When removing the power cord, be sure to remove the 
power cord terminal correctly. 
If the power cord is pulled, the cord may be damaged 
resulting in a fire or an electrical shock. 
Do not install the units on the place being poor 
ventilation. 
Otherwise, the set that is heated may cause a fire or 
failure. 
For safety when the equipment is to be left unused for an 
extended period, turn off the power switch. 
When turning on the power, be sure not to press any operator panel key at the 
same time.    Alternates to the hardware configuration of the until could cause 
the unit to malfunction. 
Take care when laying the transducer cable, power cable, and earth lead as 
positioning has an affect on electromagnetic interference.    There is a risk of 
interfering with other equipment or the echo-sounder being interfered with by 
the other equipment. 
After installing the echo-sounder, turn on the power to all other equipment to 
check for interference with or from all the equipment.    Interference may cause 
malfunctions. 
Usage Hints  vi