Agilent Technologies N9320A Guide de l'utilisateur télécharger pdf (Page 50)

42 N9320A Spectrum Analyzer

3 Functions and Measurements

Trace Averaging

Averaging is a digital process in which each trace point is

averaged with the previous average value for the same trace

point.

Selecting averaging, when the analyzer is auto- coupled,

changes the detection mode to Sample, smoothing the

displayed noise level.

1 Refer to the first procedure “Reducing Input Attenuation” of

this chapter and follow steps 1, 2 and 3.

2 Turn average on:

Press > Average (On)

3 Set the number of averages to 20:

Press 20,

Since the averaging routine smooths the trace, low level

signals become more visible (see Figure 13).

Figure 13 Trace Averaging

NOTE

This is a trace processing function and is not the same as using the

average detector (as described on page 41).

BW/

Avg

Enter

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Agilent Technologies N9320A Guide de l'utilisateur Page 50