Keithley 2700, Service Manual

Page: 140 / 174

B-4 Calibration Reference
Miscellaneous calibration commands
Miscellaneous commands perform miscellaneous calibration functions such as program-
ming the calibration code and date. These commands are discussed in detail in the following
paragraphs.
:CODE
(:CALibration:PROTected:CODE)
Purpose
To program the calibration code or password so that you can perform the
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. In general, this command
must be sent to the unit before sending any other comprehensive or manu-
facturing calibration command. The default calibration code is KI002700.
NOTES The
:CODE
command should be sent only once before performing either the com-
prehensive or factory calibration. Do not send
:CODE
before each calibration step.
To change the code, first send the present code, then send the new code.
The code parameter must be enclosed in single quotes.
Example
:CAL:PROT:CODE 'KI002700'
Send default code of KI002700.
:COUNt?
(:CALibration:PROTected:COUNt?)
Purpose
To determine how many times the Model 2700 has been calibrated.
Format
:cal:prot:coun?
Response
<n> Calibration count.
Description
The
:COUNt?
command allows you to determine how many times the
Model 2700 has been calibrated.
NOTE Use the
:COUNt?
command to help you monitor for unauthorized calibration
procedures.
Example
:CAL:PROT:COUN?
Request calibration count.