HP 8508A - Page 26

Operation
3-4 NEW USER INTRODUCTION
3-2
WARNING
Before the Vector Voltmeter is switched on, all protective earth
terminals, extension cords, autotransformers and devices
connected to it should be connected to a protective earth
grounded socket. Any interruption of the protective earth =
grounding will cause a potential shock hazard that could result
in personal injury.
For continued protection against fire hazard, replace the line
fuse with only a 250V fuse of the same rating. Do not use
repaired fuses or short-circuited fuse holders.
CAUTION
Before the Vector Voltmeter is switched on, it must be set to the
same line voltage as the power source or damage to the instrument
may result.
E1089