HP 750 - Manual (Page 12)

x Contents C4699Ć90000
General Definition of Safety Symbols
International caution symbol (refer to manual): the product is
marked with this symbol when it is necessary for the user to refer
to the instruction manual in order to protect against damage to the
instrument.
Indicates dangerous voltage (terminals fed from the interior by
voltage exceeding 1000 volts must also be marked).
Protective conductor terminal. For protection against electrical
shock in case of a fault. Used with field wiring terminals to
indicate the terminal that must be connected to ground before
operating equipment.
Low-noise or noiseless, clean ground (earth) terminal. Used for a
signal common, as well as providing protection against electrical
shock in case of a fault. A terminal marked with this symbol must
be connected to ground in the manner described in the installation
(operating) 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.
Alternating current
Direct current
Alternating or direct current
The WARNING sign denotes a hazard. It calls attention to a
procedure, practice, or the like, which, if not correctly performed
or adhered to, could result in personal injury.
The CAUTION sign denotes a hazard. It calls attention to an
operating procedure, 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.
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Take care not to cut yourself on the encoder strip inside the plotter.