Keysight N9923A, Руководство пользователя, Страница: 107 / 276

Keysight N9923-90001 User’s Guide
107
Calibration for NA, CAT, and VVM Modes
—The connector choices that are offered depend on the frequency range.
For example, if you have selected a frequency range that exceeds 18
GHz, the only connector options you will be presented with in
QuickCal are 'other 50 ohm' or 'other 75 ohm'. This is because 3.5
mm connectors, which go beyond 18 GHz, are not supported with
QuickCal.
— For each DUT port:
—Select the connector type of the DUT using the arrows or rotary
knob.
—Press
Change Gender
to change the gender of the DUT connector.
—Press
Next
… to make the selection.
—If present, press
Finish
.
—
Select/Change Cal Type
. The FieldFox always RECOMMENDS a Cal Type
that will quickly and accurately calibrate all of the displayed S-parameters.
The other Cal Types that are listed will NOT necessarily calibrate all of the
displayed S-parameters. Learn more about Cal Types in
“Calibration Type”
on page 114
.
—Using the arrows or rotary knob, select a Cal Type, then press
Select
and
Finish
.
— Press
Start Calibration
No Connection
— Disconnect the DUT from the FieldFox.
— If a jumper cable or adapter is required to connect the DUT to the FieldFox,
connect those components to the FieldFox test ports connectors. The
effects of those components will be measured and removed during the
calibration, and only the effects of the DUT will be displayed in the
measurement results. These should be high-quality components!
— Do NOT connect anything at the cal reference plane where the DUT
connects.
— Press
Measure
Optionally Connect Load(s)
— Connect a Load standard at the point where the DUT will be connected and
press
Measure
under the following conditions:
—When a jumper cable has too much loss. If a ‘Cal Failed’ error appears
and you skipped the Load measurement, then perform the Cal again
but include measuring the Load.