Model 2461 Calibration and Adjustment Manual
Section 4: Adjustment
2461-905-01 Rev. A / February 2016
4-3
Resetting the calibration password
If you change the Model 2461 calibration password and forget it, you must return the Model 2461 to
the local Keithley Worldwide Service Center to be reset. There is no user-serviceable procedure to
restore the default calibration password on the Model 2461.
Querying calibration and adjustment dates and count
To query the adjustment date, send the following SCPI command:
CALibration:ADJust:DATE?
To query the number of times the Model 2461 has been adjusted, send the following SCPI command:
CALibration:ADJust:COUNt?
To query the calibration verification date, send the following SCPI command:
CALibration:VERify:DATE?
You can also view the calibration verification and adjustment dates and adjustment count on the front
panel by pressing the
MENU
key and selecting
System Information
.
Adjustment errors
The Model 2461 checks for errors after each adjustment step, minimizing improper adjustment due to
operator error.
Front-panel error reporting
If an error is detected during adjustment, the instrument displays an appropriate error message. Once
the error is displayed, you can dismiss the error message and repeat the adjustment step that caused
the error with the corrected parameter or corrected command syntax.
Remote error reporting
You can detect errors while using a remote interface by testing the state of the Error Available Bit
(EAV) (bit 2) in the status byte (use the
*STB?
query to request the status byte). Query the
instrument for the type of error by using the appropriate
:SYSTem:ERRor?
query. The Model 2461
will respond with the error number and a text message describing the error.
