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Model 4200A

-SCS Parameter Analyzer Reference Manual Section 13:

LPT library function reference

4200A-901-01 Rev. C / February 2017 13-77

Details

The lorangeX command is used with autoranging to limit the number of range changes, which

saves test time.

If the instrument is on a range lower than the one specified by the lorangeX command, the range is

changed. The 4200A-SCS automatically provides any settling delay for the range change that may be

necessary due to this potential range change.

Once defined, the lorangeX command is in effect until a devclr, devint, execut, or another

lorangeX command executes.

Example

double idatrg[25];

conpin(SMU1, 10, 0);

conpin(SMU2, 11, 0):

conpin(12, GND, 0);

lorangei(SMU1, 2.0E-6); /* Select 2 uA as minimum */

/* range during autoranging. */

smeasi(SMU1, idatvg); /* Set up sweep measurement */

/* of IDS. */

sweepv(SMU2, 0.0, 2.5, 24, 0.002); /* Sweep */

/* gate from 0 V to 2.5 V. */

This example illustrates how you would select the bottom autorange limit.

Also see

devclr (on page 13-67)

devint (on page 13-13)

execut (on page 13-16)

Keithley 4200A-SCS Reference Manual

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