When the heading data appears, the compass has been
calibrated successfully, and you can align the heading
(optional).
8
Select an option.
• If you want to align the heading to match the front of the
boat, proceed to the next step.
• If you do not want to align the heading, stop turning and
wait, keeping the boat stationary. Over the next two
minutes the heading data should disappear and then
reappear. When the heading data reappears, the compass
should be calibrated and no heading offset should be
applied.
NOTE:
If an unwanted heading offset is applied, repeat
the calibration procedure.
9
Continue turning in the same direction at the same speed for
approximately ten seconds, until the heading data disappears
from the display .
10
When it is safe, straighten the boat and drive in a straight line
at cruising speed (must be at least 6.4 km/h (4 mph)) until
the heading data appears .
When the heading appears, the compass has been
calibrated, and the heading has been aligned on the antenna.
11
Test the results of the calibration, and repeat this procedure if
necessary.
Disabling the Magnetic Heading Data
If you cannot mount the antenna in an ideal location for
magnetic heading and GPS performance, you can disable the
magnetic heading data.
1
Drive the boat to a location with calm, open water.
2
Set the display to view heading data from the antenna.
3
Disconnect power from the antenna.
4
Wait while the boat becomes level and stationary.
5
Turn on power to the antenna, and wait until the heading data
appears on the display .
6
Within three minutes, complete two full, slow, tight circles ,
taking care to keep the boat as steady and level as possible.
Heading data disappears to indicate that the antenna has
detected the start of the procedure .
You may receive an error message that the heading was lost.
You can ignore this message.
7
Bring the boat to a complete stop , and remain stationary
for two minutes.
After two minutes, the heading data reappears with a fixed
value of 123 degrees to indicate heading will be disabled
on the next power cycle.
NOTE:
If the magnetic heading is displayed, the fixed value
is 123 degrees. If the true heading is displayed, the fixed
value may deviate because of corrections from magnetic
variation.
8
Disconnect power from the antenna.
9
Turn on power to the antenna, and verify that heading has
been disabled .
Limiting the Antenna Update Rate
By default, the antenna outputs position data updates 10 times
per second using serial communications rate of 38400 bps. By
installing the included resistor cable, the antenna can be limited
to output position updates once per second using serial
communications rate of 4800 bps.
1
Mount the antenna according to these instructions (
).
2
If necessary, cut the cable to the appropriate length for the
installation.
3
Solder the included Update Rate Select cable to the orange
Accessory on wire.
4
Use the heat-shrink tubing around the soldered connections.
5
If you have not connected the antenna already, connect the
power and data cable (
).
Cleaning the Outer Casing
NOTICE
Avoid chemical cleaners and solvents that can damage plastic
components.
1
Clean the outer casing of the device using a cloth dampened
with a mild detergent solution.
2
Wipe the device dry.
Appendix
Software Update
You must update the Garmin chartplotter software when you
install this device. For instructions on updating the software, see
your chartplotter owner's manual at
Specifications
Dimensions (diameter x
height)
3
19
/
32
× 1
15
/
16
in. (91.6 × 49.5 mm)
Weight
201 g (7.1 oz.)
Cable length
30 ft. (9.14 m)
Temperature range
From -30° to 80°C (from -22° to 176°F)
Case material
Fully gasketed, high-impact plastic alloy
Water rating
IEC 60529 IPX6 and IPX7
1
Compass-safe distance
12.7 mm (0.5 in.)
Power input source
8 to 32 Vdc, unregulated
Max. input current
200 mA @ 12 Vdc
Typical input current
150 mA @ 12 Vdc
Declaration of Conformity
Hereby, Garmin declares that this product is in compliance with
the Directive 2014/53/EU. The full text of the EU declaration of
1
The device withstands incidental exposure to water of up to 1 m for up to 30 min,
and is protected against powerful jets of water. For more information, go to
5
