Insignia 350TX - Manual (Page 19)

17
USING THE 350TX
MENU FUNCTIONS
which the Zoom range is constantly adjusted to
show the bottom, or manually, in which the user
controls the location of the Zoom range.
Automatic Zoom is especially helpful when looking
for structure or bottom detail. The Automatic
Zoom keeps the bottom in view even in quickly
changing terrain, but is most useful in flatter areas
without considerable depth variation. Manual
Zoom provides detailed information of any area
from the surface to the bottom. In manual Zoom, the Zoom range does not
move as the terrain changes.
When the range is shown in the menu, the upper number represents the top of
the current Zoom range. The lower number represents the bottom of the Zoom
range. Use the UP and DOWN ARROW buttons to move this range. The upper
number can never be less than 0 (the surface of the water), and the lower
number can never be greater than the active depth range. The difference
between the two numbers (the Zoom range) is preset and determined by the
active depth range.
Once manual Zoom is selected, the display appears the same as in Auto Zoom,
but the zoom range does not change automatically.
To disable Zoom, press the MENU button until the Zoom menu is on-screen. Use
the UP ARROW to highlight Off, and let the menu time out.
When the unit is powered off, the Zoom menu returns to Zoom Off.
Depth Alarm. The 350TX contains an aud-
ible alarm to warn you of shallow water
depths. The alarm is adjustable in tenths
(
¹⁄₁₀ m) from 1 to 9.9 metres and in full
metres from 10m to 30m (99'). Imperial
measures are set to the whole foot from
3' to 99'. When the alarm is enabled, an
audible alarm sounds if the water beneath
the boat is equal to or less than the selected
alarm depth. The alarm sounds continuously
for about five seconds, and then
intermittently to remind you that you are still
in shallow water.