Andrew G
New member
Hi all. I am trying to input a GPS’ NMEA 0183 output into the “NMEA In” terminals of my Raymarine ST4000+ Autopilot. By my reading of the manual, the GPS’ NMEA + (& -) should go into the AP’s NMEA+ (& -) and the AP then outputs the data as SeaTalk (ST) on the ST bus. BUT I get no positional or time information on the ST bus. (I have tried switching the + and –s)
I cannot see any configuration changes etc. that I have to make - does anyone have first hand experience in this?
(One option is that my AP is partially stuffed.)
{By way of background, my ST GPS (Raymarine 120) died because if a $2.50 internal battery. I have replaced the GPS with a reputable 50 channel NMEA-out unit. If I connect the GPS as NMEA In to my chartplotter it works (but does alarm a few times an hour – another issue - I suspect not the GPS’ fault). There are always 12+ high signal-strength satellites in view. I’ve been using the same cable and connections for input to alternatively the chartplotter or the ST4000+. The chartplotter does successfully convert the NMEA data to ST and puts it on the ST bus. I had hoped to not need to have the chartplotter switched on at all times by simply inputting the NMEA directly into the NMEA In of the AP.}
Regards, Andrew
I cannot see any configuration changes etc. that I have to make - does anyone have first hand experience in this?
(One option is that my AP is partially stuffed.)
{By way of background, my ST GPS (Raymarine 120) died because if a $2.50 internal battery. I have replaced the GPS with a reputable 50 channel NMEA-out unit. If I connect the GPS as NMEA In to my chartplotter it works (but does alarm a few times an hour – another issue - I suspect not the GPS’ fault). There are always 12+ high signal-strength satellites in view. I’ve been using the same cable and connections for input to alternatively the chartplotter or the ST4000+. The chartplotter does successfully convert the NMEA data to ST and puts it on the ST bus. I had hoped to not need to have the chartplotter switched on at all times by simply inputting the NMEA directly into the NMEA In of the AP.}
Regards, Andrew