Keithley 6482 Reference Manual page 239

Section 16: SCPI Command Reference
CENTer <n>
SPAN <n>
Parameters
Query
Description
STEP <n>
Parameters
Query
Description
NOTE
16-46
:SOURce[1]:VOLTage:CENTer <n>Specify center point of source 1 sweep
:SOURce[1]:VOLTage:SPAN <n>Specify span of source 1 sweep
:SOURce2:VOLTage:CENTer <n>Specify center point of source 2 sweep
:SOURce2:VOLTage:SPAN <n> Specify span of source 2 sweep
<n> = -30 to 30
-30 to 30
DEFault
MINimum
MAXimum
:CENTer?
:CENTer? DEFault
:CENTer? MINimum
:CENTER? MAXimum Query highest allowable level
: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.
For example, assume you are testing a device that operates at 10 V, and you want
to sweep from 8 to 12 volts. To do this, you would specify the center to be 10 V
and the span to be 4 volts (12 - 8).
Use the :STEP or :POINts command to specify the number of source and mea-
sure 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)
:SOURce[1]:VOLTage:STEP <n>Specify step size (source 1 sweep)
:SOURce2:VOLTage:STEP <n> Specify step size (source 2 sweep)
<n> = -30 to 30
DEFault
MINimum
MAXimum
:STEP
:STEP? DEFault
:STEP? MINimum
:STEP? MAXimum
These commands are used to specify a step size for a linear sweep. When the
sweep is started, the source level changes in equal steps from the start level to
the stop level. A measurement is performed at each source step (including the
start and stop levels).
This command cannot be used for a logarithmic sweep. Use the :POINts command to set
the source and measure points for a logarithmic sweep.
Return to
Model 6482 Dual-Channel Picoammeter / Voltage Source Reference Manual
Set SPAN source level (volts)
Set CENT source level (volts)
0 V
-30 V (SPAN), -30 V (CENT)
+30 V (SPAN), +30 (CENT)
Query center point for sweep
Query *RST default level
Query lowest allowable level
Query span for sweep
Query *RST default level
Query lowest allowable level
Query highest allowable level
Set source level (volts)
0 V
-30 V
+30 V
Query step size for sweep
Query *RST default level
Query lowest allowable level
Query highest allowable level
Section Topics 6482-901-01 Rev. A / August 2012