Crown FM250G, Руководство пользователя

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Rev A
FM250G User’s Manual
2—2
2.1 Operating Location
You can install the FM transmitter in a standard component rack or on a suitable
surface such as a bench or desk. In any case, the area should be as clean and well-
ventilated as possible. Always allow for at least 2 cm of clearance under the unit for
ventilation. If you set the transmitter on a flat surface, install spacers on the bottom
cover plate. If you install the transmitter in a rack, provide adequate clearance above
and below. Do not locate the transmitter directly above a hot piece of equipment.
2.2 Power Connections
The FM250G operates on 120 or 240 volts AC (50 or 60 Hz; single phase). As
shipped (factory default settings), the FM250G operates on 240 volts at 60 Hz.
If you are operating the transmitter at 240 volts you do not need to make any
changes. To operate the FM250G at 120 volts, make the following changes.
To change the voltage setting, perform the following steps:
1. Disconnect the power cord if it is attached.
2. Open the cover of the power connector assembly using a small, flat blade
screwdriver. See Illustration 2–1, Opening the Power Connector Cover.
3. Insert the screwdriver into the top slot of the voltage selection assembly (red)
and pry out the assembly from the power connector.
4. If you are setting the input voltage for 120 volts, replace the installed fuses
with 10 amp fuses (included in your package). See Illustration 2–2, Removing
the Voltage Selection (red) Assembly.
5. Replace the red fuse assembly so that the "120V" setting appears right side up
in the window. Close the assembly window.
CAUTION
Possible equipment damage!
Before operating the transmitter for the first
time, check for the proper AC line voltage set-
ting and frequency described in Section 2.2,
Power Connections and Section 2.3, Frequency
(Channel) Selection.