GeoDesy FSO Pluto Mobility - Manual (Page 11)

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11
Horváth Holding
Investment PLC.
4 Sites of installation
4.1 Key factors of operation
Pluto Mobility was designed to cover only about 20 meters with a wide transmitter
beam; the following should be taken into consideration, to decrease the factors
causing inconveniences during every day use. There are four key issues that the site
survey has to shed light on. Proper system operation cannot be guaranteed without
satisfying all of the four requirements. Pluto Mobility is only for indoor use, not
suitable for outdoor use.
Clear line of sight
- The entire optical path between the two ends must be free of any obstacles. It not
only means that one has to see the other side, but other possible sources of
disturbance should also be taken into consideration.
Solid mount surface
- is the key for long-term operation. Since the diameter of the beam is limited, it is
extremely important to mount the unit on a stable structure with the possible smallest
movement. This way the receiver of the remote unit cannot get out of the beam due
to the movement of the opposite head.
East-West orientation
- although the receiver optics are equipped with optical filters to protect the receiver
diode from the effect of undesired light sources, direct sunshine can cause
saturation of the diode. This prevents the system from working properly for several
minutes a day at certain times of the year. In most cases this effect can be avoided
by careful selection of the mounting spot.
In order to comply with the requirements of the successful installation - including the
discussed four key factors and other criteria - the following matters should be taken
into consideration.
4.2 Preferred installation sites
All buildings and constructions have a certain movement of their own. It’s
determined by the structure and material of the building. Metal structures can shift or
twist due to temperature changes. Wooden construction can expand or shrink with
any changes in humidity. Give preference to concrete or brick buildings. On the
other hand high structures like towers, skyscrapers or poles are always subject to
movement. Mount the support frame to walls of the building or near corners, as they
are the most stable spots. Use appropriate consoles for wall mounting. If a stand is
used on the top of Building, secure it directly to the ceiling or to the concrete cornice