Japan Radio Co. JFE-680, Instruction Manual

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G Ge enera neral Info l Info rm rm a ati ti on on
Thank you Thank you for purchasing for purchasing the Japan the Japan Radio Co., Radio Co., Ltd. JFE-680 Ltd. JFE-680 Echo-Sounder. Echo-Sounder. The JFE-680 The JFE-680
conforms to the conforms to the IMO (International Maritime Organization) performance standards, enabling IMO (International Maritime Organization) performance standards, enabling
seabed displays and digital depth displays. seabed displays and digital depth displays.
Before attempting to operate this equipment, read this Before attempting to operate this equipment, read this instruction manual thorough instruction manual thoroughly to ly to
ensure correct and safe operation in accordance with the warning instructions and operation ensure correct and safe operation in accordance with the warning instructions and operation
procedures.
procedures.
You are strongly recommended to store this instruction manual carefully for future reference. You are strongly recommended to store this instruction manual carefully for future reference.
In the event
In the event that you have an that you have an operational proble operational problem or malfunction, this m or malfunction, this manual will provide manual will provide
useful instructions useful instructions
General General Information Information ii