Keithley SourceMeter 3A 2420 Service Manual page 115

Miscellaneous commands
Miscellaneous commands are those commands that perform such functions as saving calibra-
tion constants, locking out calibration, and programming date parameters.
:CODE
(:CALibration:PROTected:CODE)
Purpose
Format
Parameter
Description
Note
Example
:COUNT?
(:CALibration:PROTected:COUNT?)
Purpose
Format
Response
Description
Example
:LOCK
(:CALibration:PROTected:LOCK)
Purpose
Format
Query
Response
To unlock calibration so that you can perform the calibration procedures.
:cal:prot:code '<password>'
Up to a 8-character string including letters and numbers.
The :CODE command sends the password and enables calibration when per-
forming these procedures via remote. The correct password must be sent to
the unit before sending any other calibration command. The default remote
password is KI002420.
• 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.
:CAL:PROT:CODE 'KI002420'
To request the number of times the Model 2420 has been calibrated.
:cal:prot:count?
Number of times calibrated.
The :COUNT? query may be used to determine the total number of times the
Model 2420 has been calibrated.
:CAL:PROT:COUNT?
To lock out calibration.
:cal:prot:lock
:cal:prot:lock?
0 Calibration unlocked
1 Calibration locked
Command Reference
Send default code of KI002420.
Request calibration count.
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