User manual HUMMINBIRD LCR 4000

[. . . ] TABLE OF CONTENTS INSTALLATION PREPARATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Parts Supplied. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Manual Mode- There are two ways of putting the LCR4000 in the manual mode: (1) depress the Auto "On/Off" button or (2) depress either sensitivity decrease (-) or increase (+) button. You will notice that the word Auto in the upper right hand corner of the display has gone off. The operator can control the amount of sensitivity by depressing the (+) or (-) button. When the (+) or (-) button is pressed once, the sensitivity setting at the top of the screen will change by one division. If the (+) or (-) 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. 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 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. (See Figure 15). USING THE LCR 4000 OPERATIONAL INSTRUCTIONS Note: You will find the manual sensitivity control more 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. At higher sensitivity more targets will be seen. 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's 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 and the digital bottom depth is not displayed. To once again activate the automatic mode, depress the Sensitivity Auto "On/Off" switch. Display: Stop/Resume: Anytime during the operation of the LCR, the operator may "freeze" the display by simply pushing the display "Stop/Resume" button. This feature will aid in the learning and interpretation of the signal on your LCR display by giving you time to study the display. The "Stop/Resume" function will not change any original settings when once again activated. The sensitivity and display speed cannot be changed while the display is stopped. If they are pressed, a chirping sound will indicate that these functions cannot be changed while the display is stopped. All other functions, such as Zoom, Depth Scales, Reverse and Forward, are active with the display stopped. [. . . ] Accessories not manufactured under the Humminbird trade name are not covered by our warranty. The customer is responsible for shipping charges to Humminbird. Humminbird will provide ground UPS or Parcel Post shipping back to the customer free of charge. This warranty applies to the original purchaser only. [. . . ]