User`s guide

7-55

Operating Concepts

Calibration Routines

Full Two-Port Calibration (ES Models Only)

The full two-port calibration, activated by pressing the softkey within the

calibrate menu, provides directivity, source match, load match, isolation, and frequency

response vector error-correction, in both forward and reverse directions, for transmission

and reﬂection measurements of two-port devices. This calibration provides the best

magnitude and phase measurement accuracy for both transmission and reﬂection

measurements of two-port devices, and requires an S-parameter test set.

In this type of calibration, both forward and reverse measurements must be made. You

have the option of setting the ratio of the number of forward (or reverse) sweeps versus the

number of reverse (or forward) sweeps. To access this function, press

and enter the number of sweeps desired.

TRL*/LRM* Two-Port Calibration

The TRL*/LRM* two-port calibration, activated by pressing the

softkey within the calibration menu, provides the ability to make calibrations using the

TRL or LRM method. True TRL/LRM calibration is available on analyzers equipped with

Option 400, the Four Sampler Test Set. For more information, refer to “TRL*/LRM*

Calibration (ES Models Only)” on page 7-66.

FULL 2-PORT

Cal

TESTSET SW

TRL*/LRM* 2-PORT