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Raymarine forum / Raymarine Forums / Networking / System Integration v / Output from NMEA 0183 to SeaTalkng convertor

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Output from NMEA 0183 to SeaTalkng convertor
04-17-17, 08:39 AM
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Lew Springer Offline
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Output from NMEA 0183 to SeaTalkng convertor
I am using two NMEA 0183 to SeaTalkng convertors in my system. The units are fed by a GPS via the SeaTalkng backbone and powered by 13.65 volts. In an open circuit condition and the plus output is a steady 13.65 volts and the negative output toggles from 0.64 volts to 12.1 volts. This doesn't seem right as the plus output is always above the negative. My two Icom receivers accept the data properly but a third unit (stabilizer) does not. Shouldn't the plus output be more like 6 volts or so?

I thought one signal line was supposed to be higher than the other for a "1" state and that they reverse for a "0". Any tips you can provide will be appreciated.

Is an equivalent circuit schematic for the convertor output available?
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Output from NMEA 0183 to SeaTalkng convertor - Lew Springer - 04-17-17 08:39 AM

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