Calibration Security - Keysight U1242C Service Manual

1 Calibration Procedures

Calibration Security

The calibration security code prevents accidental or unauthorized adjustments to
the multimeter. When you first receive your multimeter, it is secured.
Before you can adjust the multimeter, you must unsecure it by entering the
correct security code. See
page 35.
The security code can only be changed after the multimeter has been
NOTE
unsecured. You can unsecure the multimeter from its front panel.
The security code is set to
The security code is stored in nonvolatile memory, and does not change when
power has been turned off or after a remote interface reset. The security code may
contain up to four numeric characters.
34
"Unsecuring the Multimeter for Calibration"
when the multimeter is shipped from the factory.
Keysight U1241C/U1242C Service Guide
on