This manual introduces the operation method of JFE-680 echo sounder
This manual introduces the JFE-680 Echo Sounder, confirming its compliance with IMO performance standards for seabed and digital depth displays. It emphasizes the importance of reading the entire document to ensure safe and correct operation, and it outlines the symbols and pictograms used throughout the guide.
The guide offers detailed usage hints, safety cautions, and installation advice, including proper handling of power cords, fuse replacement, temperature limits, and grounding requirements. Contact information for JRC service centers worldwide is provided for further assistance.
Immediately turn off the power switch and contact JRC or its agent.
No, the equipment must not be stored or operated below –15 °C.