Most modern electronic engines have a digital interface called J1939. Maretron’s J2K100 is a gateway that converts the J1939 protocol to marine industry standard digital protocol called NMEA 2000. The J2K100 converts many engine parameters including RPM, boost and oil pressure, oil and coolant temperature, voltage, fuel rate, engine hours and more depending on the particular engine. The GPS antenna/receiver (GPS200) provides the vessel’s speed that allows the display to compute and show the fuel economy (gallons/hour or liters/kilometer).
The following table shows the products included within this example system plus a list of the information or data available for display.
|Product||Description||Available Data List|
|DSM250||Display||5.7” Display shows data in this list, monitors the data and sounds an internal buzzer if there is a problem|
|J2K100||Engine Monitor||Monitors RPM, boost and oil pressure, oil and coolant temp, voltage, fuel rate, hours, and more depending on the particular engine|
|GPS200||Cabin Top GPS||Position, speed over ground, course over ground, time, date, magnetic variation and more|
The following screenshots (click to enlarge) are examples of how the engine status will be displayed on the DSM250.
COG Course Up Rose
Engine Coolant and Oil
Engine Fuel Economy
Engine Fuel Rate
Engine Pressures and Load
Engine Tachometer Gauge
Local Time and Date
SOG and COG Digital
UTC Time and Date