Keysight Technologies N9322C User Manual page 62

Functions and Measurements
Making Distortion Measurements
54
The signal produces harmonic products (spaced 200 MHz
from the original 200 MHz signal) in the analyzer input
mixer as shown in
4
Change the center frequency to the value of the first
harmonic:
Press Peak Search > Next Peak
Press Marker > Marker To > Mkr -> CF
5
Change the span to 50 MHz and re- center the signal:
Press Span > 50 > MHz
Press Peak Search
Press Marker > Marker To > Mkr -> CF
6
Set the attenuation to 0 dB:
Press Amplitude > Attenuation > 0 > dB
7
To determine whether the analyzer generates harmonic
distortion products, first display the trace data in trace 2 as
follows:
Press Trace/Det > Select Trace > Trace 2
Press Clear Write
8
Allow trace 2 to update (minimum two sweeps), then store
the data from trace 2 and place a delta marker on the
harmonic of trace 2:
Press Trace/Det > View
Press Peak Search
Press Marker > Mode > Delta
The analyzer display shows the stored data in trace 2 and
the measured data in trace 1. The MarkerΔ indicator reads
the difference in amplitude between the reference and active
markers.
9
Increase the RF attenuation to 10 dB:
Press Amplitude > Attenuation > 10 > dB
Figure 3-16
.