Keithley 6430 Instruction Manual page 383

:CENTer <n>
:SPAN <n>
:SOURce[1]:CURRent:CENTer <n>
:SOURce[1]:VOLTage:CENTer <n>
:SOURce[1]:CURRent:SPAN <n>
:SOURce[1]:VOLTage:SPAN <n>
Parameters
<n> =
Query
:CENTer?
:CENTer? DEFault
:CENTer? MINimum
:CENTER? MAXimum
:SPAN?
:SPAN? DEFault
:SPAN? MINimum
:SPAN? MAXimum
Description
A sweep can be configured by specifying center and span parameters. By
specifying a center point, you can sweep through the operating point of a
device. The span determines the sweep width with the operating point at the
center of the sweep.
For example, assume you are testing a device that operates at 10V, and you
want to sweep from 8 to 12 volts. To do this, you would specify the center to
be 10V and the span to be 4 volts (12 - 8).
Use the :STEP or :POINts command to specify the number of source-
measure points in the sweep.
:CENTer and :SPAN are coupled to STARt and :STOP. Thus, when center
and span values are changed, the values for start and stop are affected as
follows:
Start = Center - (Span / 2)
Stop = Center + (Span / 2)
Specify center point of current sweep
Specify center point of voltage sweep
Specify span of the current sweep
Specify span of the voltage sweep
-210e-3 to 210e-3 Set I-Source level (amps)
-420 to 420 Set V-Source level (volts)
DEFault 0A or 0V
MINimum -210e-3A or -420V
MAXimum +210e-3A or +420V
Query center point for sweep
Query *RST default level
Query lowest allowable level
Query highest allowable level
Query span for sweep
Query *RST default level
Query lowest allowable level
Query highest allowable level
SCPI Command Reference 17-73