Building A Basic Nmea 2000 Network For The Ghc 10 And The Ccu; Connecting Optional Devices To The Ghp 20 Autopilot System; Nmea 0183 Connection Considerations; Connecting An Optional Nmea 0183-Compatible Device To The Ghc 10 - Garmin GHP 20 Marine Autopilot System for Steer-by-Wire Installation Instructions Manual

Building a Basic nMEa 2000 network for the GHC 10 and
the CCu
You must connect the included NMEA 2000 power cable to the boat
ignition switch, or through another in-line switch. The GHC 10 will
drain your battery if the NMEA 2000 power cable is connected to the
battery directly.
1. Connect the three T-connectors ➊ together by their sides.
➍
-
+
➌
➋
➊
➑
2. Connect included NMEA 2000 power cable ➋ to a 12 Vdc power
source ➌ through a switch.
Connect to the ignition switch ➍ of the boat if possible, or through
an in-line switch (not included).
3. Connect the NMEA 2000 power cable to one of the T-connectors.
4. Connect one of the included NMEA 2000 drop cables ➎ to one of
the T-connectors and to the GHC 10 ➏.
5. Connect the other included NMEA 2000 drop cable to the other
T-connector and to the CCU ➐.
6. Connect the male and female terminators ➑ to each end of the
combined T-connectors.
10
Notice
➏
➎
Connecting optional Devices to the GHP 20
autopilot System
To use advanced features of the GHP 20, an optional NMEA
2000-compatible or NMEA 0183-compatible GPS device can be
connected to the NMEA 2000 network or to the GHC 10 through
NMEA 0183.

nMEa 0183 Connection Considerations

• To identify the Transfer (Tx) A(+) and B(-) wires for your NMEA
0183-compatible device, consult the installation instructions for
your device.
➐
• When connecting NMEA 0183 devices with two transmitting and
two receiving lines, it is not necessary for the NMEA 2000 bus and
the NMEA 0183 device to connect to a common ground.
• When connecting a NMEA 0183 device with only one transmitting
(Tx) line or with only one receiving (Rx) line, the NMEA 2000
bus and the NMEA 0183 device must be connected to a common
ground.
Connecting an optional nMEa 0183-compatible Device to
the GHC 10
1. Determine the NMEA 0183 connection assignments of your NMEA
0183-compatible device.
2. Connect your NMEA 0183-compatible device to the GHC 10, based
on the table below.
GHC 10 Data Cable Wire Color Function
➑
Blue
White
Brown
Green
Three examples of various connection situations are provided in the
appendix (page
3. If necessary, use 22 AWG (.33 mm
runs of wire.
4. Solder and cover all bare-wire connections.
Tx/A (+)
Tx/B (-)
Rx/A (+)
Rx/B (-)
14).
) twisted-pair wire for extended
2
GHP 20 Installation Instructions