User`s guide

30 N9320A Spectrum Analyzer
3 Functions and Measurements
Measuring Multiple Signals
This section provides the information on how to measure
multiple signals.
Comparing Signals on the Same Screen Using Marker Delta
This analyzer delta marker function lets you compare two
signals when both appear on the screen at one time.
In the following example, harmonics of the 10 MHz reference
signal available at the rear of the analyzer is used to
measure frequency and amplitude differences between two
signals on the same screen. Delta marker is used to
demonstrate this comparison.
1 Preset the analyzer:
Press > Preset (With Preset Type of Factory)
2 Connect the rear panel REF OUT to the front panel RF IN.
3 Set the analyzer center frequency, span and reference level
to view the 10 MHz signal and its harmonics up to 50 MHz:
Press > 30 > MHz
Press > 50 > MHz
Press > 10 > dBm
4 Place a marker at the highest peak on the display (10 MHz):
Press
The marker should be on the 10 MHz reference signal. Use
the Next Pk Right and Next Pk Left softkeys to move the marker
from peak to peak.
5 Anchor the first marker and activate a second marker:
Press
> Delta > Delta (On)
The label on the first marker now reads 1R, indicating that it
is marking the reference point.
6 Move the second marker to another signal peak using the
front- panel knob or by using Peak Search.
Preset/
System
Frequency
SPAN
Amplitude
Peak
Search
Marker