Agilent Technologies U1251A User's And Service Manual page 141

N O TE
Agilent U1251A/U1252A User's and Service Guide
To Unsecure the Instrument Without the Security Code
To unsecure the instrument without the correct security
code, follow the steps below.
If you do not have a record of the security code, first try 1234 (the factory
default code) through front panel or remote interface.
1 Record the last 4 digit serial numbers of the instrument.
2. Turn the rotary switch to
3. Press and
the Calibration Security Code entry mode.
4. The primary display shows 5555 and the secondary dis-
play shows SECUr.
5. Press button for more than 1 second to enter Set
Default Security Code mode. The secondary display shows
SEr.no and primary display shows 5555.
6. Use the editing keys
acter in the code.
Use the and
7. Set the code, same as last 4 digit serial number of the
instrument.
8. Press (Save) button, to confirm the entry.
9. If the correct 4 digit serial number was entered, the
secondary display briefly show PASS.
Performance Tests and Calibration
.
button simultaneously to enter
and to step each char-
to select each character.
7
141