Eagle Electronics 640C Fish Finder User Manual


 
39
Turn off the unit by pressing and holding the
PWR key for 3 seconds.
Main Menu
The unit has a Main Menu which contains both function and setup op-
tion commands. The instructions in this section will deal with sonar
functions, the basic commands that make the unit show sonar signals on
the screen. This sonar unit will work fine right out of the box with the
factory default settings. But, if you want to learn about the various sonar
options, see Sec. 4, Sonar Options & Other Features.
You can access the Main Menu from any of the four Page screens by
pressing
MENU|MENU. To clear the menu screen and return to the page
display, press
EXIT. Remember, our text style for "MENU|MENU" means
"press the Menu key twice." See a full explanation of our instruction
text formatting on page 5, "How to use this manual…".
Main Menu.