Garmin GPS 24XD NMEA 2000, Руководство по установке

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the sky in all directions, before you proceed to Auto Heading
Alignment.
5
Select Auto Heading Alignment .
6
Select Begin .
7 Follow the on-screen instructions until the magnetic heading
alignment is complete.
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.
Perform a factory reset ( Antenna Configuration , page 5 ).
The device still outputs GPS Course over Ground.
Adjusting the Fine Heading Alignment
You can adjust the Fine Heading Alignment in conjunction with
Auto Heading Alignment to fine-tune the heading output
(optional).
1
From the antenna calibration screen, select Fine Heading
Alignment .
2 Using a landmark or a known good compass, determine the
heading of your boat.
3
Adjust the heading until it matches your measurement.
4
Select Done .
Performing Basic Calibration
If you connect the antenna to a NMEA 2000 network without a
compatible Garmin chartplotter or with a third-party device, you
must perform basic calibration instead of menu-based
calibration.
Before you can perform basic calibration, you must be able to
view heading data from the NMEA 2000 network on a connected
device. To perform basic calibration, you must remove from the
network all sources of heading data other than the antenna.
When performing basic calibration, you first calibrate the
compass and then align the heading in one continuous
procedure.
NOTE: The boat must be able to reach a cruising speed of at
least 6.4 km/h (4 mph) to perform the heading alignment.
1
Drive the boat to a location with calm, open water.
2
Set the display to view heading data from the connected
antenna.
NOTE: You must not use GPS Course Over Ground (COG)
to perform basic calibration.
3
Disconnect the antenna from the NMEA 2000 network or turn
off the power to the NMEA 2000 network.
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 .
NOTE: If you are performing the first basic calibration after a
factory reset, the heading is blank.
6 Within three minutes, complete two full, slow, tight circles ,
taking care to keep the boat as steady and level as possible.
The boat should not list during calibration.
When the antenna is prepared to calibrate the compass, the
heading data disappears from the display
You may receive an error message that the heading was lost.
You can ignore this message.
7 Continue turning in the same direction at the same speed
for approximately 1
1
/
2
rotations until the heading data
appears .
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.
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.
4