Keithley 6482 - Calibration Menu; Unlocking Calibration; Unlocking Calibration from the Front-Panel; Unlocking Calibration through a Remote Interface

6482-901-01 Rev. A / August 2012 Return to Section Topics 17-15
Model 6482 Dual-Channel Picoammeter / Voltage Source Reference Manual Section 17: Calibration
Calibration menu
Table 17-6 summarizes the main calibration menu selections. To enter the calibration menu, press
the MENU key, select CAL, then press the ENTER key. Use the EDIT keys to move the cursor and
scroll through menu selections. Press the ENTER key to select a menu item.
Unlocking calibration
Before performing calibration, you must first unlock calibration by entering or sending the
calibration password, as explained in the following paragraphs.
Unlocking calibration from the front-panel
1. Press the MENU key, select CAL, and then press the ENTER key. The instrument will display
the following:
CALIBRATION
UNLOCK EXECUTE VIEW-DATES 

SAVE LOCK CHANGE-PASSWORD
2. Select UNLOCK, and then press the ENTER key. The instrument will display the following:
PASSWORD:
Use , , , , ENTER or EXIT.
3. Use the EDIT  and  keys to select the letter or number, and use the EDIT  and  arrow
keys to choose the position. Press 
for letters;  for numbers. Enter the present password on
the display. Front-panel default: 006482.
4. When the correct password is displayed, press the ENTER key. You can then proceed with the
calibration procedure.
Unlocking calibration through a remote interface
To unlock calibration over a remote interface, send the following command:
:CAL:PROT:CODE '<password>'
For example, the following command uses the default password:
:CAL:PROT:CODE 'KI006482'
Table 17-6
Calibration menu
Menu selection Description
UNLOCK Unlock calibration using password (default: 006482).
EXECUTE
V-CAL
CHAN-1
CHAN-2
I-CAL
CHAN-1
CHAN-2
OFFSET
Execute calibration steps.
Voltage bias calibration.
Channel 1 voltage bias calibration.
Channel 2 voltage bias calibration.
Current measurement calibration.
Channel 1 current calibration.
Channel 2 current calibration.
Autozero input offset for both channels.
VIEW-DATES View calibration dates.
SAVE Save calibration constants.
LOCK Lock out calibration.
CHANGE-PASSWORD Change calibration password.