Specifications

7-7 FOUR-PORT
CALIBRATION
Calibration using the Four-Port Calibration technique is available for
4-Port D models only. The following procedure calibrates the
MS462xD using the four-port technique.
A Two-Port calibration must be performed before proceeding with a
Four-Port Calibration. A Two-Port calibration can be one of the
preceding Transmission & Reflection calibrations. The frequency
range and data points of the two-port calibration dictate the
calibration configuration for the Four-Port calibration.
Step 1. Perform an OSLT calibration or an AutoCal
calibration (Section 9-3, page 9-4).
Step 2. Specify Test Signal Power Levels:
Power/SOURCE 2 SETUP/SOURCE 2 POWER =
7dB
Cal/PERFORM MANUAL CAL/4 PORT
CAL/CHANGE CAL METHOD/SOLT
NEXT CAL STEP
NEXT CAL STEP
PORT 3 CONN = GPC-3.5 (M)
PORT 4 CONN = GPC-3.5 (M)
START CAL
Step 3. Follow the directions for connecting calibration
devices.
Step 4. Save the setup and cal data:
Save/Recall/SAVE/FRONT PANEL SETUP AND
CAL DATA ON HARD DISK/CREATE NEW
FILE
Step 5. Specify a name using the front panel knob. When
complete, select DONE.
This completes the procedure for calibrating the MS462xD using the
four-port calibration technique.
FOUR PORT MEASUREMENT
CALIBRATION CALIBRATION
7-26 MS462XX OM
NOTE
To verify that the calibration
is good, connect a through
between Ports 1 and 2, 1 and
3 and 1 and 4 in consecutive
order and check that S11,
S22, S33 and S44 have a RL
of 15 or better. Also verify
transmission S-Parameters
are close to 0 dBm.