Calibration Overview
This section gives a brief introduction to the calibration features of the
multimeter. For a more detailed discussion of the calibration procedures,
see chapter 4 in the Service Guide.
Calibration Security
This feature allows you to enter a security code to prevent accidental or
unauthorized calibrations of the multimeter. When you first receive
your multimeter, it is secured. Before you can calibrate the multimeter,
you must unsecure it by entering the correct security code.
• The security code is set to “HP034401” when the multimeter is shipped
from the factory. The security code is stored in non-volatile memory,
and does not change when power has been off or after a remote
interface reset.
• To secure the multimeter from the remote interface, the security code
may contain up to 12 alphanumeric characters as shown below.
The first character must be a letter, but the remaining characters can
be letters or numbers. You do not have to use all 12 characters but
the first character must always be a letter.
A _ _ _ _ _ _ _ _ _ _ _ (12 characters)
• To secure the multimeter from the remote interface so that it can be
unsecured from the front panel, use the eight-character format shown
below. The first two characters must be “HP” and the remaining
characters must be numbers. Only the last six characters are
recognized from the front panel, but all eight characters are required.
(To unsecure the multimeter from the front panel, omit the “HP” and
enter the remaining numbers as shown on the following pages.)
H P _ _ _ _ _ _ (8 characters)
If you forget your security code, you can disable the security feature by
adding a jumper inside the multimeter, and then entering a new code.
See the Service Guide for more information.
3
Chapter 3 Features and Functions
Calibration Overview
95
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