Agilent Technologies 34970A, User Manual, Page: 192 / 356

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Chapter 4 Features and Functions
Calibration Overview
Calibration Overview
This section gives a brief introduction to the calibration features of the
instrument and plug-in modules. For a more detailed discussion of the
calibration procedures, see chapter 4 in the
34970A/34972A Service
Guide .
Calibration Security
This feature allows you to enter a security code to prevent accidental or
unauthorized calibrations of the instrument. When you first receive your
instrument, it is secured. Before you can calibrate the instrument, you
must unsecure it by entering the correct security code.
• The security code is set to either “HP034970” or “AT034972”,
depending on the product number, when the instrument is shipped
from the factory. The security code is stored in
non-volatile memory
on the mainframe, and does not change when power has been off,
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, but the remaining characters can be
letters, numbers, or an underscore ( _ ). You do not have to use all 12
characters but the first character must always be a letter.
If you forget your security code, you can disable the security feature by
adding a jumper inside the instrument. See the 34970A/34972A Service
Guide for more information.
34970A Refresh UG.book Page 192 Wednesday, February 17, 2010 12:34 PM