HP 8921A Programmer's Manual page 4

Safety Considerations
!
WARNING
CAUTION
GENERAL
This product and related documentation must be reviewed for familiarization
with safety markings and instructions before operation.
This product is a Safety Class I instrument (provided with a protective earth
terminal).
SAFETY EARTH GROUND
A uninterruptible safety earth ground must be provided from the main power
source to the product input wiring terminals, power cord, or supplied power
cord set.
CHASSIS GROUND TERMINAL
To prevent a potential shock hazard, always connect the rear-panel chassis
ground terminal to earth ground when operating this instrument from a dc
power source.
SAFETY SYMBOLS
Indicates instrument damage can occur if indicated operating limits are
exceeded.
Indicates hazardous voltages.
Indicates earth (ground) terminal
A WARNING note denotes a hazard. It calls attention to a procedure, practice,
or the like, which, if not correctly performed or adhered to, could result in per-
sonal injury. Do not proceed beyond a WARNING sign until the indicated con-
ditions are fully understood and met.
A CAUTION note denotes a hazard. It calls attention to an operation proce-
dure, practice, or the like, which, if not correctly performed or adhered to,
could result in damage to or destruction of part or all of the product. Do not
proceed beyond an CAUTION note until the indicated conditions are fully un-
derstood and met.
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