Agilent Technologies Option H48 Multiport Test Set Z5623A User's And Service Manual page 111

Figure 6-1 Calibrating the Test System
Calibration Paths
For the best accuracy, you should perform a full two-port calibration
between ports 1 and 3 on the test set, and again between ports 1 and 5.
As mentioned before, you need to save the calibrations as instrument
states. For information on how to calibrate and store instrument states,
refer to the PNA Series Network Analyzers User Guide, part number
E8356-90001.
Do not use the test set to change the RF signal path direction when you
CAUTION
are using a full two-port calibration. Doing so will render the
calibration invalid. Instead, use the internal transfer switch in the
analyzer.
Agilent Technologies Z5623A Option H48
GPIB
Reflection
GPIB
1
(300 kHz - 9.0 GHz)
Port 1
2 3
4 5 6
A
Input
B
Calibration and Test
Measuring Multiport Devices
Calibrating the Test System
E8358A
Port 2
Transmission
8
7
6 -3