Front Panel Calibration Code; Remote Calibration Code; Comprehensive Calibration - Keithley 2701 Service Manual

Section 2: Calibration

Front panel calibration code

To enter or change the calibration code from the front panel:
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 instrument displays 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. You are prompted to enter a code. 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.
The default code is 002701.
4. Press ENTER to confirm the code.
5. The 2701 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 press
ENTER.

Remote calibration code

If you are performing calibration over the ethernet port 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 'KI002701'
To change the code via remote, send the :CAL:PROT:CODE command twice; first with the present
code and then with the new code.

Comprehensive calibration

The comprehensive calibration procedure calibrates the DCV, DCI, ACV, ACI, and ohms functions.
You can also calibrate only the DCV/DCI and resistance or ACV/ACI functions.
These procedures are usually the only calibration required in the field. Manufacturing calibration is
normally done only at the factory, but it should also be done in the field if the unit has been repaired.
See Manufacturing calibration
2-4
Model 2701 Ethernet-Based DMM / Data Acquisition System Service Manual
(on page 2-18) for more information.
2701-902-01 Rev. B / December 2018