Agilent Technologies N9342C, Руководство пользователя

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3 Functions and Measurements
42 N9342C/43C/44C User’s Guide
Improving Frequency Resolution and Accuracy
This section provides information on 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] > {Function} > {Counter}
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] > {Function} > {Normal}
to turn off
the marker counter.
Figure 3-12 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.