Garmin GPSMAP 7215 - Manual (Page 65)

GPSMAP ® 6000/7000 Series Owner’s Manual 59
Device Configuration
Configuring Speed Data Sources
You can specify the source of the speed data that is used to calculate true wind speed or fuel economy. Water
speed is the speed reading from a water-speed sensor, and GPS speed is calculated from your GPS position.
1. From the Home screen, select
Configure > Preferences > Navigation > Speed Sources .
2. Complete an action:
• Select Wind , and indicate whether the calculated wind speed data comes from a Water Speed sensor, if
it is based on the GPS Speed, or whether the chartplotter selects a speed data source automatically.
• Select Fuel economy , and indicate whether the speed data that is used to calculate fuel economy
comes from a Water Speed sensor or if it is based on the GPS Speed.
Auto Guidance Line Configurations
You can set the data the chartplotter uses when calculating an Auto Guidance line.
Note: Auto Guidance is available with a preprogrammed BlueChart g2 Vision data card.
Safe Water Depth and Safe Obstacle Height
 CAUTION
The Safe Depth and Safe Height settings influence how the chartplotter calculates an Auto Guidance line. If
an area has an unknown water depth or an unknown obstacle height, the Auto Guidance line is not calculated
in that area. If an area at the beginning or the end of an Auto Guidance line is shallower than the safe water
depth or lower than the safe obstacle height, the Auto Guidance line is not calculated in that area. On the chart,
the course through those areas appears as a gray line. When your boat enters one of those areas, a message
appears.
Setting the Safe Water Depth and the Safe Obstacle Height
1. From the Home screen, select Configure > Preferences > Navigation > Auto Guidance .
2. Select Safe Depth to set the minimum depth (chart depth datum) the chartplotter uses when calculating an
Auto Guidance line.
3. Enter the minimum safe depth:
• For the GPSMAP 6000 series, use the Rocker or the Numeric Keypad.
• For the GPSMAP 7000 series, use the on-screen keyboard.
4. Select Done .
5. Select Safe Height to set the minimum height (chart height datum) of a bridge that your boat can safely
travel under.
6. Enter the minimum safe height:
• For the GPSMAP 6000 series, use the Rocker or the Numeric Keypad.
• For the GPSMAP 7000 series, use the on-screen keyboard.
7. Select Done .