Keysight Technologies N9321C User Manual page 47

If the signal peak is not present on the display, increase the
frequency span out to 20 MHz, turn signal tracking on, decrease
the span back to 2 MHz and turn signal tracking off:
Press Span > 20 > MHz
Press Peak Search
Press Span > 2 > MHz
Figure 3-5 Unresolved Signals of Equal Amplitude
4 Change the resolution bandwidth (RBW) to 100 kHz so that the
RBW setting is less than or equal to the frequency separation of the
two signals:
Press BW > 100 > kHz
Notice that the peak of the signal has become flattened indicating
that two signals are present.
5 Decrease the video bandwidth to 3 kHz:
Press BW > Video BW > 3 > kHz
Two signals are now visible as shown in
front-panel knob or arrow keys to further reduce the resolution
bandwidth and better resolve the signals.
Functions and Measurements
Measuring Multiple Signals
Figure 3-6
. Use the
39