Keysight Technologies 34450A 5.5 Digit Guide Rapide page 11

Connecting the Power Cord and Powering On the Multimeter
The line voltage switch and fuse are set at factory default settings for the
NOTE
destination country
Locking and Unlocking the Front Panel Keys
Keysight 34450A Quick Start Guide
1
3
1
Press these keys simultaneously
for >3 seconds
2
4
2
11