Installation guide

Chapter 2: Run the Cables 8
Common Cables
Although the cable that connects to each type of pinspotter is different, there are several cables that are used
for some or all of the different classes of system.
LLAN Communications Backbone
The LLAN cable is used in Type A, Type B and Type C systems.
The LLAN is the main communications backbone between all components of the Duo system. The LLAN cable
can be of varying lengths in different situations. However, the wiring of this cable is always the same. It is used to
make the main communications connection the Duo CPU module, the Duo Camera Module and also the Duo
Bowler’s keypad.
Note: All cables should be routed as far as practical away from sources of power or
RF interface such as fluorescent lights and transformers.
It is important to consider occupational health and safety issues when routing
these cables. Each installation will vary depending upon the nature of the
ceiling, however minimum precautions should include gloves, eye protection,
and a dusk mask. An approved platform should be used to give safe access to
the ceiling. Some ceilings may have insulation and therefore require protective
clothing to be worn. If in doubt about the nature of this task it is advisable to
contract a licensed electrical contractor to route the cables.