Keysight N9923A, Руководство пользователя, Страница: 112 / 276

112 Keysight N9923-90001 User’s Guide
Calibration for NA, CAT, and VVM Modes
—
OFF
If power to the ECal module is too low, it cannot detect which
FieldFox ports it is connected to. If you are having this problem,
select OFF. Then during the calibration, the FieldFox will prompt you
to connect the ECal module ports to specific FieldFox ports.
— Optionally press
Advanced
then
Simple ECal
.
—
ON
(default) The FieldFox assumes that both ports of the ECal module
can be connected at both calibration reference planes. You therefore
receive a single prompt to connect the ECal module to both ports.
— OFF Select when physical restrictions prohibit the ECal module from
being connected to both calibration reference planes simultaneously.
You will receive separate prompts to connect the ECal module to Port
1, then to connect the ECal to Port 2.
— Press Start Calibration . When prompted, verify the ECal module
connection, then press Measure. The standards within the ECal module are
automatically connected and measured.
Simple Response Cals
Simple Response Cals are used to quickly calibrate the magnitude and phase
of a measurement using any Open, Short, or Thru component. These may be
calibration standards, but because a Cal Kit is not selected, they are not
modeled. Measurement accuracy is generally low. Use a Simple Response Cal
to make quick measurements when using a jumper cable to connect the DUT
to the FieldFox. Otherwise, CalReady is usually more accurate.
When prompted, choose a standard based on the displayed measurements to
be calibrated. For example, to calibrate S11, connect either an OPEN or
SHORT to the port 1 reference plane.
When Simple Response Cals are performed, the source match and reflection
tracking terms from CalReady are updated by the measured Short or Open that
is used during the calibration.
1-port response cals are also available from the Mechanical Cal menu. Learn
more in
“Calibration Type” on page 114
.
When prompted:
“Connect port 1 to port 2" ,
then you can connect them
however you choose, including using the internal ECal THRU. This is an
‘Unknown THRU’.When prompted:
“Connect port 1 directly to port 2" ,
then
you must connect the ports directly together at the calibration reference
plane with no adapter or other cabling. This is a ‘Flush THRU’. Learn more
in “Calibration Type” on page 114
.
You can perform a Simple Response Cal for either: S11, or S22, or S21 AND
S12.