February 28, 2007 13:06
Is the plan to consolidate all NMEA data received by MacENC into the TCP/IP stream without modification? It would be of benefit (IMHO) to have some control over which NMEA sentences gets consolidated into the TCP/IP stream. There are at least two possible approaches.
A. Provide for preference selection of which sentence from an NMEA input stream gets consolidated into the TCP/IP stream.
B. Only consolidate the “good” (cause a “green dot” display) sentences from an input stream into the TCP/IP stream.
Either would be required to make TCP/IP workable in a Raymarine systems configuration. This is because the information in the NMEA sentences vary (so does the sentences generated) depends on which RM device is used to convert the Seatalk to NMEA. Usually this means getting NMEA data from two or more streams – one for GPS, Route, Waypoint etc, related data and one for instrument data but the instrument stream can contain GPS sentences with incomplete data. Two copies of sentences with different data in the same stream would confuse the receiving systems.
Ray
A. Provide for preference selection of which sentence from an NMEA input stream gets consolidated into the TCP/IP stream.
B. Only consolidate the “good” (cause a “green dot” display) sentences from an input stream into the TCP/IP stream.
Either would be required to make TCP/IP workable in a Raymarine systems configuration. This is because the information in the NMEA sentences vary (so does the sentences generated) depends on which RM device is used to convert the Seatalk to NMEA. Usually this means getting NMEA data from two or more streams – one for GPS, Route, Waypoint etc, related data and one for instrument data but the instrument stream can contain GPS sentences with incomplete data. Two copies of sentences with different data in the same stream would confuse the receiving systems.
Ray