2016-05-31, 09:57 PM
(2016-05-31, 08:29 AM)gowzel Wrote: I think that my converter could be faulty. I have set it up to input the GPS nmea data into the AIS engine, the red led is flickering away and I have a 2.2V to 0V signal out of the converter into the AIS. And I have a slower 0V to 0.25V signal on the black and screen wire from th AIS engine. But there is a permanent 4.6 V between R- and R+ and between R+ and GND on the converter. With no signal being sent or received surely there should not be 4.6V there.
Anyone able to test there own?
Thanks,
John
I don't have the Sailoog converter and I can't find the schematic for that device.
I did connect my AIS tonight to a homebrew NMEA mux and it does not work.
This leads me to believe the NASA AIS is only compatible with NMEAv1 which is RS232 compliant , not RS422 as with the Sailoog converter.
Your converter may not be faulty at all.
You may want to get a serial to USB converter, they can be found on eBay for a few dollars. Mine works like a charm with the NASA AIS.
Hope this helps