Configuring My Boat - Garmin GPSMAP 4008 Owner's Manual

Off Course—set an alarm to sound when you are off course by a specified distance.
Setting System alarms
To set a system alarm, from the Home screen, select
Clock—set an alarm using the system (GPS) clock. The unit must be on for the clock alarm to work.
Battery—set an alarm to sound when the battery reaches a user-determined low voltage.
GPS Accuracy—set an alarm to sound when the GPS location accuracy falls outside the user-
determined value.
Setting Sonar alarms
To set a sonar alarm, from the Home screen, select
NOtE: You must have an optional sonar module (and a transducer connected to the sounder
module) wired through NMEA 0183 or connected to the Garmin Marine Network to receive sonar
information.
Shallow Water/Deep Water—set an alarm to sound when the depth is less than or greater than the
specified value.
Water Temp—set an alarm to sound when the transducer reports a temperature that is 2° F (1.1° C)
above or below the specified temperature.
Fish—set an alarm to sound when the unit detects a suspended target of the specified symbols.

Configuring My Boat

To configure settings for your boat, from the Home screen, select
Auto Guidance—set the Auto Guidance parameters for your boat:
• Safe Depth—set the minimum depth (refers to the chart depth datum) to allow when
calculating an auto guidance path.
Safe Height—set the minimum height (refers to the 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. This makes it possible to measure
depth from the bottom of your keel instead of from the transducer's location. Enter a positive
number to offset for a keel. You can enter a negative number to compensate for a large vessel that
may draw several feet of water.
To adjust the Keel Offset:
1. From the Home screen, select Configure > My Boat > Keel
2. Use the select screen keyboard to specify the offset.
3. Select Done to accept the number.
NOtE: Select Cancel
GPSMAP 4000/5000 Series Owner's Manual
®
— sounds an alarm for all fish sizes
— sounds an alarm for medium and large fish only
— sounds an alarm for large fish only
to cancel your changes and return to the My Boat screen.
Configure Alarms > System.
>
Configure Alarms > Sonar.
>
Configure
Offset.
c u
onfIGurInG the nIt
> My Boat.
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