BIRD 428B-83H-01-C-110, Инструкция по установке и эксплуатации

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TX RX Systems Inc. Manual 7-9487-3 05/05/11 Page 38
output port on the rear of the control deck. It is rec-
ommended that the filter be mounted in the same
rack just above the control unit. The optional filter
will require 2 “rack units” of space.
INSTALLING THE NARROWBAND FILTER IN
MCU STYLE SYSTEMS
Included in the installation kit are:
1) Panel-mounted narrowband preselector with
mounting plates.
2) 24-inch BNC / N cable.
3) 24-inch SMA / N cable.
4) Required installation screws.
Figure 35 shows the cable interconnections that
are required between the filter and the TTA. To
install the optional narrowband filter in your MCU
style TTA system perform the following steps;
Power to the control unit should be turned off dur-
ing installation of the optional filter.
1) On the control unit, disconnect the existing
cable that runs between the output of the distri-
bution amplifier and the input of the 16-way
divider, see figure 35. Use a 5/16” open-end
wrench to loosen the SMA connector on the
amplifier end of the cable. The end of the cable
connected to the 16-way uses a BNC connec-
tor. You may wish to save the cable for future
re-use if you ever decide to remove the optional
filter from your TTA system.
2) With the supplied screws, mount the preselec-
tor panel into the 19-inch rack above the control
unit.
3) Locate a new cable assembly with “SMA” and
“N” male connectors. Connect the “SMA” end of
the cable to the output port of the amplifier
assembly. Connect the “N” end of the cable to
the input connector on the preselector.
4) Locate a new cable assembly with “BNC” and
“N” male connectors. Connect the “BNC” end of
the cable to the RF input connector on the 16-
way divider. Connect the “N” end of the cable to
the output connector on the preselector.
INSTALLING THE NARROWBAND FILTER IN
CMU STYLE SYSTEMS
Power to the control unit should be turned off dur-
ing installation of the optional filter.
1) With the supplied screws, mount the preselec-
tor panel into the 19-inch rack above the control
unit.
Dist
Amp
Opt
Filter
16-Way
RF
OUT
RF IN
From
Tower
Figure 34: Optional filter interconnect diagram for
MCU style systems.
Model # Operating
Range
(MHz)
Band-
width
(MHz)
89-83F-02-03 792 to 806 3
89-83F-02-06 792 to 806 6
89-83F-02-09 792 to 806 9
89-83F-02-14 792 to 806 14
89-86A-02-03 806 to 824 3
89-86A-02-05 806 to 824 5
89-86A-02-10 806 to 824 10
89-86A-02-15 806 to 824 15
89-86A-02-18 806 to 824 18
Table 10 : Optional Narrowband Filters.