Crown FM30 - Frequency (Channel) Selection

2–5
Installation
OFF
SCA IN
COMPOSITE IN
MONITOR
R
L
23
REMOTE I/O
RIGHT
LEFT/MONO
B
A
T
T
E
R
Y
36 VDC
+
–
CIRCUIT
BREAKER
1
2.2.3 Battery Power
Your transmitter can operate on a DC power source (such as 3 or 4, 12–volt auto-
motive batteries connected in series). The FM30 requires 28 volts DC for full
output power, while the FM100 requires 36 volts, and FM250 requires 62 volts for
full output power. Connect the batteries to the red (+) and black (–) battery input
binding posts on the rear panel.
2.3 Frequency (Channel) Selection
You may select an operating frequency of 87 to 108 MHz in the FM broadcast band.
Pins 9 and 10 of HD2 on the RF Exciter board are jumpered for frequencies
other than these such as the optional Japan frequencies of 76-90 MHz.
To adjust the operating frequency, follow these steps:
1.Remove the top cover by removing 18 screws.
Illustration 2–5 DC Input Terminals
Possible equipment damage!
Never connect a battery charger to the
input terminals of the transmitter
unless a battery is also connected.
Voltage peaks from a typical charger
(without the load of a battery) can be
destructive to the transmitter.
CAUTION
DC Input Terminals