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9 ENGLISH
SYSTEM INSTALLATION
Installing Front-Mounted Antennas
The UA845 comes equipped for front-mounted antennas.
Front-mounting improves RF performance of the system by moving
the antennas to the front of the rack. When a unit is located in a
rack, antennas should be either front- or remote-mounted.
1. Insert the bulkhead adapters through the holes in each bracket,
and secure them from each side, using the supplied hardware.
2. Connect the supplied antenna cables to the receiver antenna
inputs and adapters.
3. Install the antennas onto the bulkhead adapters protruding
through the front panel. See 5.
NOTE: For the best results, point the antennas up and away
from each other at 45° angles from vertical. This ensures the
best possible reception and greatly reduces the possibility of
signal dropout. Always perform a walk-through test of the
system in the performing area before using a wireless system.
Mounting the UA845 in an Equipment Rack
NOTE: If front mounting the antennas, connect them before
mounting the UA845 in the rack. Once in the rack, it is more
difficult to insert the bulkhead adapters and connect the
antenna cables.
1. Insert the unit into a 19-inch equipment rack.
2. Using the screws supplied, secure the unit to the rack.
3. If the antennas are remote mounted from the back of the rack,
insert the supplied plastic plugs into the holes on the front of the
brackets.
Installing Remote Antennas
Remote-mounted antennas have the advantage of being free
from the unit and closer to the transmitters. They can be placed any-
where within the recommended cable length, creating a much wider
radio reception range and further reducing the possibility of signal
dropout. When remote-mounted antennas are desirable, please
ask your Shure dealer for information on the UA830 In-Line RF Am-
plifier. Cables are available in UA825 (7.5 m [25 ft]) and UA850 (15
m [50 ft]) versions.
INSERTING BULKHEAD ADAPTERS
FIGURE 3
CONNECT ANTENNA CABLES
FIGURE 4
power
UA845
UHF Antenna Distribution System
ATTACH ANTENNAS TO THE ADAPTERS
FIGURE 5
power
UA845
UHF Antenna Distribution System
RACK MOUNTING
FIGURE 6
UA845
UHF Antenna Distribution System
power
UA845
UHF Antenna Distribution System
UA845
UHF Antenna Distribution System
power
power
REMOTE-MOUNTED ANTENNAS
FIGURE 7
RECEIVERS
UA845