Keysight M8000 Series of BER Test Solutions User Guide 533
Working with Measurements 8
• Eye Width: The horizontal measurement of the eye opening at a
specified BER Threshold.
Note: The Eye Width is calculated according to the BER Threshold set
in the View Tab. Eye Width is calculated as per the selection of either
Width at Crossing Point or Custom defined Width.
• Jitter Peak-Peak: Full width of the histogram at the eye crossing point
with respect to BER threshold.
Note: The Jitter P-P is calculated according to the BER Threshold set
in the Parameter window.
• Jitter RMS: A standard deviation of the crossing point histogram with
respect to BER threshold.
Note: The Jitter RMS is calculated according to the BER Threshold set
in the Parameter window.
• Cross Voltage: Crossing percentage is a measure of the amplitude of
the crossing points relative to the 1 level and 0 level.
Note: The Cross Voltage is calculated according to the BER Threshold
set in the Parameter window.
• Signal to Noise Ratio: In signal-to-noise, the "signal" is the information
power of the signal indicated by the difference between the ‘1’, and ‘0’
level. The "noise" is the combined standard deviations of the ‘1’ level
spread, and the ‘0’ level spread.
• Duty Cycle Distortion: This value is the difference between the period
of a 1 bit and a 0 bit.
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