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.