Garmin GPSMAP 902 series Manuel d'instructions d'installation - Page 5
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Item
Description
Power source
Power/NMEA 0183 cable
NMEA 0183 device
Item Garmin Wire
Garmin Wire
Function
Color
Power
Red
Power ground
Black
TXA
Blue
TXB
Gray
NMEA 0183 Device Connected with a Single Transmit Wire
In this example, the NMEA 0183 device is sending data to the
chartplotter.
Item
Description
Power source
Power/NMEA 0183 cable
NMEA 0183 device
Item Garmin Wire
Garmin Wire
Function
Color
Power
Red
Power ground
Black
RXB
Violet
RXA
Brown
NMEA 0183 and Power Cable Pinout
Pin Number
Wire Function
NMEA 0183 Tx/A (Out
+)
NMEA 0183 Rx/A (In
+)
NMEA 0183 Tx/B (Out
-)
NMEA 0183 Rx/B (In
-)
Pin Number
Lamp and Horn Connections
The device can be used with a lamp, a horn, or both, to sound or
flash an alert when the chartplotter displays a message. This is
optional, and the alarm wire is not necessary for the device to
function normally. When connecting the device to a lamp or
horn, observe these considerations.
• The alarm circuit switches to a low-voltage state when the
NMEA 0183 Device
Wire Function
• The maximum current is 1 A, and a relay is needed to limit
Power
Power ground
• To manually toggle visual and audible alerts, you can install
RXA
Not applicable
Item Description
Item
NMEA 0183 Device
Wire Function
Power
Power ground
Not applicable
Composite Video Considerations
TXA
This chartplotter allows video input from composite video
sources using the port labeled CVBS IN. When connecting
composite video, you should observe these considerations.
• The CVBS IN port uses a BNC connector. You can use a
• Video is shared across the Garmin Marine Network, but it is
Specifications
Device
All models
Wire Color
Blue
Brown
Gray
Violet
Wire Function
Alarm
Accessory on
Ground (shield)
VIN
alarm sounds.
the current from the chartplotter to 1 A.
single-pole, single-throw switches.
Power source
Power cable
Horn
Lamp
Relay (1 A coil current)
Toggle switches to enable and disable lamp or horn alerts
Wire Color
Red
Black
Yellow
BNC to RCA adapter to connect a composite-video source
with RCA connectors to the CVBS IN port.
not shared across the NMEA 2000 network.
Specification
Temperature range
Material
1
Water rating
Input voltage
Fuse
NMEA 2000 LEN
NMEA 2000 draw
Max. waypoints
Wire Color
Yellow
Orange
Black
Red
Wire Function
Power
Ground
Alarm
Measurement
From -15° to 55°C (from 5° to
131°F)
Polycarbonate plastic and die-
cast aluminum
IEC 60529 IPX7
From 10 to 32 Vdc
6 A, 125 V fast-acting
2
75 mA max.
5,000
5