Lowrance electronic LCX-16CI - Manual (Page 8)

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To prevent electrical interference, route the power, transducer, and GPS
cables away from other wiring, especially the engine’s wiring harness.
VHF radio antenna cables radiate noise when transmitting, so be certain
to keep the unit’s wires away from it, also.
NMEA/DGPS
NMEA is a standard communications format for marine electronic equip-
ment. For example, an autopilot can connect to the NMEA interface on
the LCX-16CI and receive positioning information.
DGPS is an acronym for Differential Global Positioning System. The most
popular DGPS system relies on a grid of ground-based transmitters that
send correction signals to DGPS receivers. These in turn, connect to the
GPS receiver (such as the LCX-16CI with the LGC-12S GPS module).
This gives more accurate positions than is otherwise possible.
NMEA/DGPS Wiring
The LCX-16CI has two NMEA 0183 version 2.0 ports. Com port one can
be used for either NMEA or DGPS, Com port two is for NMEA output only.
Comunications port one uses the yellow wire wire for transmit, the orange
wire for receive. Comunications port two uses the blue wire for transmit.
Both ports use the shield wire for signal ground.
See the diagrams below for general wiring connections. Read your other
product’s owner’s manual for more wiring information.
COM-1
LCX-16CI
TO BEACON
RECEIVER
YELLOW (TRANSMIT)
ORANGE (RECEIVE)
SHIELD (GROUND)
RECEIVE
TRANSMIT
GROUND
COM-2
LCX-16CI
TO OTHER
DEVICE
BLUE(TRANSMIT)
SHIELD (GROUND)
RECEIVE
GROUND