Garmin GNX 21 Installation Instructions - Page 3
Browse online or download pdf Installation Instructions for Marine GPS System Garmin GNX 21. Garmin GNX 21 4 pages. Gps navigation
Also for Garmin GNX 21: Owner's Manual (10 pages), Owner's Manual (10 pages), Installation Instructions (4 pages), Installation Instructions (4 pages)
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Wire Color Wire Function
Brown
Rx/A (+)
Green
Rx/B (-)
NMEA 0183 Connection Diagrams
This diagram is an example of a connection to a standard NMEA
0183 device with two Tx wires.
Item Description
Marine instrument with a NMEA data cable (not included)
12 Vdc power source
NMEA 0183-compliant device
Item Garmin Wire
Function
N/A
N/A
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
Garmin Wire
NMEA 0183 Device
Color
Wire Function
N/A
Power
N/A
Data ground
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
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
Material
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
127508 Battery status
128259 Speed: Water referenced
128267 Water depth
129025 Position: Rapid update
129026 COG and SOG: Rapid update
129029 GNSS position data
129283 Cross track error
129284 Navigation data
129285 Navigation route and waypoint info
129539 GNSS dilution of precision (DOP)
130306 Wind data
130310 Environmental parameters
130311 Environmental parameters
130312 Temperature
130313 Humidity
130314 Actual pressure
NMEA 0183 Information
When connected to an optional NMEA 0183 compatible device,
the instrument can receive these NMEA 0183 sentences.
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.)
Case: fully-gasketed polycarbonate,
waterproof to IEC 60529 IPX7
standards
Lens: glass with an anti-glare finish
2.5 W max
32 Vdc
9–16 Vdc
6 (300 mA at 9 Vdc)
Description
acknowledge group function
3