Performance Tests and Calibration 6
Keysight U1253B User’s and Service Guide 185
Resetting the security code to factory default
If you have forgotten the correct security code, you may follow the steps below to
change the security code back to the factory default (1234).
1 Record the last 4 digits of the instrument serial number.
2 Turn the rotary switch to the position.
3 Press and simultaneously to enter the Calibration Security Code
entry mode.
4 The secondary display will indicate “CSC:I 5555” as a cue for you to enter the
security code. However, since you do not have the security code, proceed to
the next step.
5 Without entering the security code, press for more than 1 second to
enter Set Default Security Code mode. The secondary display will indicate
“SCD:I 5555”.
6 Press or to start and choose which digit to edit, and press or to
edit the value. Set these to be the same as the last 4 digits of the instrument
serial number.
7 Press (Save) to confirm the entry.
8 If the number entered is the correct last 4 digits of the serial number, the
upper left corner of the secondary display will momentarily show “PASS”.
Now the security code has been reset to the factory default, 1234. If you wish to
change the security code, refer to the section “Changing Calibration Security
Code” on page 183. Make sure you record the new security code.
Please refer to Figure 6-6 on page 186.
If you do not have a record (or have lost the record) or the security code, first try
the factory default code, 1234, through the front panel. There is always the
possibility that the security code has never been changed at all.
To Next Page
Loading...
