Motorola DIMETRA MTS 2, Инструкция по установке, настройке и базовому обслуживанию

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Site Survey Chapter 3: Site Preparation
Site Survey
The site must be carefully inspected or surveyed using appropriate site survey forms
before orders are placed for the equipment.
A technical representative from both the customer and the site owner should preferably be
in attendance for total concurrence at a single given time.
In order to minimize any misunderstandings, which may arise in the future, the survey report should be approved
by all the attendees at the site survey. The site survey should address all relevant issues involving the MTS
site installation. All involved parties should be in agreement on all of the issues before any work commences.
The site survey issues typically include the following items:
•
The potential location of the MTS Cabinet, size of the equipment room, and
the doorway or access into it. Access around the MTS shall include adequate
clearance for cabinet front door opening.
•
Verifying the suitability of the existing heating-ventilation-air conditioning (HVAC)
and other environmental criteria in relation to the MTS equipment (see Table 3-5,
"Typical Power Loads and Heat Dissipation Values - Expansion Cabinet UHF
Con
fi
guration," on page 3-17 , later in this chapter).
•
The power requirements for the site.
•
A check of the history of local voltage and frequency variations together with the
possibility of interruptions of the supply to the site.
•
The stand-by power requirements for the site.
•
The location of the mains power distribution.
•
The location of the network terminating unit (NTU) for the X.21 or E1 leased line.
•
The location of telephone connections.
•
The location of the building earth and the tower earth.
•
Inspection/Test of the building and tower earth.
•
The suitability, space availability, and location of the cable entry point into the equipment room.
•
The suitability and location of the existing lightning arrestors.
•
The suitability, space availability, and location of the existing cable tray or ladder rack between
the equipment room and the antenna tower or the antenna system support structure.
•
Checking the cable access route into the equipment room.
•
Identifying the type of tower and the type of structure on which the GPS antenna will be mounted.
3-2
6802800U74-N September 2009