3 fish alarm – Furuno NAVNET GD-1920C User Manual
Page 137
4. VIDEO SOUNDER OPERATION
4-16
4.11.2 Bottom alarm
The bottom alarm sounds when the bottom echo is within the alarm range set. To activate
the bottom alarm, the depth must be displayed. Note that the bottom alarm is turned on or
off reciprocally with the bottom alarm on the plotter alarm menu.
1. Press the
ALARM key to show the ALARM menu.
2. Use the
Trackball
to select BOTTOM ALARM.
3. Press the EDIT soft key to show the bottom alarm window.
BOTTOM ALARM
▲
ON
0000.0-0000.0 ft
OFF
▼
Bottom alarm window
4. Use the
Trackball to select ON or OFF as appropriate. For ON, enter alarm range with
the
Trackball and numeric keys: Adjust the Trackball to select digit; hit appropriate
numeric key to enter value.
5. Press the ENTER soft key or push the
ENTER knob to register setting.
6. Press the
ALARM key to close the menu.
4.11.3 Fish alarm
The fish alarm sounds when a fish echo is within the preset alarm range. Note that the
sensitivity of the fish alarm can be set on the SOUNDER SYSTEM SETUP menu.
1. Press the
ALARM key to show the ALARM menu.
2. Use the
Trackball
to select FISH ALARM.
3. Press the EDIT soft key to show the fish alarm window.
FISH ALARM
▲
ON
0000.0-0000.0 ft
OFF
▼
Fish alarm window
4. Use the
Trackball to select ON or OFF as appropriate. For ON, use the Trackball and
numeric keys to enter range: Adjust the
Trackball to select digit; hit the appropriate
numeric key to enter value.
5. Press the ENTER soft key or push the
ENTER knob to register setting.
6. Press the
ALARM key to close the menu.