11
USING THE TRACKER UNIT
MENU FUNCTIONS
After an adjustment is made, the menu disappears and the new sensitivity
setting is in affect. If additional time is needed to study a menu, press and
hold the MENU button and the menu will remain on-screen indefinitely. If
you need to make an additional adjustment, press the UP ARROW or
DOWN ARROW button.
Depth Range.
The Depth Range function
controls the vertical distance displayed on
the graphic area of the display. There are
nine 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', 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 that positions the bot-
tom depiction closest to the bottom of the screen, will best utilize the avail-
able display resolution.
The Tracker unit 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' (0-10m) range would be select-
ed). This provides the best display resolu-
tion and therefore the best target separa-
tion possible.
The Depth Range can be adjusted manually. Press MENU repeatedly until
the Depth Range menu is visible. Two options are available: Auto and Man-
ual.
The manual setting enables you to adjust
the current depth range setting. The unit
no longer adjusts the Depth Range to the
most appropriate range for bottom dis-
play. Often, the bottom may not be visible
on-screen. The digital depth readout
