10
GHP 20 Installation Instructions
Building a Basic nMEa 2000 network for the GHC 10 and
the CCu
Notice
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.
+
-
➊
➋
➎
➏
➐
➑
➑
➍
➌
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.
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.
• 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
Blue
Tx/A (+)
White
Tx/B (-)
Brown
Rx/A (+)
Green
Rx/B (-)
Three examples of various connection situations are provided in the
).
3. If necessary, use 22 AWG (.33 mm
2
) twisted-pair wire for extended
runs of wire.
4. Solder and cover all bare-wire connections.
Summary of Contents for GHP 20
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