6 Keysight E4412A and E4413A Operating and Service Guide
Safety Symbols
The following symbol on the instrument and in the documentation indicates
precautions that must be taken to maintain safe operation of the instrument.
Caution, risk of danger.
The Instruction Documentation
Symbol. The product is marked with
this symbol when it is necessary for the
user to refer to the instructions in the
supplied documentation.
ESD
This symbol indicates that a device, or
part of a device, may be susceptible to
electrostatic discharges (ESD) which
can result in damage to the product.
Observe ESD precautions given on the
product, or its user documentation, when
handling equipment bearing this mark.
Alternating current (AC). Direct current (DC).
Both direct and alternating current. Three-phase alternating current.
Earth (ground) TERMINAL. PROTECTIVE CONDUCTOR TERMINAL.
Frame or chassis TERMINAL. Equipotentiality.
On (Supply). Off (Supply).
Equipment protected throughout by
DOUBLE INSULATION or REINFORCED
INSULATION.
Caution, risk of electric shock.
Caution, hot surface. In position of bi-stable push control.
Out position of bi-stable push control.
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