User manual HUMMINBIRD 150SX

[. . . ] Operations Manual THANK YOU Thank you for choosing Humminbird, America's #1 name in fishfinders. Humminbird has built its reputation by designing and manufacturing top-quality, thoroughly reliable marine equipment. Your Humminbird is designed for trouble-free use in even the harshest marine environment. In the unlikely event that your Humminbird does require repairs, we offer an exclusive Service Guarantee - free of charge during the first year after purchase, and available at a reasonable rate after the one-year period. [. . . ] The 150SX automatically adjusts the depth range depending on the depth of the water. The unit tries to maintain the bottom depiction about ²/ 13 USING THE 150SX MENU FUNCTIONS down the total range (for example, in 20' (6m) of water, the 0-30' (0-10m) range would be selected). This provides the best display resolution and therefore the best target separation possible. The manual setting enables you to adjust the current depth range setting. The unit no longer adjusts the Depth Sensitivity at "0" Range to the most appropriate range for bottom display. 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 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. There are four Zoom ranges available: 7¹/' (2m), 15' (5m), 30' (10m), and 60' High Sensitivity Low Sensitivity 14 USING THE 150SX MENU FUNCTIONS (20m). These ranges are not directly user controlled but are instead dependent on the current depth range. In shallow water, when the 15' (5m) or 30' (10m) range is in use, the Zoom range is 7¹/ (2m). If the 60' (20m) or 120' (40m) range is in use, the Zoom range is 15' (5m), if a 180'-480' (60-150m) depth range is in use, the Zoom range is 30' (10m), and if the 600' (185m) range is in use, the Zoom range is 60' (20m). To enable ZOOM, press MENU repeatedly until the Zoom heading is displayed. When the Zoom menu appears, use the DOWN ARROW to select ON then use the DOWN ARROW to select either AUTO or MANUAL. While using Automatic Zoom, the depth adjustment is controlled automatically, allowing you to view the area immediately above the bottom. This is especially useful if you are looking for structure or minor variations in terrain in areas of relatively flat bottom terrain. If MANUAL is selected, The digital depth readout will continue to track the bottom even when Zoom is enabled. If MANUAL Zoom is selected, use the DOWN ARROW to select ADJUST, then use the UP and DOWN arrows to scroll through the available Zoom Ranges. To disable Zoom, press the MENU button until the Zoom menu is on-screen. [. . . ] Make small adjustments and run the boat at high speeds to determine the effect. This can also be a result of air or turbulence in the transducer location caused by rivets, ribs, etc. Your 150SX has over-voltage protection that turns the unit off when input voltage exceeds 20 VDC. Some outboard motors do not effectively regulate the power output of the engine's alternator and can produce voltage in excess of 20 volts when running at high RPMs. [. . . ]