/hides the maximum and minimum jitter amplitude limits in
the graph.
Template Points Show/hides the template points in the graph.
Compliance Limits Show/hides the compliance curve in the graph.
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