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down arrow key once. This changes
the "1" at the end of the number to a
"0". The depth now shows 10 feet.
Press the ENT key to accept this set-
ting. The Optima returns to the alarms
menu, showing a shallow depth of 10
feet. Now you can activate the alarm
by highlighting the "Shallow Alm" label
and pressing the right arrow key.
With the shallow alarm set at ten feet,
anytime the digital display goes below
ten feet, the shallow alarm sounds.
Set the deep alarm in the same manner. If the bottom depth reading goes
below the deep alarm setting, the deep alarm will sound.
ZONE ALARM
The zone alarm is triggered when any
echo passes inside the zone alarm
bar, shown on the right side of the
screen. To turn the zone alarm on,
highlight the "Zone Alarm" label on the
alarms menu, then press the right ar-
row key. To adjust the zone alarm,
highlight the "Zone Adjust" label, then
press the right arrow key. A screen
similar to the one at right appears.
To adjust the top of the zone bar higher
or lower, press the up or down arrow
keys while the up and down arrows are
surrounding the "Upper Zone" on the
screen as shown above. To adjust the bottom of the zone bar, first press
the right arrow key to move the arrows to the "Lower Zone" on the screen,
then use the up or down arrow keys.
When the zone alarm is set, press the EXIT key to erase the menus.
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. A different tone
sounds for each fish symbol size shown on the display. To turn the fish
