U8903A Quick Start Guide III
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)
Equipment protected throughout by double
insulation or reinforced insulation
Alternating current (AC) Off (supply)
On (supply) Caution, risk of electric shock
Earth (ground) terminal
Caution, risk of danger (refer to this manual
for specific Warning or Caution information)
Protective conductor terminal Frame or chassis terminal