CHAPTER 2 GETTING STARTED
32
CHIRP Sonar
CHIRP (Compressed High-Intensity Radiated Pulse) is one of the most sophisticated
sonar technologies available for the fishing and boating public. 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 all
the way up to 160 kHz, hitting every single frequency in between.
2.3.2 Adjusting the Range
The range controls the depth displayed on the sonar display. When range is set to
Auto
(the recommended setting), the depths will automatically track the bottom. Allowing
the device to adjust the range automatically keeps the bottom within the lower or outer
third of the sonar screen, and can be useful for tracking a bottom that has minimal or
moderate terrain changes.
Range can also be manually set to a specific depth. Manually adjusting the range enables
you to view a specified range, which can be useful for tracking a bottom that has large
terrain changes, such as drop-offs or cliffs. For example, if searching for fish no deeper
than 50 feet, the
Range
can be set to
50 ft
. The sonar display will then only show returns
within 50 feet.
• Rotate the main knob to manually adjust the range.
• Press
[RANGE]
to switch between
Auto Range
and
Manual Range
.
• You can also adjust the range by pressing
[MENU]
>
Sonar Setup
>
Range
.
2.3.3 Adjusting the Zoom
The zoom controls the “field of vision” within the specified range.
• Press
[ZOOM]
and select an option.
• You can also select a zoom option by pressing
[MENU]
>
Sonar Setup
>
Zoom
.
While adjusting the zoom, a zoomed view appears on the left, with a zoom scope on the
right edge of the screen.
Summary of Contents for CS 1522
Page 1: ...CS 1522 Professional Fishfinder Owner s Manual...
Page 44: ...CHAPTER 2 GETTING STARTED 42...
Page 72: ...CHAPTER 5 APPENDICES 70...
Page 73: ......
