Keysight Technologies N9330B, User Manual

Page: 57 / 107

Using Functions
Some Helpful Hints
51
Adjust amplitude scale
Adjusting the amplitude scale can improve the clarity
and view ability of the amplitude of a trace. the following
methods are for adjusting the amplitude scale:
• Pressing
[Auto Scale]
hardkey automatically adjust the
amplitude scale to best fit the current trace view.
• Pressing
[AMPTD] > {Top}
, or
[AMPTD] > {Bottom}
manually set the amplitude scale.
Using single sweep
Using single sweep allows you to get an isolated return
loss signal. In a single sweep, the tester sweeps from the
start to the stop frequency/distance for only one time,
and holds the trace static.
Key access:
[MEAS/View] > {Single}
Enabling interference immunity
Other signals can interfere with Return Loss/SWR
measurement. You can minimize the effect of the
interference on the measurement by activating
interference immunity in the tester.
Key access:
[MEAS/VIEW] > {IIM}
NOTE
Use of interference immunity increases the measurement time.
Interference immunity should be used if a known interference
signal exists or the Return Loss/SWR measurement displays
suspicious characteristics, such as a spike or rapid movements in
the noise floor.