Secure - Agilent Technologies 3458A Calibration Manual

SECURE

Description
Remarks
Examples
Security Code. Allows the person responsible for adjustment to enter a
security code to prevent accidental or unauthorized adjustment or
autocalibration (autocal).
Syntax
SECURE old_code, new_code [,acal_secure]
This is the multimeter's previous security code. The multimeter is
old_code
shipped from the factory with its security code set to 3458.
new_code
to 2.1E9. If the number specified is not an integer, the multimeter rounds it
to an integer value.
acal_secure
acal_secure
Parameter
OFF
ON
Power-on acal_secure = Previously specified value (OFF is the factory
setting).
Default acal_secure = OFF.
•
Specifying 0 for the new_code disables the security feature making it no
longer necessary to enter the security code to perform an adjustment or
autocal.
•
The front panel's Last Entry key will not display the codes used in a
previously executed SECURE command.
•
In the event that the secure code is lost or unknown by the user. a
procedure is presented in Chapter 1 (section titled "Changing the Security
Code") that allows for unsecuring the instrument after removal of the top
cover.
•
Related Commands: ACAL. CAL. CALNUM?. CALSTR. SCAL
Changing the Code
OUTPUT 722;"SECURE 3458,4448,ON" !CHANGE FACTORY SECURITY
CODE TO 4448, !ENABLE AUTOCAL SECURITY
This is the new security code. The code is an integer from -2.1E-9
Allows you to secure autocalibration. The choices are:
Numeric Query
Equivalent
0
1
Description
Disables autocal security; no
code required for autocal
Enables autocal security; the
security code is required to
perform autocal (see ACAL for
example).
Chapter 5 Command Summary 77