Teleflex TFX320 Operation Manual page 20

USING THE 320 SERIES
CONTROL PANELS
W L . White Line activates and adjusts a
HITE INE
feature which changes how the 320 draws the
bottom contour and structure, as well as show
fainter sonar returns more clearly. When a White
Line setting of 1 to 8 is strongest sonar returns
within the sonar image and makes a distinctive
outline along the bottom contour, structure and
fish. Selecting a larger numeric setting increases the
width of the band and makes fainter sonar returns
more noticeable; however the 320's ability to show
subtle differences in bottom composition and
structure is reduced. Selecting a smaller numeric
setting narrows the band, and shows greater
variation in bottom composition. Selecting"OFF"
turns the White Line feature off.
White Line
D A activates a shallow water depth
EPTH LARM
alarm. The alarm will sound when the digital
depth becomes equal to or less than the
setting. The tone sounds at a rapid rate for several seconds and then sounds
intermittently until the boat moves to deeper water. The Depth Alarm can be
muted by pressing the Control Panel knob; once muted the alarm will not
sound again until the boat moves to water greater than the Depth Alarm
setting. Remember, depth is measured from the transducer, not the surface of
the water.
The Depth Alarm setting is not retained in memory when the 320 is turned off.
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