
3.9 Using The Power Supply
What the
power supply
does
The FXT cabinet has its own power supply. The power supply provides operating power for the
circuit boards and the telephone stations. The power supply is hinged to the right side of the
cabinet and secured with machine screws.
Power supply
requirements
For the AC power connection, employ a dedicated switchable 115VAC 15 AMP circuit, with a
third-wire ground, supplied to a standard electrical outlet (NEMA 5-15R) that is protected by its
own circuit breaker. Remember, this electrical outlet must be located within four feet of the
equipment cabinet.
To provide protection against surges and spikes that may appear on the AC line, install a plug-in
power line surge protector between the AC power cord of the installed equipment and the AC
outlet.
The equipment cabinet employs a fan-cooled electronic switching power supply (ensure that the
fan can always provide unobstructed air flow for cooling). During operation, power supplies of
this type generate an audible sound from their switching regulators. This sound is normal and is
not an indication that the power supply is operating improperly.
CAUTION
DO NOT attach or secure the AC line cord to the surface of the mounting location in any manner.
3 – 10 General Description
GCA40–215 General Description
Comentarios a estos manuales