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17-72 SCPI Command Reference

:STARt <n>

:STOP <n>

:SOURce[1]:CURRent:STARt <n> Specify start current level (current sweep)

:SOURce[1]:VOLTage:STARt <n> Specify start voltage level (voltage sweep)

:SOURce[1]:CURRent:STOP <n> Specify stop current level (current sweep)

:SOURce[1]:VOLTage:STOP <n> Specify stop voltage level (voltage sweep)

Parameters <n> = -105e-3 to 105e-3 Set I-Source level (amps)

-210 to 210 Set V-Source level (volts)

DEFault 0A or 0V

MINimum -105e-3A or -210V

MAXimum +105e-3A or +210V

Query :STARt? Query start level for sweep

:STARt? DEFault Query *RST default level

:STARt? MINimum Query lowest allowable level

:STARt? MAXimum Query highest allowable level

:STOP? Query start level for sweep

:STOP? DEFault Query *RST default level

:STOP? MINimum Query lowest allowable level

:STOP? MAXimum Query highest allowable level

Description These commands are used to specify the start and stop levels for a sweep. If

using a ﬁxed (manual) source range, the sweep will be performed using a

source range that will accommodate all source values (Best Fixed Range).

You can use source auto range if sweeping through one or more source

ranges.

When the sweep is started, the source will output the speciﬁed start level

and, after the delay period of the SDM cycle, a measurement is performed.

The sweep continues until the source outputs the speciﬁed stop level. At this

level, the instrument again performs another measurement (after the SDM

delay) and then stops the sweep.

The source-measure points in a sweep can be set by specifying a step size,

or by specifying the number of source-measure points in the sweep. Refer to

:STEP and :POINts.

:STARt and :STOP are coupled to :CENTer and :SPAN. Thus, when start

and stop values are changed, the values for center and span are affected as

follows:

Center = (Start + Stop) / 2

Span = Stop - Start

Keithley 6430 User Manual

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