User`s guide
46 N9320A Spectrum Analyzer
3 Functions and Measurements
5 Turn off the signal track function:
Press   > Signal Track (Off)
6 Measure the excursion of the signal with maximum hold:
Press   > Max Hold
As the signal varies, maximum hold maintains the maximum 
responses of the input signal. Annotation on the left side of 
the screen indicates the trace mode. For example, M1 S2 S3 
indicates trace 1 is in maximum- hold mode, trace 2 and 
trace 3 are in store- blank mode.
7 Activate trace 2 and change the mode to continuous sweep:
Press   > Select Trace > Trace 2
Press  Clear Write
Trace 1 remains in maximum hold mode to show any drift 
in the signal.
8 Slowly change the frequency of the signal generator. Your 
analyzer display should look similar to Figure 15.
Figure 15 Viewing a Drifting Signal With Max Hold and Clear Write
Frequency
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