Sonic KCS-3500, Operation Manual

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5-10
5.3 Operations for preset
5.3.1 TM/RM
(1) RM/HU
In this mode, the bow of the ship always points at the top of the screen. The position of
the ship is fixed at the center of the screen. The reflected image of the fish school
moves around on the screen relative to the movement of the ship. Normally, the system
is operated using these settings for finding the fish school.
(2) RM/NU
In this mode, the top of the screen always points north. The ship is fixed at the center of
the screen and the mark representing the ship turns as the ship changes its courses.
The reflected image of the fish school moves around on the screen relative to the
movement of the ship.
(3) TM/CU
In this mode, the top of the screen always points north and the fixed objects are
displayed at their fixed positions on the screen. The reflected images of the ship and
the fish school move around on the screen in accordance with their movements. This
mode is used to observe the movements of the ship and the fish school. Data on the ship
speed and the bearings is required in order to observe these movements.
When the ship gets out of the screen, the screen automatically changes so that the ship
is displayed at the center of the screen once again.