Part II: Settings and Measurements
The second way to conduct reverse path sweep is with the
PNM method
, which relies on the US SC-QAM
adaptive EQ power coefficients. This function provides much higher sweep resolution, with up to 24 sweep
reference points in each of your 6.4MHz US channels (up to 8 US channels, and enables hi-res sweep traces
up to 51.2MHz wide.
In the case below, the DS2831 would perform at 8 resolution points fewer than the 192 sweep resolution
points in the Passive Sweep app offered with the DS2831.
In addition to the Sweep reference function, this mode provides individual in-channel frequency response
information, as well as Group Delay and Equalizer coefficients for each of the individual US channels.
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