Keithley 2001 User Manual

IEEE-488 Reference
4-120
:AUTO <b>|ONCE
[:SENSe[1]]:CURRent:AC:APERture:AUTO <b>|ONCE Control auto aperture for ACI
[:SENSe[1]]:CURRent[:DC]:APERture:AUTO <b>|ONCE Control auto aperture for DCI
[:SENSe[1]]:VOLTage:AC:APERture:AUTO <b>|ONCE Control auto aperture for ACV
[:SENSe[1]]:VOLTage[:DC]:APERture:AUTO <b>|ONCE Control auto aperture for DCV
[:SENSe[1]]:RESistance:APERture:AUTO <b>|ONCE Control auto aperture for Ω 2
[:SENSe[1]]:FRESistance:APERture:AUTO <b>|ONCE Control auto aperture for Ω 4
[:SENSe[1]]:TEMPerature:APERture:AUTO <b>|ONCE Control auto aperture for TEMP
Parameters
<b> = 1 or ON Enable auto aperture
= 0 or OFF Disable auto aperture
ONCE Enable and then disable auto aperture
Formats
:curr:ac:aper:auto <b> :curr[:dc]:aper:auto <b>
:curr:ac:aper:auto ONCE :curr[:dc]:aper:auto ONCE
:volt:ac:aper:auto <b> :volt[:dc]:aper:auto <b>
:volt:ac:aper:auto ONCE :volt[:dc]:aper:auto ONCE
:res:aper:auto <b> :fres:aper:auto <b>
:res:aper:auto ONCE :fres:aper:auto ONCE
:temp:aper:auto <b>
:temp:aper:auto ONCE
Defaults
Power-up Saved power-on setup
*RST OFF
:SYSTem:PRESet OFF
Query
:AUTO? Query state of auto aperture.
Short-form formats: :curr:ac:aper:auto?
:curr:dc:aper:auto?
:volt:ac:aper:auto?
:volt:dc:aper:auto?
:res:aper:auto?
:fres:aper:auto?
:temp:aper:auto?
Response message: 0 (off) or 1 (on)
Description
These commands are used to enable or disable auto aperture for for the specified measurement
function. With auto aperture enabled, the instrument will automatically select the aperture value
to optimize the measurement.
When auto aperture is enabled for the TEMP function, the instrument will select an aperture val-
ue of 16.67msec for the 60Hz power line (20msec for the 50Hz or 400Hz power line). The ap-
erture values selected by the instrument for the other measurement functions are summarized in
Tables 4-13 through 4-16.
The ONCE parameter is analogous to a momentary toggle switch. When :AUTO ONCE is sent,
auto aperture will turn on momentarily and then disable. While enabled it will automatically se-
lect the appropriate value as summarized in the tables. When auto aperture disables, the aperture
will remain at the selected value.

Keithley 2001 Specifications

General

Brand	Keithley
Model	2001
Category	Multimeter
Language	English