Actisense NGW-1-ISO NMEA Gateway connections

NGW-1-ISO converts supported NMEA 0183 sentences and NMEA 2000 PGNs. This is the ISO cable version, not NGW-1-USB: its operating supply comes from a powered NMEA 2000 backbone. The manual specifies 35 mA at 12 V, maximum 50 mA and LEN 1. Add that demand to the network power budget. The gateway’s internal 9.5–35 V tolerance does not authorize running other NMEA 2000 equipment from a 24 V boat bank.

On the ISO/0183 cable, red is IN A/+ and black IN B/−, accepting the other device’s talker output. White is OUT A/+ and blue OUT B/−, feeding its listener input. The cable’s shield/screen is marked ISO GND and is left unconnected in the standard device-to-device diagram. These red and black wires are signal inputs, not battery leads. Check A/B labels at both devices, since naming and colors differ between manufacturers.

Connect the Micro-C drop to a correctly powered and terminated NMEA 2000 network. Use a compatible adapter if the vessel has a proprietary connector system. Do not attach loose battery leads to the 0183 interface. The symbol intentionally offers data connector markers rather than standalone DC terminals; it cannot calculate power delivery inside a NMEA backbone. Protect and size the backbone feed for all connected devices.

Match the 0183 baud rate and enable only the sentences/PGNs required by the connected equipment. Actisense Toolkit configures supported firmware; confirm the actual firmware and conversion list before promising an instrument value will translate. A flashing receive indicator proves incoming traffic, not that a matching conversion is enabled or received by the destination. If one direction fails, check the source’s talker pair, destination’s listener pair, baud rate and conversion settings in that order.

Actisense installation manual, User Manual v3.2; pp. 4–6 for power and wiring, pp. 8–11 configuration, p. 12 specifications. The original PDF is retained in the marine source ledger. The drawing represents the identified electrical interfaces; it does not simulate the equipment’s mechanical performance, radio signals or fluid system. Unpublished connector ampacity and startup current remain unspecified.