[CA] [CA11] STLK Fail Lightning Issue

[Chuck - Raymarine - Moderator]

svbloom,

It appears that you may need some reference material to aid in understanding a SeaTalkng / NMEA 2000 network ... it may be found here. Your diagram appears to be incomplete and incorrect with regard to the following items:
- The diagram incorrectly shows Spur cables connected to the backbone socket of 5-Way Connectors. Backbone sockets are used to connect 5-Way Connectors, T-Pieces, iTC-5, and ST-STng Converters to one another. Such connections are accomplished via an appropriate length of SeaTalkng Backbone Cables.
- The backbone lacks termination. One SeaTalkng Termination Plug should be installed within each to the backbone's two end sockets.
- The iTC-5 should be installed as a backbone component rather than a spur to the backbone. Accordingly, it's backbone socket would be joined to the blue backbone socket of one of the 5-Way Connectors via an appropriate length of SeaTalkng Cable.
- If the AIS receiver/transceiver features a SeaTalkng / NMEA 2000 communications interface, then it should be interfaced as a spur to the system's powered and properly terminated SeaTalkng / NMEA 2000 backbone rather than to the MFD's NMEA 0183 communications interface.
- The diagram incorrectly shows four devices being daisy chained to one another within a single spur ... the limit is three and the maximum total length of spur cable should not exceed 6m. As a best installation practice, each device featuring a SeaTalkng / NMEA 2000 communications interface would be installed as an individual spur to the backbone. See the previously referenced FAQ addressing devices installed within a binnacle.
- The i70S features a single SeaTalkng / NMEA 2000 socket and as such cannot be installed in the middle of a daisy chain.
- The rudder transducer is incorrectly shown as being attached to the iTC-5. It must instead be interfaced directly to the ACU.

The only in-hull instrument transducers offered by Raymarine are both depth transducers. These transducers are the T70278 P79 Depth transducer featuring a SeaTalkng / NMEA 2000 communications interface (interfaces as a spur to the backbone) and the E26001-pz P79 Depth transducer featuring an analog interface (must be interfaced to the iTC-5.