User manual FURUNO DC-2000 OPERATORS MANUAL

[. . . ] Continued use of the equipment can cause fire or electrical shock. Do not disassemble or modify the equipment. Fire, electrical shock or serious injury can result. Immediately turn off the power at the switchboard if the equipment is emitting smoke or fire. [. . . ] Operate the Omnipad to place the cursor on the location desired for an event marker. Press the [EVENT] key to inscribe the event marker. The event marker is inscribed on the vertical fan display, as well as the horizontal and video plotter displays. "Previous event marker" Display area NAV DATA "Latest event marker" To delete all event markers, place cursor outside display area and press the [MENU] key. Figure 3-11 How to inscribe, delete the event markers 3-8 1 Deleting all event markers All event markers can be erased from the screen as follows: 1. Operate the Omnipad to place the cursor outside the display area. Press the [EVENT] key to show the following dialog box. Do the next step within four seconds, otherwise the dialog box will be erased. DELETE EVENT MARK?Press to select YES and press the [MENU] key. All event markers are erased from the screen. 3. 10 Depth and Horizontal Range Markers The depth and horizontal range markers function to measure the horizontal range and depth to a desired echo. Note: Depth and horizontal range markers cannot be inscribed from the vertical fan display when it is in the sub window (Horizontal/vertical fan display). Inscribe the markers from the horizontal display to show it in the vertical fan display. Operate the Omnipad to place the cursor on the location desired. Press the [MENU] key to register your selection and close the menu. 3. 12. 1 Vertical menu description TVG LEVEL: Compensates for propagation loss of sound in water. GAIN ADJUST: Compensates for too weak or too strong echo level. Adjust it when the gain on the vertical fan mode is not the same as that on the horizontal and echo sounder modes. COLOR: Sets transfer characteristics of input signal level versus display echo level. Echo strength is emphasized in order of CUBE, SQUARE, LINEAR, LOG. You can see the characteristics of each by watching the color bar as you change the setting. Displays weak to strong echoes in their respective levels. This setting is suitable for general use. LINEAR: Downplays the weak echoes when compared with LOG. Effective for suppressing weak echoes such as plankton. SQUARE: Strong echoes are emphasized more than in LINEAR. [. . . ] vii SYSTEM SETTING 1 menu. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8 SYSTEM SETTING 2 menu. . . . . . . . . . . . . . . . . . . . . . . . . 5-10 T TARGET key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17 - 2-19 Target lock echo mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19 manual reverse mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]