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4
Making Measurements
3 Change the center frequency to the value of the
first harmonic:
•
•
4 Change the span to 50 MHz and re- center the
signal:
•
•
•
5 Set the attenuation to 0 dB:
•
•
6 To determine whether the harmonic distortion
products are generated by the analyzer, first save
the trace data in trace 2 as follows:
•
•
7 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:
•
•
•
Please refer to
stored data in trace 2 and the measured data in
trace 1. The Marker indicator reads the difference
in amplitude between the reference and active
markers.
8 Press [AMPTD] > {Attenuation} > 10 > {dB} to
increase the RF attenuation to 10 dB.
56
Press [MARKER] > {Peak Search}.
Press [MARKER] > {Marker To} > {To Center}.
Press [SPAN] > 50 > {MHz}.
Press [MARKER] > {Peak Search}.
Press [MARKER] > {Marker To} > {To Center}.
Press [AMPTD] > {Attenuation} > 0 > {dB}.
Press [MARKER] > {Marker To} > {To Ref}.
Press [TRACE] > {Trace (2)}.
Press [TRACE] > {Clear Write}.
Press [TRACE] > {View}.
Press [MARKER] > {Peak Search}.
Press [Marker] > {Delta}.
Figure
12, the screen shows the
N9340A User's Guide
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