CCDF (DOCSIS 4.0 Upstream)
The trace data displays the complementary cumulative distribution function (CCDF) for the selected input channel.
The CCDF is computed from the segment of the OFDM signal specified by the Measurement Interval and Measurement Offset.
Interpreting Trace Results
The CCDF trace ordinates are units of percent (%) for the y-axis and power (dB) for the x-axis. Power on the x-axis is relative to the signal average power, so 0 dB is the average power of the signal. Therefore, a marker readout of
Trace A Marker 2 dB 12 %
means there is a 12% probability that the signal power will be 2 dB or more above the average power.
For more information, see CCDF trace data (Reference book).
See Also
Available Trace Data (DOCSIS 4.0 Upstream)
