Raymarine L470 Setup Instructions, conditions occurs shallow, deep, or fish alarm. For the

	operating with dual frequencies, the buzzer will produce two
	tones— one right after the other. If a fish has been detected
	by the 200 kHz beam, a high tone will be followed by a
	lower tone. If the fish is detected by the 50 kHz beam, the
	low tone will sound first, followed by the higher one.
Buzzer	A buzzer can be set to sound when any of the alarm
	conditions occurs (shallow, deep, or fish alarm). For the
	shallow or deep alarms, the “S” or “D” symbol at the top of
	the screen flashes. By pressing the		CLEAR	button, you can
	silence the buzzer for the current alarm condition. The
	“S” or “D” symbol will continue to flash as long as the alarm
	condition is still present.
	If the alarm condition occurs again, the buzzer will sound
	again. (For example, this would happen if, after a shallow
	alarm you moved into deep water, then returned to shallow
	water.) You can silence the buzzer again by pressing the
	CLEAR	button.
	The Buzzer entry in the System Setup Menu can be set in
	three possible ways. Use the < and > controls to make
	your choice.
	When the Buzzer entry is set to Off, the buzzer is silenced
	for all of the alarms. Once you choose the “Off” setting, the
	buzzer symbol at the top of the screen will appear hollow.
	If the Buzzer is turned off, and a shallow alarm or deep
	alarm occurs, the “S” or “D” symbol will flash, but the
	buzzer will not sound. You can enable the buzzer again at
	any time by calling up the System Setup Menu, going to the
	line for Buzzer, and turning the item on again. Once you do
	this, the buzzer symbol at the bottom of the screen will
	appear solid.
	When the Buzzer entry is set to Alarm, the buzzer will work
	with the alarm functions only. The unit will not sound a
	short “beep” when you press a button.
	When the Buzzer line is set to On, the buzzer will
	respond to alarms, and will sound a “beep” each time
	you press a button.
Setup Instructions					69