HP 8568B, Performance Tests And Adjustments Manual, Page: 5 / 313

Safety Symbols
Caution
Warning
The following safety symbols are used throughout this manual.
Familiarize yourself with each of the symbols and its meaning before
operating this instrument.
The
caution
sign denotes a hazard. It calls attention to a procedure
which, if not correctly performed or adhered to, could result in
damage to or destruction of the instrument. Do not proceed beyond a
caution
sign until the indicated conditions are fully understood and
met.
The warning sign denotes a hazard. It calls attention to a
procedure which, if not correctly performed or adhered to, could
result in injury or loss of life. Do not proceed beyond a
warning
sign until the indicated conditions are fully understood and met.
General Safety
Considerations
Warning Before this instrument is switched on, make sure it has been
properly grounded through the protective conductor of the ac
power cable to a socket outlet provided with protective earth
contact.
Any interruption of the protective (grounding) conductor, inside
or outside the instrument, or disconnection of the protective
earth terminal can result in personal injury.
Warning There are many points in the instrument which can, if contacted,
cause personal injury. Be extremely careful.
Any adjustments or service procedures that require operation
of the instrument with protective covers removed should be
performed only by trained service personnel.
Caution Before this instrument
is
switched on,
make sure its primary power
circuitry has been adapted to the voltage of the ac power source.
Failure to set the ac power input to the correct voltage could cause
damage to the instrument when the ac power cable is plugged in.