So, I finally received my Globalmap.
I have just tried to network it using NMEA 0183 with my 334 and big suprise… It didn’t work!
I can’t figure out what I’m doing wrong. They both work fine individually. However, I got one of the 334’s with a poor internal antenna, so I would like to network them, so I can use the external antenna for both.
So far I have tried this:
Connected the yellow NMEA wire of the 7200C with the Orange of the 334
Connected the Orange NMEA wire of the 7200C with the Yellow of the 334
I haven’t use the Blue and ground wire.
Set baud rate of both units to 4800
Marked NMEA output and input on both units.
Crossed the same GPS protocols on both unit (GLL, RMC and RMB, APB, GGA, GSA and GSV). Don’t know if this is important.
Tried to disconnect the internal antenna of the 334, but I can’t. I can remove the x next to “set active” in the NMEA 2000 menu but as soon as I leave the menu, the internal antenna is active again. If I remove the x once move, the same thing happens again.
The first time I tried to disconnect the antenna, I got a popup that said something about turning “auto GPS” off, but I can’t find anythng in the manual about auto GPS.
So I have some questions:
1. Do I need to connect the ground wires (I have tried this briefly, which didn’t help)?
2. Should I be able to turn off the internal antenna no matter what, or does the unit need to detect another antenna first?
3. Can anyone give me an idea on what I’m doing wrong?
Thanks,
Granne