Center <N; Span <N - Keithley 2500 User Manual

17-68 SCPI Command Reference
CENTer <n>
SPAN <n>
:SOURce[1]:VOLTage:CENTer <n>
:SOURce[1]:VOLTage:SPAN <n>
:SOURce2:VOLTage:CENTer <n>
:SOURce2:VOLTage:SPAN <n>
Parameters
Query
Description
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(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 per-
formed.
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 and measure points in a sweep can be set by specifying a
step size, or by specifying the number of source and measure points in
the sweep. Refer to "STEP <n>," page 17-69,
page 17-70.
: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
<n> = -200 to 200
-100 to 100
DEFault
MINimum
MAXimum
:CENTer?
:CENTer? DEFault
:CENTer? MINimum
:CENTER? MAXimum
:SPAN?
:SPAN? DEFault
:SPAN? MINimum
:SPAN? MAXimum
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.
Models 2500 and 2502 User's Manual
and "POINts <n>,"
Specify center point of source 1 sweep
Specify span of source 1 sweep
Specify center point of source 2 sweep
Specify span of source 2 sweep
Set SPAN source level (volts)
Set CENT source level (volts)
0V
-200V (SPAN), -100V (CENT)
+200V (SPAN), +100 (CENT)
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