Safety Symbols
The following symbols on the instrument and in the documentation indicate
precautions that must be taken to maintain safe operation of the instrument.
Keysight U1610/20A User's Guide
Direct current (DC)
Alternating current (AC)
Both direct and alternating
current
Caution, risk of danger (refer
to this manual for specific
Warning or Caution
information)
Caution, risk of electric shock
Equipment protected
throughout by double
insulation or reinforced
insulation
Earth (ground) terminal
Category II overvoltage
CAT II
protection
Category III overvoltage
CAT III
protection
3