Garmin GPSMAP 740s - Manual (Page 81)

GPSMAP 700 Series Owner’s Manual 77
Sonar
Adjusting the Range of the Depth Scale
You can adjust the range of the depth scale that appears on the right side of the screen.
1. From the Home screen, select Sonar.
2. Select a sonar view.
3. Select Menu > Range.
4. Complete an action:
• Select Auto to allow the chartplotter to adjust the depth scale automatically.
• Select Up or Down to increase or decrease the range of the depth scale manually.
5. Select Done.
NoTe: From the sonar screen, you can press or to manually adjust the range of the depth
scale.
Sonar Alarms
Setting the Shallow Water and Deep Water Alarms
1. From the Home screen, select Configure > Alarms > Sonar.
2. Select Shallow Water > on to set an alarm to sound when the depth is less than the specified value.
3. Enter the depth that triggers the shallow water alarm.
4. Select Done.
5. Select Deep Water > on to set an alarm to sound when the depth is greater than the specified value.
6. Enter the depth that triggers the deep water alarm.
7. Select Done.
Setting the Water Temperature Alarm
You can set an alarm to sound when the transducer reports a temperature that is 2°F (1.1°C) above or below
the specified temperature.
1. From the Home screen, select Configure > Alarms > Sonar > Water Temp > on.
2. Enter a water temperature.
3. Select Done.
Setting the Fish Alarm
You can set an alarm to sound when the chartplotter detects a suspended target of the specified symbols.
1. From the Home screen, select Configure > Alarms > Sonar > Fish.
2. Complete an action:
• Select to sound an alarm for all fish sizes.
• Select to sound an alarm for medium and large fish only.
• Select to sound an alarm for large fish only.