Safety Symbols - Keysight U1211A User's And Service Manual

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.
Direct current (DC)
Alternating current (AC)
Earth (ground) terminal
Category III 1000 V overvoltage
CAT III
1000 V
protection
Category IV 600 V overvoltage
CAT IV
600 V
protection
Keysight U1211A, U1212A, and U1213A User's and Service Guide
Caution, risk of electric shock
Caution, risk of danger (refer to this
manual for specific Warning or Caution
information)
Equipment protected throughout by
double insulation or reinforced
insulation
Application around and removal from
HAZARDOUS LIVE conductors is
permitted
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