Eagle Electronics 500C manual Keyboard, MMC slot access door

Section 3: Basic Sonar Operation

This section addresses the unit's most basic sonar operations. The in- structions presented in Sec. 3 follow a chronological order. Sec. 4, Sonar Options & Other Features, will discuss other more advanced functions and utilities. Material in Sec. 4 is arranged in alphabetical order.

Before you turn on the sonar unit, it's a good idea to learn about the different keys, the Main Menu, the four Page screens and how they all work together. BUT, if you just can't wait to get on the water, turn to the one-page Quick Reference on page 49.

Keyboard

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MMC slot access door

SeaCharter 500CDF sonar/GPS unit, front view, showing map with so- nar chart screen display, keyboard and access door for the MMC slot.

1.PWR/LIGHT (Power & Light) – The PWR key turns the unit on and off and activates the backlight.

2.PAGES – Pressing this and the ← → arrow keys switches the unit between the four different page screens. (Satellite Status Page, Naviga- tion Page, Map Page and Sonar Page.) Each page represents one of the unit's major operation modes.

3.MENU – Press this key to show the menus and submenus, which

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