Furuno FCV-800 User Manual

1. OPERATION
1-6
1.5.2 Single frequency display
Low frequency: The sounder
uses ultrasound pulse signals to
detect bottom conditions. The
lower the frequency of the signal,
the wider the detection area.
High frequency (Medium
frequency): The higher the
frequency of the ultrasound pulse
signal, the better the resolution.
High (or medium) frequency is
ideal for detailed observation of
schools of fish.
Note: By changing the display mode settings, Bottom Lock display (or Bottom Zoom
display) can also be displayed in full screen (see subsection 1.5.6).
1.5.3 Dual frequency display
High and medium frequency images are simultaneously displayed on the right half of
the screen and low frequency images are displayed on the left half of the screen. Dif-
ferent frequencies allow for different ranges (beam widths) to be seen and fish species
to be reflected, allowing for identification of fish species and knowing if you are getting
close to the center of a school of fish.
Low Frequency
Searching area
High Frequency
Low
frequency
Low
frequency
High
freguency
High
freguency
Beamwidth
Resolution
Detection
range
Bottom
tail
Low freq.
High freq.
Wide
Narrow
Low
High
Deep
Shallow
Long
Short

Furuno FCV-800 Specifications

General

Brand	Furuno
Model	FCV-800
Category	Fish Finder
Language	English