Keysight A Series User Manual page 148

Calibration for NA, CAT, and VVM Modes
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
Normalize uses a THRU standard or cable between port 1 and port 2 to cal an
S21 and S12 Transmission measurement (NA Mode) and a 2-port Insertion
Loss measurement (CAT Mode). In VVM Mode, this is performed using Zero.
When a Normalization is performed, the forward and reverse transmission
tracking terms from CalReady are updated to account for the THRU that is
used during the normalization process.
How to perform a Simple Response Cal
1. Select the measurements to be calibrated. See the relevant Mode (NA,
2. Press Cal 5 then
3. For 1-port measurements:
4. For 2-port measurements:
With a Normalization Cal, all subsequent insertion loss measurements are
made relative to the insertion loss of the cable used as the THRU standard.
For example, if you use a cable with 1 dB of loss, then after Normalization,
the display will show 0 dB of loss with this cable in place. Therefore, for
highest accuracy, when measuring the DUT also attach the cable that was
used in the normalization cal.
5. Press Finish.
6. Connect the DUT.
CAL ON U
correcting ONLY the appropriate measurement. For example, when an Open
Response Cal on Port 2 is performed,
measurement only.
148
"Calibration Type" on page
CAT, or VVM) for measurement selections.
Response Cal
— Select either Open Response
calibrated. The availability of this calibration on Port 2 may require
an option.
— Connect an OPEN or SHORT standard to the specified port and
press Measure
— Select Normalization
— Connect a short, high-quality, phase stable cable between the
FieldFox port 1 and port 2 connectors, then press
is shown on the screen when a User Cal (Ex: Response Cal) is
149.
or Short Response
CAL ON U is shown for an S22
Keysight N9927-90020 User's Guide
for the port to be
Measure