What are the power requirements of the EMU-1?

The EMU-1 can operate between 9 and 35 VDC and will typically use 25mA at 12 VDC.

If the engine gauges are to remain in-circuit, the EMU-1 must be powered from exactly the same power supply as the gauges otherwise the EMU-1 measurements will not being accurate. The EMU-1 gauge ground and the EMU-1 power ground must be common to prevent ground loops. Check that if the instrument gauge panel includes a reverse protection diode between the power supply and the actual gauge supply connection, the EMU-1 is correctly powered from the gauge supply connection.

For more information on NMEA 2000 and how it works, please download our free guide to NMEA 2000 networking here: https://actisense.com/complete-guide-to-building-an-nmea-2000-network/