Furuno NAVNET GD-1920C - Manual (Page 138)

4. VIDEO SOUNDER OPERATION
4-17
4.11.4 Fish alarm (B/L)
The bottom-lock fish alarm sounds when a fish echo is within a predetermined distance
from the bottom. 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 (B/L).
3. Press the EDIT soft key to show the fish alarm (B/L) window.
FISH ALARM (B/L)
▲
ON
0000.0-0000.0 ft
OFF
▼
Fish alarm (B/L) 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 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.
4.11.5 Water temperature alarm
There are two types of water temperature alarms: WITHIN RANGE and OUT OF RANGE.
The WITHIN RANGE alarm sounds when the water temperature is within the range set, and
the OUT OF RANGE alarm sounds when the water temperature is higher or lower than the
range set. Note that the water temperature alarm is turned on or off reciprocally with the
water temperature alarm on the plotter menu.
1. Press the
ALARM key to show the ALARM menu.
2. Use the Trackball to select TEMPERATURE ALARM.
3. Press the EDIT soft key to show the temperature alarm window.
TEMPERATURE ALARM
▲
WITHIN RANGE
+000.0 - +000.0
°
F
OUT OF RANGE
+000.0 - +000.0
°
F
OFF
▼
Water temperature alarm window
4. Use the Trackball to select WITHIN RANGE, OUT OF RANGE or OFF as numeric key
to enter alarm range: Adjust the Trackball to select digit; hit appropriate numeric key to
enter value. To switch between plus and minus and vice versa use the +< - ->- soft key.
5. Press the ENTER soft key or push the ENTER knob to register setting.
6. Press the ALARM key to close the menu.