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GPSMAP
®
6000/7000 Series Owner’s Manual 107
Sonar
• For the GPSMAP 7000 series, use the on-screen keyboard.
3. Select .
Setting the Fish Alarm
: This feature is available only on the GSD 22.
You can set an alarm to sound when the chartplotter detects a suspended target of the specied size.
1. From the Home screen, select  >  > > .
2. Complete an action:
• Select to sound an alarm for all sh sizes.
• Select to sound an alarm for medium and large sh only.
• Select to sound an alarm for large sh only.
Setting the Contour Fish Alarm
: This feature is available only on the GSD 24 and GSD 26.
You can set an alarm to sound when the chartplotter detects a suspended target within the specied depth range
and the specied color range.
1. From the Home screen, select  >  > >  > .
2. Select .
3. Enter a distance from the top to show an alarm for targets near the surface:
• For the GPSMAP 6000 series, use the  or .
• For the GPSMAP 7000 series, use the on-screen keyboard.
4. Select .
5. Select .
6. Enter a distance to the bottom to sound an alarm for targets near the bottom of the water:
• For the GPSMAP 6000 series, use the  or .
• For the GPSMAP 7000 series, use the on-screen keyboard.
7. Select .
8. Select .
9. Select a color, and select .
Setting the Bottom Fish Alarm
: This feature is available only on the GSD 24 and GSD 26.
You can set an alarm to sound when the chartplotter detects a suspended target within the specied range from
the bottom and the specied color range.
1. From the Home screen, select  >  > >  > .
2. Select .
3. Enter a distance to the bottom to sound an alarm for targets near the bottom of the water:
• For the GPSMAP 6000 series, use the  or .
• For the GPSMAP 7000 series, use the on-screen keyboard.
4. Select .
5. Select .
6. Select a color, and select .
Transducer Conguration
Setting the Keel Offset
The keel offset compensates for 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. You can enter a negative number to compensate for a large vessel that may draw several feet of water.