General Information 2
Keysight U8001A/U8002A User’s and Service Guide 23
Rear Panel at a Glance
Panels Functions
1 AC inlet Connects AC power line.
2 Power fuse-holder assembly Sets the line voltage to the proper values for different country based. 
3 Power-line module Combination of the AC inlet and power fuse-holder assembly.
4 Physical lock mechanism Enables physical lock mechanism.
5 Line Voltage Fuse Rating indicator Indicates the line voltage and line fuse rating.