User's Manual

Franck-Hertz Experiment Electrical Symbols
3
012-14264A
• Special note: If a dangerous voltage is applied to an input terminal, then the same voltage may occur at all
other terminals.
Electrical Symbols
Installation and Maintenance
Alternating Current
Direct Current
Caution, risk of danger, refer to the operating manual
before use.
Caution, possibility of electric shock
Earth (ground) Terminal
Protective Conductor Terminal
Chassis Ground
Conforms to European Union directives.
WEEE, waste electric and electronic equipment
Fuse
On (Power)
Off (Power)
In position of a bi-stable push control
Out position of a bi-stable push control
WARNING:
To reduce the risk of electric shock or damage to the instrument, turn the power switch off and
disconnect the power cord before replacing a tube.