Keysight Technologies N9322C, User Manual

Page: 48 / 214

Functions and Measurements
Measuring Multiple Signals
40
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
Figure 3-6
. Use the
front- panel knob or arrow keys to further reduce the
resolution bandwidth and better resolve the signals.