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 18
the wraps of tape. Cover the connectors com-
pletely with tape.
5) If the tower box door is opened during the
installation it is important to re-tighten the door-
clamps correctly so that the door gasket seal is
maintained. Insure that the moisture vent holes
at the bottom of the box are unobstructed.
In-building Lightning Arresters
Lightning arresters must be installed in the equip-
ment room one each for the main and test trans-
mission lines, refer to figure 18. The following steps
are required for proper installation.
1) For the test line install a lightning arrester.
Motorola part# DS1090501WA (male/female) or
DS1090501WB (female/female). The chassis of
the arrester should be connected to the master
ground buss with a pigtail.
2) For the main transmission line install a lightning
arrester. Motorola part# DS1090501WA (male/
female) or DS1090501WB (female/female). The
chassis of the arrester should be connected to
the master ground buss with a pigtail.
Installing the Base Control Unit
The base control unit is designed for indoor mount-
ing in a common 19-inch relay rack or cabinet. The
following steps are required for proper installation.
1) Install the base control unit into the rack or cab-
inet with four mounting screws from the hard-
ware kit (part # 3-16509) which is included with
your shipment. Make sure you use a nylon
washer under the head of the screws in order to
protect the front panel. Torque the mounting
screws to no more than 15 in/lbs. Overtighten-
ing the mounting screws may damage the front
panel.
Figure 20: Application of rubber splicing tape. NOTE: Additional waterproofing protection can be realized by
covering the rubber tape with either “Scotch Kote” or Vinyl plastic Electrical tape (“Scotch” brand 33+).
Main
Transmission
Line
Test
Line
Antenna
Feedline
Ground
Lug
1.0
1.0
16.0
2.667 2.667 2.667 .453 thru
8 places
Figure 19: Tower top box mechanical details.