Keithley 2001 User Manual

IEEE-488 Reference
4-121
:APERture:AUTO is coupled to the command that manually sets the aperture value (:APERture
<n>). When auto aperture is enabled, the parameter value for :APERture <n> changes to the
automatically selected aperture value. Thus, when auto aperture is disabled, the aperture will re-
main at the automatically selected value.
Auto aperture is also coupled to auto NPLC. Enabling or disabling auto aperture also enables or
disables auto NPLC. Also, a valid NPLC value sent using the :NPLC command will disable auto
aperture.
Table 4-13
Auto aperture; ACI
Resolution
Aperture value
(Auto aperture enabled)
6 ½ digits*
5 ½ digits*
4 ½ digits*
Auto resolution enabled
166.67msec (60Hz power line cycle)
200msec (50Hz and 400Hz)
333.33µsec (60Hz)
400µsec (50Hz and 400Hz)
166.67µsec (60Hz)
200µsec (50Hz and 400Hz)
* Auto resolution disabled.
Table 4-14
Auto aperture; DCI
Measurement
type Resolution
Aperture value
(Auto aperture enabled)
Normal
Normal
Normal
Normal
Normal
In-circuit
7 ½ digits*
6 ½ digits*
5 ½ digits*
4 ½ digits*
Auto resolution enabled
5 ½ digits*
33.33msec (60Hz power line)
40msec (50Hz and 400Hz)
3.33msec (60Hz)
4msec (50Hz and 400Hz)
333.33µsec (60Hz)
400µsec (50Hz and 400Hz)
166.67µsec (60Hz)
200µsec (50Hz and 400Hz)
16.67msec (60Hz)
20msec (50Hz and 400Hz)
Any
* Auto resolution disabled.

Keithley 2001 Specifications

General

Brand	Keithley
Model	2001
Category	Multimeter
Language	English