Vexilar FL-8SLT - Manual (Page 9)

9
OPERATION
Figure I shows the three main controls of the FL-8SLT.
They include Power and Range control, Gain, and
Interference Rejection.
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 center position is the Off position. There are six depth
ranges to choose from.
S1 - 0-20' D1 - 0-30'
S2 - 0-40' D2 - 0-60'
S4 - 0-80' D4 - 0-120'
(D8 - 0-240' Deep Model)
To activate the unit and select the appropriate range turn the knob
to the left or right. To read the correct depth on the display you must
correlate your range setting with the proper scale on the display. Notice
that the shallow ranges are marked in white and the deep ranges are
marked in yellow. For a range selection of S1 you would read the white
numbers on the display. For a range selection of S2 you would read the
white numbers times two, and times four for S4. The same is the case for
the D ranges, only you would read the yellow numbers on the display.
For example, figure J shows the leading edge of the bottom at nine
feet on the white scale. With a range setting of S1 you would interpret
this as nine feet deep. With a range setting of S2 you would interpret this
as 18 feet deep. With a range setting of D1 you would look at the yellow
numbers and read the depth as slightly over 13 feet deep. D2 would read
26 feet. A setting of D4 would read the depth at 52 feet (13 x 4).
Figure I