Garmin CR 1522 Owner's Manual page 24

Single-Ended NMEA 0183 Device Connections
B
Item
Power source
A
Power / NMEA 0183 cable
B
NMEA 0183 device
C
Item
Red
Black
Violet
Brown
Blue
Gray
• If the NMEA 0183 device has only one input (receive, RX) wire (no A, B, +, or -), you
must leave the TXB wire unconnected.
• If the NMEA 0183 device has only one output (transmit, TX) wire (no A, B, +, or -), you
must connect the RXB wire to ground.
NMEA 0183 Device Connected with a Single Receive Wire
In this example, the NMEA 0183 device is receiving data from the chartplotter.
B
Item
DC Power supply / battery
A
Power / NMEA 0183 cable
B
NMEA 0183 device
C
Item
Red
Black
Blue
Gray
22
Garmin Wire Color
Garmin Wire Color
A
Description
Garmin Wire Function
Power
Power ground
RXB
RXA
TXA
TXB
A
Description
Garmin Wire Function
Power supply +
Power supply - / ground Power supply - / ground
TXA
TXB
C
NMEA 0183 Device
Wire Function
Power
Power ground
N/A
TX
RX
N/A
C
NMEA 0183 Device
Wire Function
Power supply +
RXA
N/A
CHAPTER 1 INTRODUCTION