IS12 Wind Speed/Angle
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E04054
4.3 Electrical Installation
IS12 instruments are ‘daisy chained’ together, with each instru-
ment linking to the previous one by a single cable carrying
power and data (Fig 4.14). The cable plugs into either of the
two circular network ports on the rear of the instrument.
Fig 4.14 - IS12 “Daisychain” Cable System
The cable connectors are keyed so that they will always be cor-
rectly oriented when inserting the cable into the instrument -
the flattened edge of the connector should be facing down
when inserting (Fig 4.15) -
Fig 4.15 - Rear Connections
The first link in the IS12 system is the power cable, which
should be connected to the boat’s 12v DC supply via a 3 Amp
breaker or fuse as follows -
Red wire - 12v DC
Black wire - 0v
NOTE Only one power cable is required in an IS12 system, but
power must be supplied via an IS12 power cable (with a red
connector end), or the system will not function.
Flattened edge
Network Bus Ports
