Owner`s manual

9
OPERATION
Figure H shows the three main controls of the FL-18.
They include Power and Range control, Mode Setting
control, and Gain control.
POWER AND RANGE CONTROL
The knob located at the bottom of the control panel
turns the unit on and selects which range is to be used.
The far left position is the OFF position. There are five
depth ranges to choose from.
Standard Unit
x1 = 0-20’, x2 = 0-40’, x3 = 0-60’, x4 = 0-80’,
and x10 = 0-200’
Custom Deep Unit
x1 = 0-30’, x2 = 0-60’, x3 = 0-90’, x4 = 0-120’,
and x10 = 0-300’
To activate the unit and select the appropriate range, turn the Range
knob to the right. To read the correct depth on the display you must cor-
relate your range setting with the proper scale on the display. For a range
selection of x1 you would read the white numbers on the display direct-
ly to read the proper depth. For a range selection of x2 you would read
the white numbers and multiply the reading by two. Multiply the read-
ing by three for x3, four for x4, and ten for x10.
For example, figure J on page 12 shows the leading edge of the bottom
at fifteen feet. With a range setting of x1 you would interpret this as 15
feet deep. With a range setting of x2 you would interpret this as 30 feet
deep. With a range setting of x3 you would read the depth as 45 feet
deep. x4 would read as 60 feet and x10 would be read as 150 feet.
If the unit were a Deep Range model, you would read the depth the
same way. The only difference is that the multiplier is 30 instead of 20.
Figure H