Eagle Electronics FISHMARK 640C - Manual (Page 63)

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Sonar Alarms menu (left) with Adjust Zone command selected.
Adjust Zone Alarm selection box (right) with Upper Limit selected.
4. Press EXIT |
← to Zone Alarm
E
NABLED
| ENT | EXIT . Now, any echo —
fish, bottom, structure — within the zone alarm's depth range will trig-
ger the zone alarm.
5. To turn the alarm off press ALARM |
↓ to Zone Alarm
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 to receive an audible alarm when fish or other sus-
pended 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.