Joe — you should be able to identify what the DY AIS is doing by looking at the serial output via HyperTerminal on your laptop (assuming you have a way to get serial in, like an RS232 to USB adapter).
— Fred Fred Street -- Minneapolis S/V Oceanis (1979 C&C Landfall 38) -- on the hard in Bayfield, WI :^( > On Oct 30, 2017, at 10:03 AM, Della Barba, Joe via CnC-List > <cnc-list@cnc-list.com> wrote: > > The old AIS was tested on my Sunday afternoon sail and got about 15 targets. > It is now off the boat to be shipped to its new owner. The new one is on the > way, a Digital Yacht AIT1500. So now I need to redo the various NMEA > connections and the first thing I am trying to figure is the DSC-in signals. > The VHF has a DSC-out and apparently the new AIS does too, but it does not > seem to be documented. The manual mentions once receiver switches back and > forth between DSC and AIS, but does not mention what sentences it sends out > or on what outputs. My initial plan is to have the VHF DSC out go to the AIS > NMEA in and then it can combine DSC messages it hears with whatever the AIS > picks up. I am planning for now for the AIS to provide data for the nav > computer and VHF, the cockpit plotter will get the AIS info from the AIS and > GPS data either from its own receiver or the AIS unit, and the APRS will have > its own low power GPS so I can turn everything off but APRS when I am not on > the boat. More to follow, but that is plan so far. One frustration is for > some reason the CP180 plotter will NOT take a GPS fix on any input but 4800 > baud port 3, so even though the AIS will send all the GPS data along with AIS > on 38K baud, the plotter won’t read the GPS sentences at that speed on ports > 1 or 2. OpenCPN has no such restriction, so one connection will do for that. > > Joe > Coquina > C&C 35 MK I
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