User's Manual

Agilent U1251A/U1252A User’s and Service 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.
Category III 1000 V overvoltage protection Category IV 600 V overvoltage protection
Equipment protected throughout by
double insulation or reinforced
insulation
Earth (ground) terminal
Caution, risk of danger (refer to this manual
for specific Warning or Caution information)
Caution, risk of electric shock
CAT IV
600 V
CAT III
1000 V