Technical data

Performance Tests and Calibration 1
Calibration Security
34450A Service Guide 23
Calibration Security
The calibration security code prevents accidental or unauthorized
adjustments to the instrument. When you first receive your instrument, it
is secured. Before you can adjust the instrument, you must unsecure it
by entering the correct security code (see “Unsecuring the instrument for
calibration” on page 24).
The security code is set to AT34450 when the instrument is shipped
from the factory. The security code is stored in non- volatile memory,
and does not change when power is turned off or after a Factory Reset
(*RST command) or after an Instrument Preset (SYSTem:PRESet
command).
The security code may contain up to 12 alphanumeric characters. The
first character must be a letter. The remaining characters can be letters
or numbers. You do not have to use all 12 characters.
NOTE
You can unsecure the instrument from the front panel, but you are not allowed to enter a
new security code or change the security code from the front panel. The security code can
only be changed from the remote interface after the instrument has been unsecured. Refer
to the CAL:SEC:CODE command in the 34450A Programmer's Reference Help File for
more details.