Garmin GHP Compact Reactor Hydraulic Installaiton Instructions

Contents

• The internal NMEA 0183 ports and communication protocolsare configured on the connected Garmin device. See theNMEA 0183 section of the chartplotter owner's manual formore information.• The ground wires on the NMEA 0183 data cable and yourNMEA 0183 device must both be connected to ground.• When connecting NMEA 0183 devices with two transmittingand two receiving wires, it is not necessary for the NMEA0183 devices to connect to a common ground.• When connecting a NMEA 0183 device with only onetransmitting (Tx) wire or with only one receiving (Rx) wire, theNMEA 0183 devices must be connected to a commonground.• For two-way communication with a NMEA 0183 device, theinternal ports on the NMEA 0183 data cable are not linked.For example, if the input of the NMEA 0183 device isconnected to the internal output port 1 on the data cable, youcan connect the output port of your NMEA 0183 device toany of the internal input ports (port 1, port 2, port 3, or port 4)on the wiring harness.• There are four internal NMEA 0183 input ports (Rx ports),and two internal NMEA 0183 output (Tx ports) on theincluded NMEA 0183 data cable. You can connect oneNMEA 0183 device per internal Rx port to input data to yourGarmin device, and you can connect up to three NMEA 0183devices in parallel to each internal Tx port to receive dataoutput by your Garmin device.Two-Way NMEA 0183 CommunicationÀ NMEA 2000 network (provides power to the helm control)Á 12 Vdc power sourceÂ Helm controlÃ NMEA 0183-compatible deviceWire Helm Control Wire Color —FunctionNMEA 0183-CompatibleDevice Wire FunctionÊ N/A PowerË N/A NMEA 0183 groundÌ Blue — Tx/A (+) Rx/A (+)Í White — Tx/B (-) Rx/B (-)Î Brown — Rx/A (+) Tx/A (+)Ï Green — Rx/B (-) Tx/B (-)NOTE: When connecting a NMEA 0183 device with twotransmitting and two receiving lines, it is not necessary for theNMEA 2000 bus and the NMEA 0183 device to connect to acommon ground.Only One Receiving WireIf your NMEA 0183-compatible device has only one receivingwire (Rx), it must be connected to the blue wire (Tx/A) from thehelm control, and the white wire (Tx/B) from the helm controlmust remain unconnected.À NMEA 2000network (provides power to the helm control)Á 12 Vdc power sourceÂ Helm controlÃ NMEA 0183-compatible deviceWire Helm Control Wire Color —FunctionNMEA 0183-CompatibleDevice Wire FunctionÊ N/A PowerË N/A NMEA 0183 groundÌ Blue — Tx/A (+) RxÍ White — unconnected N/AÎ Brown — Rx/A (+) Tx/A (+)Ï Green — Rx/B (-) Tx/B (-)NOTE: When connecting a NMEA 0183 device with only onereceiving (Rx) line, the NMEA 2000 bus and the NMEA 0183device must be connected to a common ground.Only One Transmitting WireIf your NMEA 0183-compatible device has only one transmittingwire (Tx), it must be connected to the brown wire (Rx/A) from thehelm control, and the green wire (Rx/B) from the helm controlmust be connected to NMEA 0183 ground.À NMEA 2000 network (provides power to the helm control)Á 12 Vdc power sourceÂ Helm controlÃ NMEA 0183-compatible deviceWire Helm Control Wire Color —FunctionNMEA 0183-CompatibleDevice Wire FunctionÊ N/A PowerË Green — Rx/B (-) (connect toNMEA 0183 ground)NMEA 0183 groundÌ Blue — Tx/A (+) Rx/A (+)Í White — Tx/B (-) Rx/B (-)Î Brown — Rx/A (+) Tx/A (+)NOTE: When connecting a NMEA 0183 device with only onetransmitting (Tx) line, the NMEA 2000 bus and the NMEA 0183device must be connected to a common ground.10

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