User`s guide

44 N9320A Spectrum Analyzer
3 Functions and Measurements
Notice that the readout in the active frequency function
changes while the counted frequency result (upper- right
corner of display) does not. To get an accurate count, you do
not need to place the marker at the exact peak of the signal
response.
6 Change counter resolution:
Press
> Function > Freq Counter > Resolution
The frequency- counter resolution ranges from 1 Hz to 1 kHz.
7 Turn off the marker counter:
Press
> Function > Freq Counter > Freq Counter (Off).
NOTE
Frequency counter properly functions only on CW signals or discrete
spectral components. The marker 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.