18-86 SCPI Command Reference 2400 Series SourceMeter
®
User’s Manual
2430 Pulse Mode
<n> = -10.5 to 10.5 Set I-Source level (amps)
-105 to 105 Set V-Source level (volts)
DEFault 0A or 0V
MINimum -10.5A or -105V
MAXimum +10.5A or +105V
2440
<n> = -5.25 to 5.25 Set I-Source level (amps)
-42 to 42 Set V-Source level (volts)
DEFault 0A or 0V
MINimum -5.25A or -42V
MAXimum +5.25A or +42V
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 per-
formed 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 per-
formed.
NOTE For the Model 2430 Pulse Mode, source delay is not used. The delays in a Pulse
Mode sweep are pulse width and pulse delay. See Section 5 and Section 10 for
details.
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 <n>,” page 18-88, and “POINts <n>,”
page 18-90.)
: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
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