Furuno 1824C manual Sounder system setup menu description con’t from previous

7. CUSTOMIZING YOUR UNIT

Sounder system setup menu description (con’t from previous page)

Item	Description	Settings
STC (HF, LF)	Adjusts STC level for the high and low	0-10
(For ETR-30N	frequencies, and is useful for
	suppressing surface noise. The
only)
	setting range is 0-10; the higher the
	setting the greater the extent of
	suppression. Setting 10 suppresses
	noise up to several meters. Turn off
	the STC when there is no noise on the
	screen, otherwise weak echoes may
	be missed.
FREQ. ADJ.	Interference from other acoustic	-10 - +10 %
(HF, LF) (For	equipment operating nearby or other
ETR-30N	electronic equipment on your boat
only)	may show itself on the display. You
	may suppress these type of
	interference by adjusting frequency.
TARGET	Sets fishing objective.	Normal, Surface
ECHO	Normal for general fishing, Surface for
(For ETR-30N	detecting surface. Pulse repetition
only)	rate is higher than NORMAL on the
	specified transducer.
SENSOR	Offsets speed, depth and water	See next section for details.
SETUP	temperature indications and speed of
soft key	sound.
(See next
page.)

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