Keysight U1270 Series Service Guide 3
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) Caution, risk of electric shock
Alternating current (AC)
Caution, risk of danger (refer to this
manual for specific Warning or Caution
information)
Both direct and alternating current
Category III 1000 V overvoltage
protection
Earth (ground) terminal
Category IV 600 V overvoltage
protection
Equipment protected throughout by
double insulation or reinforced
insulation
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