2. Setting Depth Range:
Factory setting: ON (Automatic)
When you turn the Dimension 3 on, it finds t he
bottom, sets the ideal Depth Range, and automatically adjusts
as the depth changes. In this "Auto Depth Range" mode, the
bottom is always displayed for easy-to-understand readings
(and AUTO appears at the right of the screen).
If you prefer, you can turn Auto Depth Range off.
Select DEPTH RANGE, press ON-OFF, and adjust the Depth
Range with the Up or Down arrow key. You can select depth
ranges to 240' when in the 3/4 view, or front view, or to 600' in
the side view. If you have selected the 360', 480', or 600' range
in the side view and switch to the front view or 3/4 view, the
maximum range for those views (240') will be displayed.
In this "Manual Depth Range" mode, the screen
shows a flat grid if the bottom is below the depth you have set.
DEPTH LIMIT MESSAGE
As the bottom depth approaches the depth limit (240') a
depth limit message appears in front and 3/4 views or when a
menu item such as zoom or depth range is adjusted to the
maximum allowed value.
The message stays on the screen for several seconds
and reminds the user that switching to the side view will enable
the unit to chart the bottom to 600'.
3. Enabling Bottom Alarm
Factory setting: OFF
The Bottom Alarm lets you specify the minimum
depth you want to maintain. To use it, select BOTTOM
ALARM, then, press the ON-OFF button to activate the
alarm, and the Up or Down arrow key to adjust the depth at
which the alarm will sound. The Bottom Alarm indicator and
the selected depth are displayed when the function is on.
While Bottom Alarm is on, you'll hear a continuous
chirping sound when the bottom directly under your boat gets
shallower than you defined. This is very handy for alerting
you to shallow water or helping you to maintain position over
structure.
