HP 3562A, Service Manual

Page: 4 / 570

SAFETY SYM B O LS
General Definitions of Safety Symbols U sed On Equipment or I n Manuals.
Instruction manual symbol: the product will be marked with this sym­
bol when it is necessary for the user to refer to the instruction manual
in order to protect against damage to the instrument.
I ndicates dangerous voltage (terminals fed from the interior by vol­
tage exceeding 1 000 volts must be so marked).
Protective conductor terminal. For protection against electrical shock
..L
OR
in case of a fault. Used with field wiring terminals to indicate the
terminal which must be connected to ground before operating
equipment.
rh
OR
.J.
WARNING
CAUTION
N O T
E:
Low-noise or noiseless, clean ground (earth) terminal. Used for a sig­
nal common, as well as providing protection against electrical shock
in case of a fault. A terminal marked with this symbol must be con­
nected to ground in the manner described in the installation (o'perat­
ing) manual, and before operating the equipment.
Frame or chassis terminal. A connection to the frame (chassis) of the
equipment which normally includes all exposed metal structures.
Alternating current (power line).
Direct current (power line).
Alternating or direct current (power line).
The WARNI NG sign denotes a hazard. It calls attention to a proce­
dure, practice, condition or the like, which, if not correctly performed
or adhered to, could result in injury or death to personnel.
The CAUT ION sign denotes a hazard. It calls attention to an operat­
ing procedure, practice, condition or the like, which, if not correctly
performed or adhered to, could result in d amage to or destruction
of part or all of the product.
The NOTE sign denotes important information. It calls attention to
procedure, practice, condition or the like, which is essential to
highlight.