Keysight Technologies N9340B, User Manual

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Making Measurements
Making Distortion Measurements
49
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 present on
the measured signal. Use trace and the RF attenuator to
determine which signals, if any, may be internally
generated distortion products.
In this example, a signal from a signal generator is used
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] > 400 > {MHz}
• Press [SPAN] > 700 > {MHz}
The signal produces harmonic distortion products
(spaced 200 MHz from the original 200 MHz signal)
Figure 4-12 Harmonic distortion