[CA] iTC-5 as an interface to ST1 Displays

[Chuck - Raymarine - Moderator]

Brian,

The diagram looks good now.

Q1. Is it still okay to power the STng network as shown? So the ST1 network will still be powered from the Autopilot and the new STng network will be powered through the iTC-5?
A1. Yes. A SeaTalkng Power Cable may be connected to the spur socket (white) of the iTC-5. While not considered a best practice for installing power circuits for marine electronics, powering the SeaTalkng backbone from the same power circuit which is powering the autopilot will work.

Q2. In the future, I'm looking at replacing the E80 with an Axiom 9. Would the ST1 to STng converter be required then or would the Actisense still be necessary?
A2. Unlike the Axiom Pro MFDs, the Axiom MFDs do not feature a NMEA 0183 communications interface. Unless the autopilot course computer also changed (additionally requires replacement of the autopilot control head and fluxgate compass), then use of the SeaTalk to SeaTalkng Converter would not be supported within the system. That said, it would be permissible to disconnect the current autopilot course computer and autopilot control head from the system and then use the Actisense NGW-1 to support bridging data from the SeaTalkng / NMEA 2000 backbone to the autopilot's NMEA 0183 input port. Doing so would also then permit the SeaTalk to SeaTalkng Converter to then be installed and support data bridging between the SeaTalkng / NMEA 0200 backbone and the ST60/60+ Instruments.