Keithley 6512 Instruction Manual page 150

Example Programs
D.9 Calibration program
Program 5 below can be used as an aid in calibrating the
Model 6512 using the equipment covered in Section 7 of this
manual. Follow the steps below to use this program:
1. With the power off, connect the Models 263 and 6512 to
the GPIB interface of the computer.
2. With the power off, connect the Model 263 to the Model
6512, as shown in Figure 7-3 (Section 7). Also connect
the external voltage calibrator to the Model 263, as
shown in Figure 7-4.
3. Turn on the Models 6512 and 263, and the external volt-
age calibrator, and allow a two-hour warm-up period be-
fore beginning calibration.
4. Set the IEEE-488 primary address of the Model 263 to
8, and set the primary address of the Model 6512 to 27.
D-6
5. Enter the calibration program into the computer. (See
the introduction of this appendix for complete details.)
6. To calibrate the instrument, run the program, and follow
the instructions on the CRT display.
7. After all functions are calibrated, the program will
prompt for permanent storage of calibration constants in
NVRAM. This feature allows you to stop at this point in
order to avoid permanent calibration. Unless calibration
is made permanent, the calibration constants will be lost
when the instrument is turned off.
8. If selected, storage of calibration constants into
NVRAM is performed as indicated by the "Stor" mes-
sage on the Model 6512. If instead the message "out" is
displayed, the calibration jumper is in the disable posi-
tion, and calibration constants will be lost when the
Model 6512 is turned off. (See paragraph 7.4.3 for infor-
mation on the calibration jumper.)