Broadcast Electronics FX-50, Instruction Manual

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©2011 Broadcast Electronics
If an alternate ac line voltage is required, remove the AC LINE VOLTAGE SELECTOR circuit board with a small
pair of needle nose pliers. Re-insert the circuit board so that the correct ac line voltage is visible when the circuit
board is inserted into the receptacle.
Ensure the line fuse and spare fuse are both slow-blow types and rated at 3.0 amperes for the 100 to 120 volt
range or 1.5 ampere for the 220 to 240 volt range.
PLACEMENT. The FX-50/E exciters may be installed in any convenient location in a 19 inch (48.3 cm) rack
within reach of signal and power cables. The exciter should not be installed directly above or below heat
generating equipment, otherwise no special requirements need be observed.
SLIDE-RAIL INSTALLATION AND TRANSMITTER MOUNTING. The FX-50/E is designed to be mounted in a rack
using slide rails. To install the slide rails, proceed as follows:
A. Locate the slide rail mounting brackets and the movable portion of each slide rail in the accessory kit.
B. Refer to Figure 14-2, SECTION VII, DRAWINGS and secure the slide rail mounting brackets to the respective
side of the rack cabinet with the hardware supplied.
C. Secure the movable portion of the slide rail to the mounting brackets with the hardware supplied.
D. After the slide rails are mounted, lift the exciter onto the rails over the slide stops and push the exciter into
the rack.
OPERATING FUNCTION PROGRAMMING. The FX-50/E exciters are equipped with several programmable
operating functions. Refer to the following text and program the operating functions as desired.
Pull the exciter forward until the slide rail stops are encountered.
Loosen the eight turn-lock fasteners on the top of the exciter and remove the top cover.
Remove any packing material from the inside of the exciter.
Refer to Figure 2-2 and ensure AUTO-PWR-MAN switch S1 and NORM-EXT switch S2 on the power
supply/control circuit board assembly are operated to AUTO and to NORM respectively.
POS-MUTE-NEG switch S3 on the power supply/control circuit board is provided to select the RF mute input
logic polarity (refer to Figure 2-2). S3 must be in the POS position when the FX-50/E is operated with a
Broadcast Electronics transmitter or as a stand-alone unit. Switch S3 is factory operated to the POS position
prior to shipping.
Refer to the final test data sheets shipped with the exciter and ensure the 3 SYNTHESIZER FREQUENCY
SELECTION switches on the AFC/PLL assembly are correctly positioned.
Refer to Figure 2-2 and remove the two shipping screws which secure the modulated oscillator assembly to
operate the shock mounts.
Replace the top cover on the exciter and secure the eight turn-lock fasteners on the top of the cover.
CAUTION
CAUTION
ENSURE THE SLIDE RAILS ARE PARALLEL TO EACH
OTHER AND LEVEL BEFORE DRILLING ANY HOLES
TO MOUNT THE REAR OF THE SLIDE RAILS.