Agilent Technologies N9340A - Manual (Page 58)

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