Traditional 50/77/200 Khz Sonar; Chirp Sonar; Garmin Clearvü Sonar View - Garmin AQUAMAP 10x2 Series Owner's Manual

Traditional 50/77/200 kHz Sonar

Fishfinder uses ultrasonic signals to detect the bottom of the ocean.
Traditional 50/77/200 kHz sonar sends only one frequency at a time.
Since the only feedback is from this one single frequency, there is limited
information to work with, restricting the clarity and resolution. Lower
frequencies with wider sonar beam angle would result in a broader and
deeper detectable area. Conversely, higher frequencies with narrower beam
angle would result in higher resolution images with better target separation.

CHIRP Sonar

CHIRP sonar is one of the most sophisticated sonar technologies available
for the fishing and boating public. The word is an acronym for Compressed
High-Intensity Radiated Pulse (C-H-I-R-P). CHIRP sonar provides amazingly
clear target separation and definition because it puts more energy onto the
target than traditional sonars.
Instead of sending just one single frequency, CHIRP sonar sends a
continuous sweep of frequencies ranging from low to high. Garmin CHIRP
sonar technology then interprets each frequency individually upon its return.
This provides much more information, from which CHIRP sonar is able
to construct a much clearer, higher resolution image with greater target
separation and crisper fish arches.
For example, 80-160 kHz sonar sweeps through the entire range from 80 kHz
36
all the way up to 160 kHz, hitting every single frequency in between.
Garmin ClearVü Sonar View
NOTE: To receive Garmin ClearVü scanning sonar, you need a compatible
transducer.
Garmin ClearVü high-frequency sonar provides a detailed picture of the
fishing environment around the boat in a detailed representation of structures
the boat is passing over.
AQUAMAP™ 10x2/12x2 SERIES