User manual HUMMINBIRD LCR 8000

[. . . ] TRANSDUCER MOUNTING PROCEDURE Humminbird's high-speed transducer is supplied with your LCR. This transducer has been designed to give good high speed readings on most all boat designs, including aluminum. Please carefully consider the following before installing your transducer. TRANSDUCER MOUNTING OPTIONS A. Transom Mount- The Humminbird high speed transducer allows the transducer element to be mounted below the bottom of the boat hull keeping the transducer out of turbulent water and insuring good high speed operation. [. . . ] You should select the fastest display speed for high speed operation, but use a slower display speed for idle or trolling speed. Sensitivity: Automatic Mode: - Each time the unit is turned on, the automatic feature is on. In the automatic mode the sensitivity is adjusted automatically to give a good return and the correct depth range is selected. The sensitivity bar at the bottom of the screen will increase or decrease automatically indicating the amount of sensitivity being used. In deeper water or soft bottom conditions this bar will increase indicating more senistivity. In shallow water or when a hard bottom is being read, the sensitivity needed to achieve a good return will be less. Also in the automatic mode, the unit will black out the display beneath the bottom line. Manual Mode: - There are two ways of putting the LCR in the manual mode; (1) Depress the Auto On/Off button or (2) Depress the Manual Set button and then either the decrease or _· increase button. When the * or · or button is pressed once, the sensitivity setting at the bottom of the screen will change by one division. If the · or A button is held down the setting will move up or down as long as the button is held down. When the maximum or minimum setting is achieved, the unit will make a "Chirping" sound indicating a limit has been reached. Also, the word "max" will appear when the maximum sensitivity setting is reached. In the manual mode everything below the bottom is no longer blacked out, therefore a second return or double echo can be displayed if desired. Also, the hardness of the bottom can sometimes be determined by the thickness of the bottom return. For example, a hard or rock bottom will give a wider bottom return as compared to a soft or muddy bottom. Manual Mode In manual mode everything below the bottom is not blacked out, so that the second bottom echo can be seen. Note: You will find the manual sensitivity control most useful when looking for smaller targets such as smaller fish. In the automatic mode the computer might not be using enough sensitivity to show smaller targets. Therefore, you might want to use the automatic mode while running and then use the manual mode for charting and finding fish. You should also note that it is possible to have the sensitivity set too high such that reflection off of suspended matter or air bubbles will begin to black out the display. In the manual mode the depth scale does not change automatically (See Paragraph 4 under Manual Mode). To once again activate the automatic mode, depress the Sensitivity Auto "On/Off" button. If you get confused while in the manual mode, for example if you don't know where the bottom is, then press the Auto On/Off button to turn on the Automatic Mode. [. . . ] These pre-programmed screens will aid in your learning and hopefully let you have some fun, too. Press the Mode Select Button to change from the digital depth display (in the lower right corner of the screen) to the Memory Display (See Figure 21). If the screen number is not 1, press the Memory Select Button (or hold it down) until 1 is displayed. Step 2 To recall screen number 1 simply press the Memory Recall Button. [. . . ]