Keysight U1251B Guia Del Usuario página 164

6 Performance Tests and Calibration
To change the instrument calibration security code from the front panel
1 When the multimeter is in the unsecured mode, press
2 The factory default calibration security code 1234 will be displayed on the
3 Use the editing keys
4 Use the
5 Press
6 If the new calibration security code has been successfully stored, the
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, you can try 1234 (the factory
NOTE
default code) using the front panel.
1 Record the last 4 digits of the multimeter's serial number.
2 Turn the rotary switch to
3 Press
4 Press
162
1 second to enter the Calibration Security Code setting mode.
primary display.
and
(Save) to store the new calibration security code.
secondary display will show PASS.
and
Code entry mode.
The primary display shows 5555 and the secondary display shows SECUr.
for more than 1 second to enter the Set Default Security Code
mode. The secondary display shows SEr.no and the primary display shows
5555.
and to step each character in the code.
to change each character in the code.
.
simultaneously to enter the Calibration Security
Keysight U1251B and U1252B User's and Service Guide
for more than