Keithley 2461 Reference Manual

Section
6: SCPI command reference Model 2461 Interactive SourceMeter® Instrument
Reference Manual
6-16 2461-901-01 A/November 2015
Example
*SAV 2
Saves the instrument settings in memory location
2.
Also see
Saving setups (on page 2-137)
*RCL (on page 6-15)
ACAL subsystem
Automatic calibration removes measurement errors that are caused by the performance drift on the
components used in the source-measure unit (SMU) digitizer as a result of temperature and time.
If you are using the digitize functions on the Model 2461, it is important to run the automatic
calibration at least once a week.
:ACAL:COUNt?
This command returns the number of times automatic calibration has been run.
Type Affected by Where saved Default value
Query only
Not applicable
Nonvolatile memory
Not applicable
Usage
:ACAL:COUNt?
Details
The number of times that autocalibration has been run since the last factory calibration. The count
restarts at 1 after a factory calibration.
Example
ACAL:COUN?
Returns the number of times auto calibration has
been run.
Example output:
15
Also see
Autocalibration (on page 3-51)
:ACAL:RUN (on page 6-18)

Keithley 2461 Specifications

General

Maximum Current	7 A
Power	100 W
Resolution	6.5 digits
Source Measure Unit (SMU)	Yes
DC Voltage	100 V
Maximum Voltage	100 V
Display	5-inch capacitive touchscreen
Connectivity	USB, GPIB
Software	TSP
DC Current	7 A
Current Source Range	0 to 7 A
Voltage Measurement Range	100 mV to 100 V
Current Measurement Range	10 nA to 7 A
Voltage Measurement Resolution	100 nV