Humminbird SINGLEBEAM 405SX Operation Manual page 23

USING THE 405SX
MENU FUNCTIONS
Contrast. The Contrast function allows the user to
control the level of contrast of the LCD display. The
405SX will automatically adjust the display contrast
to compensate for changing ambient temperatures;
however, some situations may occur where manual
adjustment will provide a higher level of contrast.
Eleven contrast settings, +5 to -5, are possible. The
display contrast will change as the adjustment is
made so the optimum level of contrast can easily be
adjusted. Use the ARROW buttons to highlight the
desired selection.
Display Speed. Display Speed controls the rate at
which the graphic information moves across the
display. There are 5 possible speeds; the fastest rate
(5) is the factory setting. If your boat is stationary
or moving very slowly for extended periods, it
may be desirable to update the display at a
slower rate. The closer the update rate matches
boat speed, the more accurate is the graphic
depiction of the terrain beneath your boat.
Use the UP and DOWN ARROWS to select the
desired update rate. (1) is the slowest, (5) is the
fastest. Use the MENU button to advance to the
next menu.
The Display Speed setting is remembered when the unit is powered off.
Battery Alarm. The Battery Alarm Option allows
you to select the voltage level at which the Battery
Alarm activates. At the Battery Alarm menu (under
options), you will note that the default setting is
OFF. Push the DOWN ARROW BUTTON to select
the feature ON. Push the DOWN ARROW BUTTON
again to move into the ADJUST BATTERY ALARM
setting. Using the UP and DOWN ARROW
BUTTONS, select a voltage between 9.0 and 12.0. When the voltage drops
below your selected voltage, an audible alarm will sound, and a battery alarm
icon will be displayed on screen with current voltage level.
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