R3765/67G Series Network Analyzer Operation Manual
7.5 Calibration
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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.
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