Keithley 6482 - Page 240

6482-901-01 Rev. A / August 2012 Return to Section Topics 16-47
Model 6482 Dual-Channel Picoammeter / Voltage Source Reference Manual Section 16: SCPI Command Reference
To avoid a setting conflicts error, make sure the step size is greater than the start
value and less than the stop value.
The number of source and measure points in a linear sweep can be calculated as
follows:
Points = [(Stop - Start) / Step] + 1
Points = (Span / Step) + 1
An alternate way to set the source and measure points in a linear sweep is to sim-
ply specify the number of source and measure points in the sweep using the
:POINts command.
Note that the :STEP and :POINts commands are coupled. Changing the step size
also changes the number of source and measure points. Conversely, changing
the number of source and measure points changes the step size.
POINts <n>
:SOURce[1]:SWEep:POINts <n>Set number of points for source 1
:SOURce2:SWEep:POINts <n> Set number of points for source 2
Parameters <n> = 1 to 3000 Specify number of source-measure
points
MINimum 1
MAXimum 3000
DEFault 3000
Query :POINts? Query number of sweep points
:POINts? DEFault Query *RST default number of sweep points
:POINts? MINimum Query lowest allowable number of sweep points
:POINts? MAXimum Query highest allowable number of sweep points
Description The :POINts command specifies the total number of source and measure points in
a sweep. For a linear sweep, the source and measure points are equally spaced
(stepped) between the start level and the stop level. For a logarithmic sweep, the
source and measure points are equally spaced on a logarithmic scale. Note that
the start and stop levels are source and measure points.
Step size for a linear sweep can be calculated as follows:
Step Size = (Stop - Start) / (Points - 1)
Step Size = Span / (Points -1)
Step size for a logarithmic sweep can be calculated as follows:
An alternate way to set the source and measure points in a sweep is to specify the
step size using the :STEP command.
Note that the :POINts and :STEP commands are coupled. Changing the number
of source and measure points also changes the step size. Conversely, changing
the step size changes the number of source and measure points.
Log Step Size
log 10 (Stop)- log10 (Start)
Points - 1
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