Garmin Reactor„¢ 40 Steer-by-wire Corepack for Viking VIPER„
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Connecting the Autopilot Components to an Existing NMEA 2000 Network A dedicated helm control is not included in all autopilot packages. If you install the autopilot without a dedicated helm control, the autopilot CCU must be connected to the same NMEA 2000 network as a compatible Garmin chartplotter to configure and control the autopilot system. 1 Determine where to connect the CCU and the helm control À (optional) to your existing NMEA 2000 backbone . Á  2 In the location where you plan to connect the CCU, disconnect one side of a NMEA 2000 T-connector from the à network. 3 If necessary, connect a NMEA 2000 backbone extension cable (not included) to the side of the disconnected Tconnector to extend the NMEA 2000 network backbone. 4 Add an included T‑connector for the CCU to the NMEA 2000 backbone by connecting it to the side of the disconnected T‑connector or backbone extension cable. 5 Route the included drop cable to the CCU and to the Ä bottom of the T-connector added in step 4. If the included drop cable is not long enough, you can use a drop cable up to 6 m (20 ft.) long (not included). 6 Connect the drop cable to the CCU and the T-connector. 7 If needed, repeat steps 2 through 6 for the helm control (optional) or a compatible Garmin chartplotter. Connecting Optional NMEA 2000 Devices to the Autopilot System You can use advanced features of the autopilot system by connecting optional NMEA 2000 compatible devices, such as a GPS device, to the NMEA 2000 network. NOTE: You can connect optional devices that are not NMEA 2000 compatible to the helm control through NMEA 0183 (NMEA 0183 Connection Considerations, page 4). 1 Add an additional T-connector (not included) to the NMEA 2000 network. 2 Connect the optional NMEA 2000 device to the T-connector by following the instructions provided with the device. See the included configuration guide for more information on configuring the autopilot. Appendix NMEA 0183 Connection Diagrams The helm control is not included in all autopilot packages. A helm control must be installed in your autopilot system to connect NMEA 0183 devices according to these diagrams. If you install the autopilot without a helm control, all NMEA devices you plan to use with the autopilot system must be connected to a compatible Garmin chartplotter on the same NMEA 2000 network as the CCU. See the installation instructions provided with your chartplotter for NMEA 0183 connection information. These wiring diagrams are examples of different situations you may encounter when connecting your NMEA 0183 device to the helm control. NMEA 0183 Connection Considerations • There is one internal NMEA 0183 input port (RX port) and one internal NMEA 0183 output port (TX port) on the included NMEA 0183 data cable. You can connect one NMEA 0183 device to the internal RX port to input data to this Garmin device, and you can connect up to three NMEA 0183 devices in parallel to the internal TX port to receive data output by this Garmin device. • See the installation instructions for the NMEA 0183 device to identify the transmit (TX) and receive (RX) wires. • The device provides one TX port and one RX port. Each internal port has 2 wires, labeled A and B according to the NMEA 0183 convention. The corresponding A and B wires of each internal port should be connected to the A (+) and B (-) wires of the NMEA 0183 device. • You must use 28 AWG, shielded, twisted-pair wiring for extended runs of wire. Solder all connections and seal them with heat-shrink tubing. • Do not connect the NMEA 0183 data wires from this device to power ground. • The power cable from this device and the NMEA 0183 devices must be connected to a common power ground. • For two-way communication with a NMEA 0183 device, the internal ports on the NMEA 0183 data cable are not linked. For example, if the input of the NMEA 0183 device is connected to TXA on the data cable, you can connect the output port of your NMEA 0183 device to the input port on the wiring harness. • See Specifications, page 5 for a list of the approved NMEA 0183 sentences that are output by and input to this device. • The internal NMEA 0183 ports and communication protocols are configured on the connected Garmin device. See the NMEA 0183 section of the chartplotter owner's manual for more information. Two-Way NMEA 0183 Communication Configuration The autopilot must be configured and tuned to your boat dynamics. You can use the Dockside Wizard and the Sea Trial Wizard on the helm control or a compatible Garmin chartplotter to configure the autopilot. 4