User`s guide

4 Making Measurements
48 N9340B User’s Guide
Improving Frequency Resolution and Accuracy
Using the frequency counter to improve frequency
resolution and accuracy.
1 Press [PRESET] (Factory Preset)
2 Input a signal (1 GHz, –30 dBm) to the ana-
lyzer’s RF IN connector.
3 Set the center frequency to 1 GHz and the span
to 5
MHz.
4 Press [MARKER] > {More} > {Mode} > {Freq Count} to
turn the frequency counter on.
5 Move the marker by rotating the knob, to a point
half- way down the skirt of the signal response.
6 Press [MARKER] > {More} > {Mode} > {Normal} to
turn off the marker counter.
Figure 4-12 Using the frequency counter
NOTE
Marker count properly functions only on CW signals or
discrete spectral components. The marker must be > 40 dB
above the displayed noise level.