Lowrance electronic X-28 manual Display Contrast, ASP Advanced Signal Processing

switch to metric, the up arrow to switch to feet. Displays show in feet when the unit is first turned on. The menu will clear automatically after a few seconds or you can press the PWR/CLEAR key to clear the screen.

DISPLAY CONTRAST

The unit’s display contrast is adjustable to suit different lighting conditions. This will help you see the screen from different angles, or at various times of the day.

To adjust the contrast, press a menu key until the DARK/LIGHT menu appears. To decrease it, press the down arrow key. Press the up arrow key to increase the contrast. The bar graph in the Dark/Light menu box shows a graph of the contrast. The screen will also show the effects of the change. If you reach the maximum or minimum level, a tone sounds alerting you to the limits. The menu will clear automatically after a few seconds or press the PWR/CLEAR key to clear the screen.

ASP (Advanced Signal Processing)

ASP is a program embedded in the X-28’s computer that is specifically designed to eliminate noise. It continually monitors the signals from the receiver, determines which echoes are noise and rejects them. This allows true target echoes to display on the screen

with a minimum of clutter. This feature is especially useful since it typically lets you operate the boat at all speeds without adjust- ing the sensitivity or other controls. When the X-28 is first turned on, ASP is enabled. To turn ASP off, press a menu key repeatedly until the ASP menu appears. Now press the up arrow to turn it on or the down arrow to turn it off. The menu will clear automatically after a few seconds or you can press the PWR/ CLEAR key to clear the screen.

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