M/A-Com P5100 Series, Руководство по установке

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MM102225V1, Rev. B
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Adapters for each antenna system are selected when ordering the system. If the coaxial
cable must be attached to a structure that is not compatible with any of the above hangers
or adapters, then additional materials or other special considerations may be required.
To secure 1/4-inch or 1/2-inch vertical or horizontal coaxial cables of any size, use UV
resistant, black nylon cable ties.
2.2.2.5 Weatherproofing
A kit of weatherproof tape is provided to protect coaxial connectors from the outside
elements. One roll of tape is sufficient to weatherproof four exposed outside connector
joints (More than four are required with a Top Tower Antenna).
2.2.2.6 Antenna Grounding
Grounding kits are installed to prevent the radio system from being damaged by
lightning. A grounding point should be installed at the top end of each coaxial cable run
on the tower. A second grounding point should be installed on each cable at the bottom of
the tower and a third grounding point on the cable at the point where the cable enters the
building, if the tower-to-building length is greater than 20 feet. For cable runs on the
tower greater than 200 feet, additional grounding points should be installed at each 200-
foot interval. Grounding points should be installed at the Tower Top Amplifier as well.
2.3 TOWER TOP AMPLIFIER
The T ower T op A mplifier ( TTA ) should be installed near the receive antenna in order to
improve the receive (inbound) channel performance. The amplifier should be mounted to
the tower structure with corrosion resistant hardware and grounded to the tower structure
with a #6 AWG solid or stranded copper conductor. All TTA ground connections,
whether to tower frame (angular or circular) or a tower ground buss, should be made with
corrosion resistant hardware.
For the TTA a "drip loop" in the RF cable from the antenna is recommended.
2.4 SITE REQUIREMENTS
This section provides information for preparing the facility prior to installing the
equipment. This information includes proposed equipment layout, environment, electrical
power and telephone line installation.
2.4.1
Floor Plan
Direct access to the area (for antenna cables and personnel) between the tower and the
equipment room is necessary. Standard floor plans for the equipment cabinets are side-
by-side cabinets. Lengths of interconnect cables supplied are based on these standard
floor plans. If a floor plan other than a standard floor plan is used, longer interconnect
cables may be required.
2.4.2
Operating Environment
The equipment room where the base station equipment is installed must meet the
environmental conditions listed in the Station Specifications section of this manual.