HP 8591C User Manual page 102

Procedure for System
The following is an outline for measuring system flatness using two points in
Flatness Measurement
the system. For example, a reference trace could be taken at the headend,
then compared to a flatness measurement made somewhere out in the
system.
1. Take a reference trace at point A as previously described (for example, at
2. Go to point B and make a measurement. The result is the difference
the headend or first trunk ampliEer).
between points A and B.
channels are present.
Channel Measurements
Making Channel Measurements
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