[CA] [CA11] SeaTalk hs switch with axiom pro

[Chuck - Raymarine - Moderator]

Never II Nauti,

Your diagram attempts to show how a SeaTalkng / NMEA 2000 backbone would be used to interface the Data Master MFD to the engine gateways. Please click here to view a document concerning how to construct a powered and properly terminated SeaTalkng / NMEA 2000 backbone from Raymarine's SeaTalkng networking components.

Many older Icom VHF radios required that the receive NMEA 0183 data feature the $GP NMEA 0183 Talker ID. If the system will utilize an external GPS sensor (typically recommended if at least one of the system's MFDs will not be installed in a location affording it an unobstructed view of the skies overhead), then please click here to view a FAQ addressing how the Icom VHF radio may be supplied with GPS data from the system.

Q1. Do I run into any possible data challenges as set up?
A1. Not really ... see the comments above.

Q2. Can you give me guidance on best place to connect the autopilot?
A2. I would recommend using the NMEA 0183 communications interface of the AP25 to interface it to the system. This may be accomplished in either of the following two ways:

- interface the NMEA 0183 input and output terminals of the AP25 to an NMEA 0183 to NMEA 0183 data bridging device (ex. Actisense NGW-1-ISO, etc.) which in turn will be interfaced to a spur socket within the system's properly terminated SeaTalkng / NMEA 2000 backbone.

- interface the NMEA 0183 input and output terminals of the AP25 to the NMEA 0183 Port 1 input and output leads of any one of the system's MFDs (excluding the one that will be interfaced to the VHF radio).

Q3. Can you tell me if my GPS antenna from the E120 is usable? Connect to where, if so? (Sorry, I do not have a model number)
A3. Unfortunately, it would be necessary to know the make/model of GPS sensor which is presently installed onboard the vessel. Raystar 125 GPS Sensors may be adapted (with a SeaTalk to SeaTalkng Converter) to be interfaced to the system's SeaTalkng / NMEA 2000 backbone. Raystar 130 / 150 GPS Sensors may be directly interfaced as a spur to the system's SeaTalkng / NMEA 2000 backbone.

Q4. If I replace GPS with an RS150, where would I connect it?
A4. See the response to Q3. The SeaTalkng / NMEA 2000 backbone must feature a sufficient number of spur sockets to permit each device to be interfaced as an individual spur to the system's SeaTalkng / NMEA 2000 backbone.