Resetting The Calibration Code; Viewing Calibration Date And Count; Viewing Date And Count From The Front Panel; Acquiring Date And Count By Remote - Keithley 2303 Service Manual

2-22 Calibration

Resetting the calibration code

If you lose the calibration code, you can unlock calibration by temporarily shorting together
the CAL pads, which are located on the digital board, while turning on the power. Since the dig-
ital board is located under the analog board, it may be necessary to use extender wires or to
remove the analog board to gain access.

Viewing calibration date and count

Viewing date and count from the front panel

Follow the steps below to view the Model 2303 or 2303-PJ calibration date and count from
the front panel:
1.
2.
3.

Acquiring date and count by remote

Use the :DATE? and :COUNT? queries to determine the Model 2303, 2303B, or 2303-PJ cal-
ibration date and count respectively. See Miscellaneous commands in Appendix B for more
details.
Press the MENU key, then choose CALIBRATE UNIT, and press ENTER. The instru-
ment will display the last date calibrated:
CALIBRATE UNIT
LAST ON 02/01/97
Press the up arrow key. The instrument will display the number of times it was calibrated:
CALIBRATE UNIT
TIMES= 01
Press MENU to return to the menu structure.