Eagle Electronics FISHMARK 320 - Manual (Page 36)

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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 options. (Full Sonar Chart, Split Zoom
Sonar Chart, Split Frequency Sonar Chart and Digital Data.)
3. MENU – Press this key to show the menus and submenus, which
allow you to select a command or adjust a feature.
4. ARROW KEYS – These keys are used to navigate through the
menus, make menu selections, move the sonar chart cursor and enter
data.
5. ENT (Enter) – This key allows you to accept values or execute menu
commands.
6. EXIT – The Exit key lets you return to the previous screen, clear
data or erase a menu.
7. ALARM – The Alarm key is a quick shortcut to the sonar alarms
menu. It allows you to choose which alarms to use and when.
8. ZOUT – (Zoom Out) – This key lets you zoom the screen out. This
key returns you to a full sonar chart display, showing the entire water
column from surface to bottom.
9. ZIN – (Zoom In) – This key lets you zoom the screen in. It enlarges
fish signals, bottom detail and other sonar returns.
Power/lights on and off
To turn on the unit, press PWR .
To change the backlight, press PWR again. This unit has two backlight
levels to select from. Repeatedly pressing PWR will cycle through the
backlight settings, turn off the backlight, then turn it back on again.
Turn off the unit by pressing and holding the PWR key for about 3 seconds.