Performance Tests and Calibration

7

Calibration Security

N O T E

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 128).

The security code is set to 1234 when the instrument is shipped from the factory. This code is stored in nonvolatile memory, and does not change when power is turned off.

The security code may contain up to 4 numeric characters.

You can unsecure the instrument from the front panel. The security code can only be changed from the front panel after the instrument has been unsecured.

See “To unsecure the instrument without the security code” on page 130 if you forget your security code.

Agilent U1251A/U1252A User’s and Service Guide

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Agilent Technologies U1251A manual Calibration Security