Eagle Electronics 640c Nmea Cable Connections, Mounting the Unit Bracket, In-Dash or Portable

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.

	Orange (Receive)
Com-1 to
unit	Shield (Ground)

NMEA Transmit	To Other
Ground	GPS Receiver

Com-1 wiring to receive NMEA position information

from some other GPS receiver.

	Yellow (Transmit)	NMEA Receive
Com-1 to
unit	Shield (Ground)	Ground

To Other

Device

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

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