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7. CUSTOMIZING YOUR UNIT
7-33
Sounder system setup menu description (con’t from previous page)
Item Description Settings
STC (HF, LF)
(For ETR-30N
only)
Adjusts STC level for the high and low
frequencies, and is useful for
suppressing surface noise. The
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.
0-10
FREQ. ADJ.
(HF, LF) (For
ETR-30N
only)
Interference from other acoustic
equipment operating nearby or other
electronic equipment on your boat
may show itself on the display. You
may suppress these type of
interference by adjusting frequency.
-10 - +10 %
TARGET
ECHO
(For ETR-30N
only)
Sets fishing objective.
Normal for general fishing, Surface for
detecting surface. Pulse repetition
rate is higher than NORMAL on the
specified transducer.
Normal, Surface
B: SENSOR
SETUP
soft key
(See next
page.)
Offsets speed, depth and water
temperature indications and speed of
sound.
See next section for details.