Simrad Autopilot AP26 - Manual (Page 72)

Simrad AP26 and AP27 Autopilots
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20221586B
SimNet network cables
A SimNet unit has one or two yellow SimNet connectors. There
are no dedicated “in” or “out” connectors. Find the shortest and
easiest way to route the SimNet cables from product to product
and select the standard length cables from the SimNet accessory
program. SimNet cables are available in 0.3 m (1 ft.), 2 m (6.6
ft.), 5 m (16.6 ft.) and 10 m (33 ft.) length all with plugs at both
ends. Connect products with two SimNet connectors in a daisy
chain and use drop cable and T-joiner for products with only one
SimNet connector.
The SimNet power cable has a red connector with built in
terminator.
If you plan to extend your SimNet system in the future it may be
an idea to prepare for it by adding a few T-joiners in central
locations. The T-joiners provides easy access to the network and
can be replaced with a new product, or the new product can be
connected via a drop cable.
SimNet power and termination
The following rules should be observed when installing SimNet.
1. It must have a separate 12VDC power from the battery bus or
the circuit breaker board to avoid interference
2. It must not be connected to the supply voltage terminals of
the Autopilot Computer (introduces interference).
3. It will power and be powered from an IS12 instrument
system.
4. It must be properly terminated.
The SimNet network has to be terminated according to the
number and type of products connected.
In a small system consisting of maximum 5 SimNet products and
a total length of 5 m SimNet cable you need the SimNet power
cable with built in termination (red disc on cable plug).
For additional information about SimNet ask for the separate
SimNet Manual.