X515C DF & X510C Manual - Lowrance

Sonar Alarms menu (left) with Adjust Zone command selected.
Adjust Zone Alarm selection box (right) with Upper selected.
3. To set the upper boundary for the Zone Alarm, use ← or→ to select
UPPER, 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
LOWER, then press ↑ or ↓ to move the bottom of the bar to the desired
depth.
5. Press EXIT|← to ZONE ALARM ENABLED|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 the ALARM key on the front of the unit or
press MENU|MENU and use ↑ or ↓ to select Sonar Alarms, then press
ENT. Press ↓ to ZONE ALARM ENABLED|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.
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