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and the analyzer input.
The coupler should have a high degree of isolation
N O TE
between the two input ports so the sources do not
intermodulate.
2 Set one source (signal generator) to 300 MHz
and the other source to 301 MHz, for a
frequency separation of 1 MHz. Set the sources
equal in amplitude as measured by the analyzer
(in this example, they are set to –5 dBm).
3 Set the analyzer center frequency and span:
•
•
•
4 Reduce the RBW until the distortion products
are visible:
•
5 Move the signal to the reference level:
•
•
6 Reduce the RBW until the distortion products
are visible:
•
7 Activate the second marker and place it on the
peak of the distortion product (beside the test
signal) using the Next Peak:
•
•
8 Measure the other distortion product:
•
N9340A User's Guide
Press [PRESET]. (With Preset Type of Default)
Press [FREQ] > {Center Freq} > 300.5 > {MHz}.
Press [SPAN] > 5 > {MHz}.
Press [BW/SWP] > {RBW}, and reduce the RBW
using the knob, the arrow keys or the numeric
keypad.
Press [MARKER] > {Peak Search}.
Press [MARKER] > {Marker To} > {To Ref}.
Press [BW/SWP] > {RBW}, and reduce the RBW
using the knob, the arrow keys or the numeric
keypad.
Press [MARKER] > {Delta}.
Press [MARKER] > {Peak Search} > {Next Left
(Right) PK}.
Press [MARKER] > {Normal}.
Making Measurements
4
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