Keithley 2001 Operator's Manual page 279

Formats
:curr:ac:nplc:auto <b>
:curr:ac:nplc:auto ONCE:curr[:dc]:nplc:auto ONCE
:volt:ac:nplc:auto <b>:volt[:dc]:nplc:auto <b>
:volt:ac:nplc:auto ONCE:volt[:dc]:nplc:auto ONCE
:res:nplc:auto <b>:fres:nplc:auto <b>
:res:nplc:auto ONCE:fres:nplc:auto ONCE
:temp:nplc:auto <b>
:temp:nplc:auto ONCE
Defaults
Power-up
*RST
:SYSTem:PRESet
Query
:AUTO?
Short-form formats:
Response message:
These commands are used to enable or disable auto NPLC for for the specified measurement function.
With auto NPLC enabled, the instrument will automatically select the NPLC value to optimize the mea-
surement.
When auto NPLC is enabled for the TEMP function, the instrument will select an NPLC value of 1. The
NPLC values selected by the instrument for the other measurement functions are summarized in
4-17
The ONCE parameter is analogous to a momentary toggle switch. When :AUTO ONCE is sent, auto
NPLC will turn on momentarily and then disable. While enabled it will automatically select the appro-
priate value as summarized in the tables. When auto NPLC disables, NPLC will remain at the selected
value.
:NPLC:AUTO is coupled to the command that manually sets the NPLC value (:NPLC <n>). When auto
NPLC is enabled, the parameter value for :NPLC <n> changes to the automatically selected NPLC val-
ue. Thus, when auto NPLC is disabled, the NPLC will remain at the automatically selected value.
Auto NPLC is also coupled to auto aperture. Enabling or disabling auto NPLC also enables or disables
auto Aperture. Also, a valid aperture value sent using the :APERture command will disable auto NPLC.
2001-900-01 Rev. K / August 2010
:curr[:dc]:nplc:auto <b>
Saved power-on setup
OFF
OFF
Query state of auto NPLC
:curr:ac:nplc:auto?
:curr[:dc]:nplc:auto?
:volt:ac:nplc:auto?
:volt[:dc]:nplc:auto?
:res:nplc:auto?
:fres:nplc:auto?
:temp:nplc:auto?
0 (off) or 1 (on)
through Table 4-20.
IEEE-488 Reference
Table
4-121