In order to confirm that the EMU-1 will be compatible with your system, please look at the gauges on the dashboard to work out the manufacturer (VDO, Faria, US Marine) and the range of values (40 to 140 degrees C, 0 to 5 Bar etc.). When you know those details, please check the gauge compatibility table to see if they match up. The manufacturer of the engine is not relevant.
All of the senders/gauges on the current list are standard resistance senders/gauges. The EMU-1 is not currently compatible with constant current (4-20 mA) senders/gauges. We are always adding more gauges to the compatibility table and EMU Configuration Tool (current total is 50 gauges).
You may notice that there aren't any Tacho (RPM) gauges in the compatibility table. This is because you simply need to know your engines pulses per revolution (PPR) and enter this in to the EMU Configuration Tool. The PPR can be found from your engine manufacturer or in the engine manual. Alternatively, you can calculate your engine PPR using one of the methods described in the EMU-1 User Manual.
When the gauges are to remain in-circuit, the EMU-1 has to be powered from the same supply that is powering the gauges for the engine that it is monitoring. The best way to do this is to wire directly from the back of the positive and GND terminal on the back of the gauge closest to the EMU-1. If the EMU-1 is used to replace the gauges, it will automatically take over the powering of the senders and can be powered as is convenient. Full wiring instructions for the EMU-1 can be found in the “EMU-1 User Manual Issue 1.03.pdf” available on our website
When using a single EMU-1 with two engines, the engines and their senders/gauges must share a common ground.
The EMU-1 will transmit the converted analogue data from your engines gauges/senders as standard NMEA 2000 engine data PGNs, so it will be compatible with MFD’s/PC software that also use these standard NMEA 2000 PGNs. To ensure your engine monitoring display is compatible for use with the EMU-1, please check which NMEA 2000 PGN’s your display supports against the PGN list on the EMU-1 specifications page.
The Actisense NGT-1-USB is required to setup and reprogram an EMU-1. It would be advantageous to leave the NGT-1 on-board as it is a great NMEA 2000 diagnostic tool when working with our feely available software NMEA Reader. As your NMEA 2000/SeaTalkNG network grows, being able to see what messages and devices are on your network will become vital to help you understand any issues:
The Actisense NGT-1 is a very versatile PC Interface that works with a wide range Windows software – please look at its software compatibility page for a list of the software that can be used to display its NMEA 2000 data. That list includes almost all of the major PC chart-plotter software developers and is a good place to start.
The Actisense Toolkit configures the EMU-1 - please see the “EMU Toolkit Manual issue 1.00.pdf” for further details of how to use this software