HP 8753E manual Calibrate Menu, Response Calibration, Response and Isolation Calibration

The Calibrate Menu

There are twelve different error terms for a two-port measurement that can be corrected by accuracy enhancement in the analyzer. These are directivity, source match, load match, isolation, reflection tracking, and transmission tracking, each in both the forward and reverse direction. The analyzer has several different measurement calibration routines to characterize one or more of the systematic error terms and remove their effects from the measured data.

The calibrate menu allows you to perform the measurement calibration routines. These procedures range from a simple frequency response calibration to a full two-port calibration that effectively removes all twelve error terms.

Response Calibration

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The response calibration, activated by pressing the ~~~~#~~ softkey within the calibrate

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menu, provides a normalization of the test setup for reflection or transmission measurements. This calibration procedure may be adequate for measurement of well matched devices. This is the simplest error-correction to perform, and should be used when extreme measurement accuracy is not required.

Response and Isolation Calibration

The response and isolation calibration, activated by pressing the ~~~~~~~~~~~~~~~~	softkey
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within the calibrate menu, provides a normalization for frequency response and crosstalk errors in transmission measurements, or frequency response and directivity errors in reflection measurements This procedure may be adequate for measurement of well matched high-loss devices

S11 and S22 One-Port Calibration

me Sll and Ss2 one-p& cabration procedures, a&iv&& by pressing the ~~~:~~~~~~~

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or ~~~~~~~~~~~~~,.softkey w#,hin the c&b&e menu, provide &e&iv&y, source match, and

frequency response vector error-correction for reflection measurements. These procedures provide high accuracy reflection measurements of one-port devices or properly terminated two-port devices.

Full Two-Port Calibration

me fti two-port calibration, ativated by pressing the ~~~~~~~~~ softkey within the

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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
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of reverSe (or forward) sweeps. m acCeSS this fundon, press @ ;#j#j@ ~~~~~~
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enter the number of sweeps desired.

6-60 Application and Operation Concepts