Introduction
1
SECTION 1 Introduction
1.1 Function
The color echo sounder JFC-130/130HP is a device, where the transducer mounted on the bottom or side of the hull
emits ultrasonic waves toward the sea bottom and catches the waves reflected from the fish under the ship so as to
find fish.
The schools of fish are displayed on the 10.4-inch color LCD screen in various color according to the intensity of
the response from the fish. Display modes include the three ordinary display modes of the low-frequency display,
high‐frequency display, and parallel display of low- and high‐frequency images as well as such functions as the
partially enlarged display mode, sea-bottom enlarged display mode, and mixed display mode. Further, the function
of parallel display of A-scopes, where the intensity of the response from the fish is displayed in both color tone and
width, is provided. In addition, the water-temperature
*1
and water-depth graph display functions, that enables to
display the graphs showing the variations of water temperature and water depth as superimposed on the image of the
schools of fish.
*1
: A water temperature sensor is required for the display of water temperatures.
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