If a setting limit is reached, the ARROW symbol attached to the menu appears to be hollow 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 and the new sensitivity setting begins to affect
new sonar information as it flows onscreen. If additional adjustment is needed, the UP ARROW
or DOWN ARROW can be pressed without having to first press MENU.
Depth Range
The Depth Range function controls the vertical distance displayed on the graphic area of the
display. There are 9 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', 0120', 0-180', 0-240', 0-360', 0-480', and 0-
600' are available. In the metric version, ranges of 0-5, 0-10, 0-20, 0-40, 0-60, 0-80, 0-110, 0-150,
and 0-185 meters 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 100SX 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'
(6m) of water, the 0-30' (0103) range would be selected). This
provides the best display resolution and therefore the best target
separation possible.
The Depth Range can be adjusted manually. Press MENU
repeatedly until the Depth Range menu is visible. The two
options available are "Auto" (Factory Setting) and "Manual".
Pressing the DOWN ARROW enables "Manual" depth range
control and an additional menu will appear which allows the user
to adjust the current depth range setting. If no further button is
pressed, the current depth range is selected as the desired
range and the unit returns to normal operation.
Using "Manual" Depth Range control, the user can view sonar
information from the area near the surface in great detail. If a
depth range other than the current range is desired, pressing
the DOWN ARROW to highlight "Adjust" will allow selection of
one of the 9 available ranges. Simply press and hold the UP
or DOWN ARROW button to scan through the available
options. If a setting limit is reached, the audible "error" or
multiple chirps will be heard and no further adjustment is
allowed.
When "Manual" range is used, the unit no longer adjusts the
Depth Range to the most appropriate range for bottom
display. Often, the bottom may not be visible on-screen. The
digital depth readout always determines the depth of the
bottom, even if it is not visible on-screen.
When a Depth Range is selected manually and the Depth
Range menu is still active (most recently used), further
adjustment of the depth range can be achieved by simply pressing the appropriate UP or DOWN
ARROW button. The button press will bring the Depth Range menu on-screen and allows
immediate adjustment of the range.
