Furuno CH-250 manual Transducer being lowered

SPEED ALARM MESSAGE: Turn on (default setting) to display speed alarm message and sound the audio alarm when ship’s speed exceeds allowable speed for a given transducer operation. The audio alarm can be silenced with the [R/B] key.

[↓ ] pressed to lower transducer

Speed above 15 kts	Message 1 appears. Reduce speed below 15 kts to restore
	normal operation.
Transducer being lowered

Speed over 15 kts

Message 1 appears and lowering continues.

Transducer lowered

Speed above 20 kts	Message 2 appears accompanied with the aural alarm. Reduce
	the speed below 20 kts to restore normal operation.
[↑ ] pressed to raise transducer
	Message 1 appears accompanied with the aural alarm.
Speed above 15 kts	Transducer is not raised. Reduce the speed below 15 kts to
	erase the message and restore normal operation. Then, press [↑ ]
	again to raise the transducer.
Transducer being raised

Speed above 15 kts

Message 1 appears and raising continues. Reduce the speed below 15 kts to erase the message and restore normal operation.

SHIPS SPEED EXCEEDS 15 kt.

(SLOW DOWN UNDER 15 kt WHEN MOVING TRANSDUCER UNIT.)

PRESS R/B KEY TO SILENCE ALARM.

TRANSDUCER REMAINS LOWERED.

(REDUCE SHIP'S SPEED AND PRESS

↑TO RETRACT IT.)

PRESS R/B KEY TO SILENCE ALARM.

Message 1 Message 2

SWEEP INDICATOR: Shows train position in the horizontal mode and tilt angle in the vertical fan mode, with a line or a dot. (See the illustration on page 2-2 and 3-2.)

SOUNDOME SER. NO.: Set according to serial no. of soundome. Note that the setting is not cleared when default settings are restored.

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