Calibration Security; Unsecuring The Instrument For Calibration - Keysight U1211A User's And Service Manual

Calibration Security

A calibration security code is in place to prevent 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
page 97).
The security code is set as 1234 when the instrument is shipped from the factory.
The security code is stored in non-volatile memory, which does not change even
when the power is off.
You can unsecure the instrument and then change the security code from the
NOTE
front panel or through the remote interface.
The security code may contain up to 4 numeric characters.
See
NOTE
security code.

Unsecuring the instrument for calibration

Before you can adjust the instrument, you must unsecure it by entering the
correct security code. The security code is set to 1234 when the instrument is
shipped from the factory. The security code is stored in non-volatile memory, and
does not change when the power is turned off.
See
NOTE
subsequent procedures below.
Keysight U1211A, U1212A, and U1213A User's and Service Guide
"Resetting the security code to factory default"
Table 4-1 on page 64 for the directional button operations to be used in the
Performance Tests and Calibration
"Unsecuring the instrument for calibration"
on page 99 if you forget your
6
on
97