Agilent Technologies N4413A User Manual page 121

Enter settings for Frequency, Source Power, Averaging, and IF Bandwidth that are
consistent with the capabilities of the equipment, the needs of the test, and the operating
parameters of the DUT. See the passive and active device characterization examples in
to Characterize Passive Devices" on page 57
page 58.
IF bandwidth selections can only be changed by clicking on the arrows next to the box. While
the Atten box allows direct entry, only increments from 0 to 70 dB are supported. All other
boxes allow direct entry. The attenuator box is only displayed on systems using the N4413A
and N4414A test sets. In systems using other test sets, the attenuator is coupled to the source
power setting.
NOTE Changing the attenuator setting after calibration will result in an invalid
calibration. If the attenuator setting is changed and then reset to the calibrated
value, measurement accuracy will be degraded. The attenuator is optional. The
Atten control will have no effect if you do not have the attenuator installed.
Sweep mode sets the VNA to step mode or swept mode. Criteria for choosing the sweep mode
is described in the VNA documentation.
Chapter 5
and "How to Characterize Active Devices" on
Menu Reference
Setup Menu
"How
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