Chapter 3 Calibration Procedures
Calibration Security Code
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3
Calibration Security Code
This feature allows you to enter a security code (el ectronic key) to preven t
accidental or unauthorized calibr ations of th e power suppl y. When you first
receive your power supply, it is secured. Before you can calibrate the power
supply, you must unsecure it by entering the correct security code. A procedure
to unsecure the power supply is given on the following page.
• The security code is set to ‘‘HP003633’’* or ‘‘HP003634’’** when the power
supply 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 power supply from the remote interface, the se curity 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
num bers. You do not have to use all 12 characters but the first character
must always be a letter.
A _ _ _ _ _ _ _ _ _ _ _ (12 characters)
• To secure the power supply from the remote interface so that it can be
unsecured from the front panel, use the eight-character format shown
below. The first two characte rs must be ‘‘H P’’ 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 power supply
from the front panel, omit the ‘‘HP’’ and enter the remaining numbers as
shown on the follow ing pages .
HP _ _ _ _ _ _ (8 characters)
• If you forget your security code, you can disable the security feature by
adding a jumper insi de the power supply, and then entering a new code.
See the procedure on page 63.
*For Agilent E3633A Model **For Agilent E3634A Model
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