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 8” touchscreen monitors all the engine data and sounds the external buzzer if any parameter goes out of range. The data recorder gives a complete record of all monitored parameters.
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 |
| TSM800C | Helm Display | 8” Touchscreen displays data in this list, monitors the data and if there is a problem will sound external buzzer. |
| ALM100 | Alarm buzzer | Sounds a loud buzzer when any monitored data in this list goes outside programmed limit |
| J2K100 | Port Engine | Monitors RPM, boost and oil pressure, oil and coolant temp, voltage, fuel rate, hours, and more depending on the particular engine |
| J2K100 | Starboard Engine | 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 |
| VDR100 | Vessel Data Recorder | Performance analysis, vessel tracking, preventative maintenance, warranty incident, and accident investigation |
This file requires Maretrons free NMEA 2000® network design tool N2KBuilder® to be installed on your PC.
The following components (click to enlarge) are examples of how monitored data can be displayed on the TSM800C using N2KView. The components are arranged on favourite screens at positions and sizes to suit the users needs. See N2KView web page for examples of full screenshots.
Afternoon Twilight
Anchor Watch
Clock
COG Digital
COG Head Up Rose
COG North Up Rose
Course Over Ground Digital
Distance to Empty
Engine Coolant Temperature
Engine Coolant Temperature Digital
Engine Fuel Economy
Engine Fuel Rate Digital
Engine Fuel Rate Gauge
Engine Hours
Engine Load Gauge
Engine Oil Pressure Bar Graph
Engine Oil Pressure Digital
Engine Oil Pressure Gauge
Engine Room Video with PTZ
Engine Tachometer Gauge
GPS Status
Lat and Long
Lat and Long Degrees
Lat and Long DMS
Local Date
Local Date DMY
Local Date MDY
Moon Phase
Sunrise
Time to Empty
UTC Time
Variation
