Keysight U2741A User’s 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)
Off (mains supply)
Alternating current (AC)
On (mains supply)
Both direct and alternating current
Caution, risk of electric shock
Three-phase alternating current
Caution, risk of danger (refer to this
manual for specific Warning or Caution
information)
Earth (ground) terminal
Caution, hot surface
Protective earth (ground) terminal
Out position of a bi-stable push control
Frame or chassis (ground) terminal
In position of a bi-stable push control
Equipotentiality
Category II 300 V overvoltage
protection
Equipment protected throughout by
double insulation or reinforced
insulation
CAT II
300 V