Keithley 2520, Service Manual, Page: 123 / 137

Model 2520 Pulsed Laser Diode Test System Service Manual Calibration Reference B-3
Miscellaneous commands
Miscellaneous commands are those commands that perform such functions as unlocking
calibration, saving calibration constants, locking out calibration, and programming date
parameters.
:CODE
(:CALibration:PROTected:CODE)
Purpose To unlock calibration enabling you to perform the calibration proce-
dures.
Format
:cal:prot:code '<password>'
Parameter
Up to an 8-character string including letters and numbers.
Description
The :CODE command sends the password/code and enables calibration
when performing these procedures via remote. The correct password
must be sent to the unit before sending any other calibration command.
The default remote password is KI002520.
Note •
The :CODE command should be sent only once before performing
calibration. Do not send :CODE before each calibration step.
• To change the code, first send the present code, then send the new
code.
•
The password parameter must be enclosed in single quotes.
• 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.
Example
:CAL:PROT:CODE 'KI002520'
Send default code of KI002520.
:COUNT?
(:CALibration:PROTected:COUNT?)
Purpose To request the number of times the Model 2520 has been calibrated.
Format
:cal:prot:count?
Response
Number of times calibrated.
Description
The :COUNT? query may be used to determine the total number of
times the Model 2520 has been calibrated.
Example
:CAL:PROT:COUNT?
Request calibration count.