jimh wrote:porthole wrote:Dual HDS Gen3 devices that are networked via NMEA-2000 and Ethernet cable do not share AIS data.
I don't understand this statement. Neither HDS Gen-3 is the originator of any AIS data. How could they share something neither of them originates? AIS data comes from an AIS Receiver and the data output from that receiver.
I rephrased the comment.
I thought it was understood based on previous posts that the original HDS was connected to a Standard Horizon GX-2200 outputting AIS data.
Perhaps in my simple concept of the whole connectivity experience I kind of expected that the AIS data on the #1 HDS would mirror to the #2 HDS.
Just as it does for multiple items such as waypoints, routes and trips,
jimh wrote:I think you have an unreasonable expectation. I think you are expecting that one of your HDS devices is getting some AIS data from a NMEA-0183 connection, and you expect this data to be sent to the other device via "NMEA-2000 or Ethernet." Such an action by the HDS would require it to be able to receive AIS data from its serial port in NMEA-018 protocol, then translate that data into NMEA-2000 protocol data parameter groups and transmit those PGNs to its NMEA-2000 network; then do the same data translation and electrical translation for its Ethernet network--but there is no standard in existence for transporting NMEA-0183 or NMEA-2000 over Ethernet that I know of, nor does Lowrance make any claim it can do this in an HDS. Actually, I doubt you can find any device that can do this sort of translation from one protocol to another, then a third translation to encapsulate and transmit the data on a third protocol.
Not everyone has your understanding of the theory behind this stuff, myself included.
When waypoints, routes, display brightness adjustments, numerous settings, auto pilot, two different SONAR transducers displaying 3 different SONAR screens and various other items are displayed or active between both units, I would think it is not unreasonable to expect the AIS data on one device to display on another device.
I would also think the displayed navigation "Goto" data would be available on both networked HDS units, but it is not.