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
alarm sounds.
• The maximum current is 100 mA, and a relay is needed to
limit the current from the chartplotter to 100 mA.
• To manually toggle visual and audible alerts, you can install
single-pole, single-throw switches.
Item Description
À
Power source
Á
Power cable
Â
Horn
Ã
Lamp
Ä
Relay (100 mA coil current)
Å
Toggle switches to enable and disable lamp or horn alerts
Item
Wire Color
Wire Function
Ê
Red
Power
Ë
Black
Ground
Ì
Yellow
Alarm
HDMI Out Video Considerations
NOTICE
To prevent corrosion due to moisture, you must use Garmin
GPSMAP accessory cables when connecting the chartplotter to
the video display. Using different cables voids your warranty.
Through the HDMI OUT port, you can duplicate the chartplotter
screen on another device, such as a television or monitor.
The Garmin GPSMAP HDMI accessory cable is 4.5 m (15 ft.)
long. If you need a longer cable, you should use an active HDMI
cable only. You need an HDMI coupler to connect the two HDMI
cables.
You must make all cable connections in a dry environment.
Item Description
À
GPSMAP 1222/1242 Touch chartplotter
Á
GPSMAP HDMI cable (HDMI OUT)
Â
Display with an HDMI In port, such as a computer or television
Ã
Dry environment, protected from moisture
Composite Video Considerations
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
BNC to RCA adapter to connect a composite-video source
with RCA connectors to the CVBS IN port.
• Video is shared across the Garmin Marine Network, but it is
not shared across the NMEA 2000 network.
J1939 Engine Network Connection Considerations
NOTICE
You must use a Garmin GPSMAP J1939 accessory cable when
connecting the chartplotter to the J1939 engine network to
prevent corrosion due to moisture. Using a different cable voids
your warranty.
If you have an existing engine network on your boat, it should
already be connected to power. Do not add any additional power
supply.
This chartplotter can connect to an engine network on your boat
to read data from compatible devices such as certain engines.
The engine network follows a standard and uses proprietary
messages.
You should connect only one chartplotter to one engine network.
Connecting more than one chartplotter to one engine network
may result in unexpected behavior.
The port labeled J1939 is used to connect the device to the
existing engine network. You must route the cable within 6 m
(20 ft.) of the engine network backbone.
The Garmin GPSMAP J1939 accessory cable requires
connection to a power source and proper termination. For more
information on connecting to your engine network, see the
manufacturer's engine documentation.
Pin
Wire Color
Description
À
Bare
Shield
Á
Red
Power, positive
Â
Black
Power, negative
Ã
White
CAN High
Ä
Blue
CAN Low
Specifications
Specifications
Specification
Measurement
Dimensions (W × H × D)
330 × 226 × 79 mm (13 × 8.9 ×
3.1 in.)
Clearance to nearest obstruction 95 mm (3
3
/
4
in.)
Weight
2.72 kg (6 lbs)
Display size (W × H)
262 × 163 mm (10.3 × 6.4 in.)
Display type
WXGA display
Display resolution
1280 x 800 pixels
Material
Die-cast aluminum and
polycarbonate plastic
Water rating*
IEC 60529 IPX7
Temperature range
From -15° to 55°C (from 5° to 131°F)
Input voltage
From 10 to 32 Vdc
Typical current draw at 10 Vdc
3.5 A
Max. power draw at 10 Vdc
36 W
Max. current draw at 12 Vdc
3.0 A
Fuse
6 A, 125 V fast-acting
NMEA 2000 LEN
2
NMEA 2000 Draw
75 mA max.
Compass-safe distance
65 cm (25.6 in.)
5
Summary of Contents for GPSMAP 1222 TOUCH
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