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Safety Symbols
The following symbols on the instrument and in the documentation indicate precautions
which must be taken to maintain safe operation of the instrument.
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
U2722A/U2723A User's Guide
Equipment protected throughout by
double insulation or reinforced
insulation
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
III
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