|
Locating Components of the system
A
typical system layout showing the various components is shown right:
It is usually
most economical for each building/block will have its own mini system;
this will avoid digging up gardens and streets etc., to install underground
cables between buildings. Several houses or flats that are all within
one building will be supplied by a single head end array. Systems can
range in size from 4No houses to several hundred all off one head end
if they are located in a single block or indeed a string of blocks together.(
e.g. A row of 10No tenement closes each having say 8No houses or flats)
System components are normally located so that they are easily accessible
for future maintenance requirements yet secure from tampering or vandalism.
Generally components will be located in common areas where possible to
avoid inconvenience to residents on access issues where at all possible.
The largest component is the cable distribution network that connects
each outlet to the system electronics and antennas. The cables to be used
in the system are BS EN 50117 compliant and certified by the Confederation
of Aerial Industries LTD for digital reception.
Cables can be run within roof spaces or within cable trunking and conduits
when they need to be brought down inside the buildings. The trunking runs
will essentially be fitted vertically from the roof space down to the
lowest floor in each building. Vertical trunking routes will be decided
on a building by building basis in order to suit the configuration of
each of the common spaces and to be as discreet as possible. Smaller horizontal
trunking runs will tee off in each direction at high level on each landing
towards each house to be fed by the system. This trunking will follow
the line of existing walls etc and will terminate just above the entrance
door (generally) to each flat. A hole will be drilled at high level to
get the feeder cable into each flat/house and once inside the cable shall
travel within a neatly fixed mini-trunking between the entry point and
the position of the new Satellite/TV outlet plate. The mini trunking route
will be discussed with the resident of the flat/house and an agreed route
used to be as aesthetically pleasing to the eye as is possible.
Alternatively, existing subscriber cables can be re-used if they are up
to standard or in some case existing conduit runs used to pull in fresh
cables when an element of future maintenance planning has been built into
older systems at the time of the original installation
A new Triplex Satellite/TV/DAM/FM outlet plate is usually fitted in each
house along with a surface mounted back box in a location near to the
existing TV point.
|