Garmin 640 Mode D'Emploi
GPSMAP 640 Owner’s Manual
Marine Mode: Advanced Configuration
Turn the following alarms on or off:
Marine
Tornado
Severe Storm
Flood
Flash Flood
Tornado
Severe Storm
Flood
Flash Flood
Configuring My Boat
From the Home screen, touch
Configure
>
My Boat
.
auto guidance—select the Auto Guidance parameters for your
boat.
Safe Depth—set the minimum depth (using chart depth
datum) to allow when calculating an auto-guidance path. A safe
depth of less than one meter is not allowed when using Auto
Guidance.
Safe Height—set the minimum height (using chart height
Safe Height—set the minimum height (using chart height
datum) of a bridge that your boat can safely travel under.
Keel offset—offset the surface reading for the depth of a keel,
making it possible to measure depth from the bottom of the keel
instead of from the transducer location. Enter a positive number to
offset for a keel. Enter a negative number to compensate for a large
vessel that may draw several feet of water.
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To adjust the Keel Offset:
1. From the Home screen, touch
Configure
>
My Boat
>
Keel
Offset
.
2. Use the on-screen keyboard to specify the offset.
If you are measuring down to the keel (Intelliducer installed
at the water line), enter a (+) positive number.
If you are measuring up to the water line (Intelliducer
If you are measuring up to the water line (Intelliducer
installed on the keel), enter a (-) negative number.
3. Touch
Done
to accept the number.
turn transition Distance—set how far before a turn in a route
that you transition to the next leg.
Configuring Other Vessels
From the Home screen, touch
Configure
>
other Vessels
.
Note: To configure AIS or DSC information for other boats, your
unit must be connected to an external AIS or DSC device.
aiS—turn AIS on or off. AIS alerts you to area traffic by providing
boat IDs, position, course, and speed for boats that are within range
and equipped with a transponder.
DSC—turn DSC on or off.
DSC—turn DSC on or off.
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