Agilent Technologies N9340A - Manual (Page 57)

Making Measurements 4
N9340A User’s Guide 55
Making Distortion Measurements
This section provides information on measuring
and identifying signal distortion
.
Identifying Analyzer Generated Distortion
High level input signals may cause analyzer
distortion products that could mask the real
distortion measured on the input signal. Use trace
and the RF attenuator to determine which signals,
if any, are internally generated distortion products.
In this example, use a signal from a signal
generator to determine whether the harmonic
distortion products are generated by the analyzer.
1 Input a signal (200 MHz, –10 dBm) to the
analyzer
RF IN connector.
2 Set the analyzer center frequency and span:
•
Press
[PRESET]. (Factory Preset)
•
Press
[FREQ] > {Center Freq} > 400 > {MHz}.
•
Press
[SPAN] > 700 > {MHz}.
The signal produces harmonic distortion products
(spaced 200 MHz from the original 200 MHz signal)
Figure 11 Harmonic Distortion