ViaSat 8010 Series, Руководство по подготовке площадки

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Chapter 1 - General Information
Chapter 1
General Information
1.1 Introduction to Manual
This manual contains information needed to properly locate and install the
foundation for the 7-meter (7M) earth station antenna (110° and 180° travel).
Chapter 1 provides general information and provides antenna site selection
criteria for the 110° and 180° antenna, Chapter 2 provides the foundation
installation information for the 110° mount, and Chapter 3 provides the
foundation installation information for the 180° mount. All warnings and
cautions should be reviewed before any procedures are performed. Failure
to do so may result in personal injury or equipment damage.
1.2 Site Selection
Selection of the antenna site is one of the most important factors to
considered for trouble-free, high quality signal reception from and
transmission to the desired satellites. For optimal signal reception and
transmission, it is imperative that the antenna site provide the proper
mechanical and boresight clearance, and the absence of signal interference.
1.2.1 Mechanical Clearance
The site must allow clearance for all antenna movements (both azimuth and
elevation) necessary for aiming, commissioning, and maintenance purposes.
Refer to the outline dimensions provided in chapters 2 and 3 for the plan and
elevation views to determine the required clearances.
1.2.2 Boresight Clearance
A clear line-of-sight is required between the antenna and any desired
satellites. There must be no trees, buildings, power lines, fences, or other
obstructions between any desired satellite and any portion of the reflector.
Anything which obstructs the view of the satellite from even a small portion
of the reflector will result in degraded performance.
1.2.3 Absence of Signal Interference
It is critical that the antenna site selected be free of strong microwave or other
signal interference. Microwave systems in the vicinity of an antenna site can
cause interference. If a known source of interference (e.g., a Bell System
microwave tower) is close by, it may be necessary to have a signal survey
performed to determine if the selected site is suitable.
42S045D 1-1