The latest Garmin echoMAP 40S, 50S, 70S and 90S units all have at least one NMEA0183 port that our Sonar Server can be connected to. The smaller 40S range and latest 90S range only have one NMEA0183 Port but the 50S and 70S ranges have two ports.
Some of the units are designated “dv” and feature the DownVu sonar, while units designated “sv” have the SideVu Sonar, but in terms of connectivity all of the units are the same.
All of the units across the range share the same basic operation and a typical wiring diagram for the single port 40S and 90S Series can be seen by clicking here, or for the dual port 50S and 70S ranges by clicking here.
It should also be noted that the latest GPSMAP 547 and 741 units have the same two port configuration and wiring as the 50S and 70S ranges.