Keithley 2182, User Manual, Page: 72 / 339

3-4 Range, Digits, Rate, and Filter
Autoranging
To enable autoranging, press the AUTO key. The AUTO annunciator turns on when
autoranging is selected. While autoranging is enabled, the instrument automatically selects the
best range to measure the applied signal. Autoranging should not be used when optimum speed
is required. Note that the AUTO key has no effect on temperature (TEMP1 and TEMP2).
Up-ranging occurs at 120% of range, while down-ranging occurs at 10% of nominal range.
To disable autoranging, press AUTO the RANGE or key. Pressing AUTO to disable
autoranging leaves the instrument on the present range.
SCPI programming - range
Programming example
The following program fragment enables autoranging for DCV1 and sets DCV2 to the 1V
range:
CALL SEND(7,“:sens:volt:rang:auto on”,status%) ‘Enable autorange for DCV1.
CALL SEND(7,“:sens:volt:chan2:rang 0.5”,status%) ‘Set DCV2 to 1V range.
Table 3-1
SPCI commands - range
Commands Description Default
:SENSe: SENSe Subsystem:
:VOLTage Volts function:
[:CHANnel1] Channel 1 (DCV1):
:RANGe Range selection:
[:UPPer] <n> Specify expected reading: 0 to 120 (volts). 120
: AUTO <b> Enable or disable auto range.
:CHANnel2 Channel 2 (DCV2):
:RANGe Range selection:
[:UPPer] <n> Specify expected reading: 0 to 12 (volts). 12
: AUTO <b> Enable or disable auto range.