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6. ADVANCED OPERATION
General
It this section, how to use the CSH-5 MARK-2 effectively in actual
fishing operations is presented.
Measuring Range and Bearing to a Target
To measure the range and bearing to a target, use the trackball.
Procedure
1. Operate the trackball to place the trackball mark “ ” on the tar-
get you want to measure the range and bearing. The range and
bearing are displayed at the left top on the screen.
Trackball Mark
Slant Range
Horizontal Range
Depth
bearing
Note:
The bearing is shown in either 360° or 180° indication system
relative to the ship's heading. In the latter case, “B” is indi-
cated as follows.
B P ------- on the port side
B S ------- on the starboard side
The 360° or 180° indication system can be selected on the menu-2.
See page 33.
Detecting Fish Schools Aurally
Occasionally you will be preoccupied with other tasks and unable to
concentrate on watching the sonar picture. In such cases it would be
a good choice to use the audio function. This function enables you to
monitor echoes from fish schools and seabed through the built-in
speaker.
After you become accustomed to utilizing the audio function, you
should be able to detect a fish school from a range longer than you
can detect it on the screen.