Keithley 2700, Service Manual

Page: 153 / 174

Calibration Reference B-17
:CODE
(:CALibration:PROTected:CODE)
Purpose
To program the calibration code or password so that you can perform the
Model 7700 calibration procedures.
Format
:cal:prot:code '<char_string>'
Parameter
Up to a 8-character string including letters and numbers.
Description
The
:CODE
command enables the Model 2700 calibration procedures
when performing these procedures over the bus. This command must be
sent to the unit before sending any other Model 7700 calibration command.
The default calibration code is KI002700.
NOTES The
:CODE
command should be sent only once before performing calibration. Do
not send
:CODE
before each calibration step.
The code parameter must be enclosed in single quotes.
Example
:CAL:PROT:CODE 'KI002700'
Send default code of KI002700.
:COUNt?
(:CALibration:PROTected:CARD1:COUNt?)
(:CALibration:PROTected:CARD2:COUNt?)
Purpose
To determine how many times a Model 7700 has been calibrated.
Format
:cal:prot:card1:coun?
:cal:prot:card2:coun?
Response
<n> Calibration count.
Description
The
:CARD1:COUNt?
and
:CARD2:COUNt?
commands allow you to
determine how many times a Model 7700 in Slot 1 and Slot 2 respectively
has been calibrated.
NOTE Use the
:COUNt?
command to help you monitor for unauthorized calibration
procedures.
Example
:CAL:PROT:CARD1:COUN?
Request card 1 calibration count.