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work well if you have a cab-over design pickup truck camper or motor
home. If dashboard reception is poor, simply relocate the antenna mod-
ule elsewhere on the vehicle for a clearer view of the sky.
NMEA Cable Connections
NMEA is a standard communications format for marine electronic
equipment. For example, an autopilot can connect to the NMEA inter-
face on the SeaCharter 640cDF and receive positioning information.
The SeaCharter is capable of exchanging information with any device
that transmits or receives NMEA 0183 data, however, a communica-
tions cable is not available for the unit at this time. If you need to cre-
ate a NMEA 0183 connection, consult customer service. Service contact
information is located in the back of this manual.
NMEA Wiring
To exchange NMEA data, the unit has one NMEA 0183 version 2.0
communication port. Com port one (Com-1) can be used to receive
NMEA format GPS data. The com port can also transmit NMEA format
GPS data to another device.
A data cable should contain three wires. Com-1 uses the yellow wire to
transmit, the orange wire to receive and the shield wire for signal
ground.
Com-1 wiring to receive NMEA position information
from some other GPS receiver.
Com-1 wiring to transmit NMEA position information
to another NMEA-compatible device.
Read your other product’s owner’s manual for more wiring information.
Mounting the Unit: Bracket, In-Dash or Portable
You can install the unit on the top of a dash with the supplied gimbal
bracket. It can also be installed in the dash or mounted on a portable
power supply. If you use the supplied bracket, you may be interested in
the optional R-A-M
bracket mounting system. This converts the unit's
Ground
To Other
Device
Orange (Receive) NMEA Transmit
Shield (Ground)
Ground
Com-1 to
unit
To Other
GPS Receiver
Com-1 to
unit
Yellow (Transmit)
NMEA Receive
Shield (Ground)