SI-TEX SVS-650
28
Operation
About the Gain control:
The Gain setting controls the ability of the SVS-
650 to differentiate between echo’s of different signal
strengths. In general the Gain should be as high as possible, to detect fish and to show bottom
details. However, if the gain is set too high, the unit will begin to see air bubbles in the water, debris
and other background noise. Use a higher gain setting for deeper water, and a lower setting for
shallower water.
1.
Auto or Manual Gain selection:
▶
The SVS-650 can be quickly and easily switched between Auto and Manual Gain by simply
pushing on the Gain control knob. (The default setting for gain is Auto Gain)
2.
Setting the Gain:
▶
Rotate the [GAIN] control to the right to increase the gain. Rotate to the left to decrease the gain.
In Auto Gain the SVS-
650 Gain level indicator midpoint is “0” and goes up to +10 or down to -10.
Even in Auto gain it may be advisable to adjust the gain upward for optimum fish finding performance.
In Manual Gain the SVS-650 Gain level indicator starts at 0 and goes up to 50.
(In manual gain a selection of 20 is a normal gain level for shallow water use)
About the STC control:
STC is a very useful function normally only found on more sophisticated commercial echo sounders.
It allows you to reduce the gain in just a small targeted area of the display, without affecting the overall
receiver sensitivity. The STC control will reduce the gain on the screen starting from the surface and
working its way down the screen into deeper depths. You want to be very careful about not using too
much STC because it will also reduce Fish returns if too high of an STC level is applied. Starting at a
zero level turning the STC control to the right will increase the level and start eliminating clutter on the
screen starting at the very top edge of the display, and working down into deeper depths.
(The default setting for the STC level is 0)
Summary of Contents for SVS-650
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