Humminbird WIDE Paramount 3D - Manual (Page 30)

To adjust Sensitivity, press MENU repeatedly until the Sensitivity menu appears, use the UP
ARROW to increase the sensitivity bias, or the DOWN ARROW to reduce sensitivity bias. By
holding either ARROW button depressed, the unit will sequence through the available settings
until you release the button or the end of the adjustment range is reached. If additional time is
needed to study a menu, press and hold the
MENU button and the menu will remain onscreen indefinitely.
If a setting limit is reached, the ARROW symbol attached to the menu appears to be light gray
which indicates that the related button has no further function. Also, the audible "error" consisting
of multiple chirps will be heard.
After an adjustment is made, the menu disappears, a Bird Note T"^ confirms the adjustment and
the new sensitivity setting begins to affect new sonar information as it flows on-screen. If
additional adjustment is needed, the UP ARROW or DOWN ARROW can be pressed without
having to first press MENU.
The Sensitivity setting is remembered in memory after the unit is powered off.
Depth Range
The Depth Range function controls the vertical distance displayed on
the graphic area of the display. There are 6 different depth ranges
available. The top of the range is always 0, or the surface of the water.
Ranges of 0-15', 0-30', 0-60', 0-120', 0-180', and 0-240' are available.
The range which positions the bottom depiction closest to the bottom of
the graphic area of the display will best utilize the available display
resolution.
The Wide 3D Paramount automatically adjusts the depth
range depending on the depth of the water. The unit
tries to maintain the bottom depiction about 2/3 down the
total range (for example, in 20' of water, the 0-30' range
would be selected). This provides the best display
resolution and therefore the best target separation
possible.