A
Anonymous
Guest
just installed a butt-simple system consisting of:
TZTouch2, 15", running latest 2.05 firmware
Transducer
Icom M506 VHF, N2K, but no AIS, running latest 1.004 firmware
The TZ2 and M506 are connected via N2K. It would be really hard to have a simpler system. But it doesn't work.
The TZ has a built in GPS, and it can send the GPS info out on the N2K bus to share with other devices like the VHF. That's nice and is something I was counting on, but it doesn't work. The TZ has a good GPS fix, but the VHF won't accept it.
Looking with an analyzer, the TZ is sending the GNSS PGN (129029) as it should, but the VHF isn't accepting it and continues to show no GPS data. Looking at the PGN contents, I see the "Position Date" and "Position Time" fields show "not available", and the "Integrity" field is zero. The actual lat/lon data is good and is updating as it should. If I hook up an external N2K GPS, the VHF accepts it fine. Interestingly, the PGN from the external GPS has the "Position Date", "Position Time", and "Integrity" fields filled in with valid data. Now of course the actual meaning of all these fields is super double top secret NMEA confidential information, but if I were a betting man, I'd say the TZTouch2 is sending an invalid GNSS PGN.
Having just spent about $5000 for this stuff, I am really, really pissed off that this most basic and simple thing doesn't work.
TZTouch2, 15", running latest 2.05 firmware
Transducer
Icom M506 VHF, N2K, but no AIS, running latest 1.004 firmware
The TZ2 and M506 are connected via N2K. It would be really hard to have a simpler system. But it doesn't work.
The TZ has a built in GPS, and it can send the GPS info out on the N2K bus to share with other devices like the VHF. That's nice and is something I was counting on, but it doesn't work. The TZ has a good GPS fix, but the VHF won't accept it.
Looking with an analyzer, the TZ is sending the GNSS PGN (129029) as it should, but the VHF isn't accepting it and continues to show no GPS data. Looking at the PGN contents, I see the "Position Date" and "Position Time" fields show "not available", and the "Integrity" field is zero. The actual lat/lon data is good and is updating as it should. If I hook up an external N2K GPS, the VHF accepts it fine. Interestingly, the PGN from the external GPS has the "Position Date", "Position Time", and "Integrity" fields filled in with valid data. Now of course the actual meaning of all these fields is super double top secret NMEA confidential information, but if I were a betting man, I'd say the TZTouch2 is sending an invalid GNSS PGN.
Having just spent about $5000 for this stuff, I am really, really pissed off that this most basic and simple thing doesn't work.