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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
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 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
6 Within three minutes, complete two full, slow, tight circles
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
After two minutes, the heading data reappears with a fixed value of 123 degrees
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 the antenna from the NMEA 2000 network or turn off the power to the NMEA 2000 network.
9 Turn on power to the antenna, and verify that heading has been disabled
Antenna Configuration
Your antenna is pre-configured, but you may customize your antenna configuration as needed. From the NMEA
2000 device list, select the GPS 24xd, and select Review.
Auto Locate: Allows you to clear existing satellite data and force the device to acquire new data.
Factory Defaults: Allows you to reset the antenna settings to the factory default value. You will lose all custom
configuration settings.
.
.
, and remain stationary for two minutes.
at cruising speed (must be at least
, taking care to keep the boat as steady and
to indicate heading will
.
.
.
11
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