Keysight M8000 Series of BER Test Solutions User Guide 505
Working with Measurements 8
• Peak Peak Noise: The peak-to-peak Noise is calculated as:
Note that the Threshold Margin depends on the position of the BER
Threshold.
• Signal/Noise Ratio (RMS): The RMS Signal-to-Noise Ratio is
calculated as:
• Signal/Noise Ratio (Peak Peak): The peak-to-peak Signal-to-Noise
Ratio is calculated as
Note that the Peak-to-Peak Noise depends on the position of the BER
Threshold.
Q Factor Results
The numerical Q-factor parameters are defined as follows:
• Q Factor: The Q-factor is calculated as:
where μ1,0 is the mean level of the 1 and 0 rails, respectively, and
1,0 is the standard deviation of the noise distribution on the 1 and 0
rails.
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