Using the 450TX

Depth Range

MENU FUNCTIONS

The Depth Range can be adjusted manually. Press MENU repeatedly until the Depth Range menu is visible. Two options are available: Auto and Manual.

The manual setting enables you to adjust the current depth range setting. The unit no longer adjusts the Depth Range to the most appropriate range for bottom display. Often, the

bottom may not be visible on-screen. The digital depth readout always determines the depth of the bottom, even if it is not visible on-screen.

Using manual Depth Range control, you can view sonar information from the area near the surface in great detail.

To return to automatic Depth Range control, press the MENU button until the Depth Range menu appears on-screen and use the UP ARROW to select AUTO.

Zoom. The 450TX uses a greatly enhanced Zoom capability called

“TruZoom” which offers expanded information on a select area of sonar information. Zoom is similar to Depth Range because it controls the range of information displayed on screen. Zoom, however, allows selection of ranges beneath the surface so any area of water between the surface and the bottom can be enlarged to provide more detailed information. By using the full display to show a small area of coverage, the effective display resolution is increased, and the unit’s ability to separate close targets is enhanced.

The Zoom ranges available are dependent on the current depth range. In the 5m (15') depth range, TruZoom displays a range equal to one half the current depth range. In the 10m (30'), 20m (60'), 40m (120'), 60m (180'), 80m (240'), 110m (360'), 150m (480') and 185m (600')