Improving Frequency Resolution And Accuracy - Keysight Technologies N9321C User Manual

Improving Frequency Resolution and Accuracy

N O T E

Improving Frequency Resolution and Accuracy

This section provides information on using the frequency counter
function to improve frequency resolution and accuracy.
Press Preset (With Preset Type of DFT)
1
Connect a cable from the front panel CAL OUT to RF IN;
2
Press System > Service > Calibration > CAL OUT ON to toggle on and
enable the 50 MHz amplitude reference signal.
Press Frequency > Auto Tune.
3
The analyzer will detect the signal peak and locate it to the center
of the display (Refer to
4 Turn the frequency counter on:
Press Marker > Function > Counter.
5 Move the marker, with the front-panel knob, half-way down the
skirt of the signal response.
Figure 3-14Using Frequency Counter
The frequency and amplitude of the marker appears in the active
function area (this is not the counted result). The counted result
appears in the upper-right corner of the display to the right-side of
C1.
Functions and Measurements
"Auto Tune" on page 115).
Counted
result
49