Reducing Trace Noise; Turning On Smoothing - Agilent Technologies ENA Series User Manual

Rf network analyzers

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Optimizing Measurements

Reducing Trace Noise

Any of the following methods can be used to lower the trace noise.

For more about sweep averaging and the IF bandwidth, see "Turning on Sweep Averaging"

on page 395 and "Narrowing the IF bandwidth" on page 394.

Smoothing can be used to reduce noise that has relatively small peaks. By turning on

smoothing, the value of each point on a trace is represented by the moving average over the

values of several nearby points. The smoothing aperture (percentage of sweep span)

defines the range of points to be included in the calculation of the moving average.

You can define the smoothing trace by trace.

Effects of smoothing (log magnitude format)

Turning on sweep averaging

Turning on smoothing

Narrowing the IF bandwidth

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