Keithley SourceMeter 2400, Service Manual, Page: 34 / 137

Model 2400 Service Manual 2-6
Calibration
2400-902-01 (G - Feb 2006)
Changing the password
The default password may be changed from the front panel or via remote as discussed in the
following paragraphs.
Front panel password
Follow the steps below to change the password from the front panel:
1. Press the MENU key, then choose CAL, and press ENTER. The instrument will display
the following:
CALIBRATION
UNLOCK EXECUTE VIEW-DATES
©
ß
SAVE LOCK CHANGE-PASSWORD
2. Select CHANGE-PASSWORD, and then press ENTER. The instrument will display
the following:
NEW PWD: 002400
Use
ß
,
©
,
¹
,
ƒ
, ENTER, or EXIT.
3. Using the range keys, and the left and right arrow keys, enter the new password on the
display.
4. Once the desired password is displayed, press the ENTER key to store the new
password.
Remote password
To change the calibration password via remote, first send the present password, and then send
the new password. For example, the following command sequence changes the password from
the 'KI002400' remote default to 'KI_CAL':
:CAL:PROT:CODE 'KI002400'
:CAL:PROT:CODE 'KI_CAL'
You can use any combination of letters and numbers up to a maximum of eight characters.
NOTE
If you change the first two characters of the password to something other than “KI”,
you will not be able to unlock calibration from the front panel.
Resetting the calibration password
If you lose the calibration password, you can unlock calibration by shorting together the CAL
pads, which are located on the display board. Doing so will also reset the password to the
factory default (KI002400).
See Section 5 for details on disassembling the unit to access the CAL pads. Refer to the
display board component layout drawing at the end of Section 6 for the location of the CAL
pads.