Reducing Trace Noise; To Activate Averaging For Reducing Trace Noise - HP 8711C User Manual

You can use three analyzer functions to help reduce the effect of noise on the
data trace:
reduce system bandwidth
l
The analyzer uses a weighted running average for averaging. The noise is
reduced with each new sweep as the effective averaging factor increments.
2. Enter a value followed by [ENTER).
Averaging is explained more fully in the previous section.
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