Pulse_Conncomp - Keithley 4200A-SCS Reference Manual

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Model 4200A-SCS Parameter Analyzer Reference Manual

Standard and Segment Arb

Errors caused by the connections and cable length between the 4225-PMU and the device under test

(DUT) can be corrected by using connection compensation. When connection compensation is

enabled, each DUT measurement factors in either the default or measured (custom) compensation

Use this command to control connection compensation. You can select short or delay. Short

compensation corrects for the measured resistance of the cabling and connections. Delay

compensation measures and corrects for cable delay (the time it takes a signal to transit the cable).

You can use either default connection compensation values (PMU or RPM) or custom connection

compensation values. The default values provide compensation for simple connection setups that use

the supplied cables. The custom connection compensated values are generated when connection

compensation is performed. The custom values provide optimum compensation.

Custom connection compensation is a two-part process:

1. Perform connection compensation from the Clarius interface (see

compensation

conditions. The compensation values are stored in tables.

2. Use this command (pulse_conncomp) to enable the custom connection compensation values.

When a test is run, each measurement factors in the enabled compensation values. If connection

compensation is disabled, the compensation values are not used by the test.

pulse_conncomp(PMU1, 1, 1, 3);

This example assumes connection compensation was done using the Clarius interface. This command

enables short connection compensation using the custom compensation values.

4200A-901-01 Rev. C / February 2017

(on page 5-32)). Connection compensation data is generated for short and delay

Section 13: LPT library function reference

Performing connection