The signal does not stop there- it is reflected downward again by the surface of the water, and a weak “second return” is usually visible if the depth range is sufficient to see it. The second return may be used as an indicator for setting the sensitivity bias.
USING THE COMBO VIEW
The Combo view combines a 3D view with a 2D view on the same screen. This is an ideal view for 2D users learning to interpret 3D information. Also, you can view a wide area of coverage on the 3D portion of the screen, but retain the bottom detail of the 2D view.
CONTROL FUNCTIONS
The Wide 3D View unit uses only eight buttons to control all functions. The controls are divided into two groups: POWER, STOP, VIEW, and LIGHT are one group., and the Menu System controls are the other group. When any button is pressed, an audible “chirp” will verify the control input.
POWER, as previously discussed, powers the Wide 3D View for normal operation. Also if the unit is powered off, press and hold POWER until you hear a continuous “chirp” to enable simulator operation as discussed in “Simulator Operation”. Pressing POWER when the unit is in normal or simulator operation will power the unit off.
STOP freezes the display to allow closer study. Pressing STOP again will resume normal operation. Also, if a menu is
VIEW toggles between the three main views; 3D view, 2D VIEW, AND Combo view when using the standard transducer. If you are using the optional Wide Side transducer, VIEW toggles between the left, right, both, and down views.
LIGHT enables a
The four remaining buttons work together to control the Menu System - an array of menu controlled functions.
