R3765/67G Series Network Analyzer Operation Manual
7.5 Calibration
7-58
7.5.12 4-Port Full Calibration
This function calibrates the directivity, source matching, load matching, frequency tracking, and
isolation for a 4-port device.
This calibration method can be used only for the R3765CG and R3767CG equipped with OPT14
(4-port test set).
(1)
The following four calibration standards are necessary:
•
Open standard
•
Short standard
•
Load standard
* Two load standards are necessary for performing isolation calibration.
•
Through standard
(2)
The signal-flow graphs below show error models
•
PORT1 signal source
An error term is indicated with the thick line, and an S parameter (S) is indicated with
the thin line.
A total of 40 error terms can be defined from an error model consisting of the TEST
PORT2, TEST PORT3 and TEST PORT4 signal sources.