Safety Symbols - Agilent Technologies U3401A User's And Service Manual

Safety Symbols

Direct current (DC)
Alternating current (AC)
Both direct and alternating current
Three-phase alternating current
Earth (ground) terminal
Protective conductor terminal
Frame or chassis terminal
Equipotentiality
IEC Measurement Category II.
CAT II
Measurement performed on circuits that
300 V
are directly connected to the low voltage
installation (up to 300 VAC) under
Category II overvoltage conditions
U3401A User's and Service Guide
The following symbol on the instrument and in the documentation
indicates precautions that must be taken to maintain safe operation of the
instrument.
Off (supply)
On (supply)
Caution, risk of electric shock
Caution, risk of danger (refer to this
manual for specific Warning or Caution
information)
Caution, hot surface
Out position of a bi-stable push control
In position of a bi-stable push control
Equipment protected throughout by
double insulation or reinforced
insulation
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