User`s guide

Functions and Measurements 3
N9320A Spectrum Analyzer 45
The marker readout in the active frequency function changes
while the counted frequency result (upper- right corner of
display) does not. For an accurate count, the marker need
not be placed at the exact peak of the signal response.
6 To change the counter resolution:
Press
> Function > Freq Counter > Resolution
The frequency- counter resolution range is from 1 Hz to 1
kHz, and may be set to Auto or Manual.
7 To turn off the marker counter:
Press
> Function > Freq Counter > Freq Counter (Off).
NOTE
The Frequency counter properly functions only on stable, CW signals
or discrete spectral components. The marker power level must be
greater than 40 dB above the displayed noise level.
Marker
Marker
NOTE
When using the frequency counter function, the ratio of the resolution
bandwidth to the span must be greater than 0.02.