Humminbird 425 SX - Manual (Page 24)

Contrast. The Contrast function allows the user to
control the level of contrast of the LCD display. The
425SX 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.
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USING THE 425SX
MENU FUNCTIONS