Eagle Electronics SeaFinder 480DF - Manual (Page 54)

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Adjust Zone Alarm selection box, with Upper selected.
3. To set the upper boundary for the Zone Alarm, use
← or→ to select
U
PPER
, then press
↑ or ↓ to move the top of the bar to the desired depth.
4. To set the lower boundary for the Zone Alarm, use
← or→ to select
L
OWER
, then press
↑ or ↓ to move the bottom of the bar to the desired
depth.
5. Press EXIT |
← to
Z ONE A LARM E NABLED
| ENT | EXIT . Now, any echo —
fish, bottom, structure — within the zone alarm's depth range will
trigger the zone alarm.
6. To turn off the alarm, press A
LARM
|
↓ to
Z
ONE
A
LARM
E NABLED
| ENT | EXIT .
To switch to a different depth setting, open the Sonar Alarms menu and
repeat the instructions in steps 3 and 4 above.
Fish Alarm
Use the fish alarm for a distinctive audible alarm when fish or other
suspended objects are detected by the Fish I.D.
 feature (Fish I.D.
must be turned on for the Fish Alarm to work). A different tone sounds
for each fish symbol size shown on the display.
To turn the fish alarm on:
1. Press A LARM
.
2. Press
↓ to
F ISH A LARM
| ENT | EXIT .
3. To turn off the alarm, press A LARM
|
↓ to
F ISH A LARM
| ENT | EXIT .
Brightness
See the entry in this section for Screen Contrast and Brightness.