Keithley 2700, Service Manual

Page: 54 / 174

2-6 Calibration
Aborting calibration
You can abort the front panel calibration process at any time by pressing EXIT. The instru-
ment will then ask you to confirm your decision to abort with the following message:
ABORT CAL?
Press EXIT to abort calibration at this point, or press any other key to return to the calibra-
tion process.
NOTE
The Model 2700 will not respond to any remote programming commands while the
ABORT CAL? message is displayed.
Front panel calibration
Follow the steps in the following paragraphs in the order shown for comprehensive, DC
only, and AC only calibration procedures.
The procedures for front panel calibration include:
• Preparing the Model 2700 for calibration
• Front panel short and open calibration
• DC voltage calibration
• Resistance calibration
• DC current calibration
• AC voltage calibration
• AC current calibration
• Setting calibration dates
Preparing the Model 2700 for calibration
1. Turn on the Model 2700, and allow it to warm up for at least two hours before perform-
ing a calibration procedure.
2. Start the calibration process as follows:
a. Access the calibration menu by pressing SHIFT then TEST, then display TEST:
CALIB using the up or down range key. Press ENTER.
b. Use the up or down range key to scroll through the available calibration menu
items until the unit displays RUN, then press ENTER.
c. At the prompt, enter the calibration code. (The default code is 002700.) Use the
left and right arrow keys to move among the digits; use the up range key to incre-
ment numbers, and press the down range key to specify alphabetic letters. Confirm
the code by pressing ENTER.
d. Choose N at the prompt to proceed without changing the code, then press ENTER.