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Item Garmin Wire
Function
Rx/A (+)
Rx/B (-)
This diagram is an example of a connection to a standard NMEA
0183 device with one Tx wire.
Item Description
Marine instrument with a NMEA data cable (not included)
NMEA 2000 network (must connect to the same ground as the
NMEA data cable)
12 Vdc power source
NMEA 0183-compliant device
Item Garmin Wire
Function
N/A
N/A
Rx/B (-)
Rx/A (+)
This diagram is an example of a connection to a Garmin HVS
GPS antenna.
Item Description
Marine instrument with a NMEA data cable (not included)
12 Vdc power source
Garmin HVS GPS antenna
Item Marine Instrument Wire Color
N/A
Black
Yellow
Blue
White
Brown
Green
Specifications
Specification
Dimensions without sun cover
(H×W×D)
Dimensions with sun cover
(H×W×D)
Weight without sun cover
Weight with sun cover
Temperature range
Compass-safe distance
GMI 20 Installation Instructions
Garmin Wire
NMEA 0183 Device
Color
Wire Function
Brown
Tx/A (+)
Green
Tx/B (-)
Garmin Wire
NMEA 0183 Device
Color
Wire Function
N/A
Power
N/A
Power ground
Green
Data ground
Brown
Tx
Antenna Wire Color
Red
Black
Orange
White
White/orange
Gray
White/red
Measurement
110 x 115 x 30 mm (4.33 x 4.53 x
1.18 in.)
115 x 120 x 35.5 mm (4.53 x 4.72 x
1.40 in.)
247 g (8.71 oz.)
283 g (9.98 oz.)
From 5° to 158°F (from -15° to 70°C)
209 mm (8.25 in.)
Specification
Material
Brightness
Power usage
Unit max. voltage
NMEA 2000 input voltage
NMEA 2000 load equivalency
number (LEN)
NMEA 2000 PGN Information
Type
PGN
Transmit and receive 059392 ISO acknowledgment
059904 ISO request
060928 ISO address claim
126208 NMEA: Command, request, and
126464 Transmit PGN list group function
126996 Product information
Receive
126992 System time
127245 Rudder
127250 Vessel heading
127488 Engine parameters: Rapid update
127489 Engine parameters: Dynamic
127493 Transmission parameters: Dynamic
127498 Engine parameters: Static
127505 Fluid level
127508 Battery status
128259 Speed: Water referenced
128267 Water depth
129025 Position: Rapid update
129026 COG and SOG: Rapid update
129029 GNSS position data
129044 Datum
129283 Cross track error
129284 Navigation data
129285 Navigation route and waypoint info
129539 GNSS dilution of precision (DOP)
129540 GNSS satellites in view
130306 Wind data
130310 Environmental parameters
130311 Environmental parameters
130312 Temperature
130313 Humidity
130314 Actual pressure
130576 Small craft status
NMEA 0183 Information
When connected to an optional NMEA 0183-compatible device,
the instrument can receive these NMEA 0183 sentences.
Sentence
Description
AAN
Auto anchor data
BOD
Bearing (origin to destination)
BWC
Bearing and distance to waypoint
DBT
Depth below transducer
DTM
Datum being used
DPT
Depth
GGA
Global positioning system fix data
Measurement
Case: fully-gasketed polycarbonate,
waterproof to IEC 60529 IPX7
standards
Lens: glass with an anti-glare finish
2
1200 cd/m
(NIT)
3 W max
32 Vdc
9 to 16 Vdc
7 (350 mA at 9 Vdc)
Description
acknowledge group function
3
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