Vexilar LC-507 - Manual (Page 13)

13
ADJUSTING THE DEPTH RANGE
You can adjust the depth range independently for
each beam. You can also use the Automatic Range fea-
ture to let the LC-507 do it for you. The current depth is
displayed in the lower left corner of the display. There
is also a depth scale displayed on the right side of each beam dis-
play which indicates the current Range setting for that beam.
To change the depth range push the up or down arrows. Up
changes to the next shallower range. Down changes to the next deep-
er range. Hold the button in to move through the ranges quickly.
Press the A button below the Range control to activate or deactivate
the Automatic Range feature.
When Auto Range is on, an R will
be displayed at the top of the
screen.
Range is simply how deep the
unit will read. Usually, you want
the unit to read the depth down to
the bottom, but there are times
when you may want to see multi-
ple echoes, which are deeper than
the bottom.
ADJUSTING THE GAIN
There are separate Gain controls for each beam. Gain
controls how much of the sonar signal you see on the dis-
play. With too low of a Gain setting, you will miss some
things. With the Gain set too high, you will see to much. It is rec-
ommended that you use the Automatic Gain Control feature, unless
you have a specific reason not to. To activate the Automatic Gain
Control feature, press the A button below the Gain control arrows.
The letter G will displayed at the top of the display indicating that
the feature is on. Press this A button once again to deactivate the
feature. To manually change the Gain level, simply press the up
arrow to increase the level and the down arrow to decrease the level.
The Gain level is indicated in a bar graph at the top of the display.