Keithley 2790, Reference Manual

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17-4 Model 2790 SourceMeter
®
Switch System Reference Manual
Calibration code
Before performing comprehensive calibration, you must first unlock calibration by enter-
ing the appropriate calibration code.
Front panel calibration code
For front panel calibration, follow these steps:
1. Access the calibration menu by pressing SHIFT then TEST, then use the up or
down range key to display TEST: CALIB. Press ENTER and note that the instru-
ment displays the following:
CAL: DATES
2. Use the up or down range key to scroll through the available calibration items until
the unit displays RUN, then press ENTER.
3. The Model 2790 then prompts you to enter a code:
CODE? 000000
(The factory default code is 002790.) Use the left and right arrow keys to move
among the digits; use the up range key to increment numbers and press the down
range key to specify alphabetic letters. Confirm the code by pressing ENTER.
4. The Model 2790 allows you to define a new calibration code. Use the up and down
range keys to toggle between yes and no. Choose N if you do not want to change
the code. Choose Y if you want to change the code. The unit then prompts you to
enter a new code. Enter the code and then press ENTER.
Remote calibration code
If you are performing calibration over the IEEE-488 bus or the RS-232 port, send this
command to unlock calibration:
:CAL:PROT:CODE '<8-character string>'.
The default code command is:
:CAL:PROT:CODE 'KI002790'.
To change the code via remote, simply send the :CAL:PROT:CODE command twice. First
with the present code and then with the new code.