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BEFORE USE
TURNING the POWER ON/OFF
POWER ON
Press the POWER key on the Operation unit.
“Please wait!” appears on the screen. The Transducer unit is automatically lowered if “TD
AUTO DOWN – ON” previously set.
In case “TD AUTO DOWN – OFF” is previously set, it is lowered only after pressing the
Lower key ( ↓ ).
POWER OFF
Press and hold the key when turning the power off.
The power is turned off after “Please wait!” appears on the screen.
The Transducer unit is automatically raised.
Note that slight touch of the key will not turn the power off.
KEY OPERATION
A beep sounds when operating key correctly.
Three short beeps sound when operating wrongly or not accepting the operation.
PREVENTIVE MEASURE for INTERFERENCE in the AREA of
SHIP CONGESTION
When the fishing ground is crowded with many fishing boats, the sonar is subject to
interference from ultrasonic equipment (echo sounder or sonar) on other boards as well as
those on own ship. As preventive measure for interference the change of the used
frequency or the reduction of the transmitting sound pressure level should be taken from the
broadband sonar, the dual frequency sonar and the single frequency sonar accordingly.
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