Furuno COLOR VIDEO PLOTTER 1933C - Manual (Page 165)

4. VIDEO SOUNDER OPERATION
4-21
4.12.2 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.
4.12.3 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.