SonarPhone SP100, Руководство пользователя

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SP200/SP300 ONLY: When using the Wide 40 degree angle, you will
need turn up the gain higher than when using the 20 degree angle.
This is normal, as the cone of sound is covering twice the area.
Auto Depth Range
This setting allows SonarPhone to control the depth range setting
for you. It will do it's best to keep the bottom in view at all
times, switching depth ranges as needed. Change this setting to
OFF and you can control the range setting manually.
IMPORTANT : While using manual range operation, if the depth is
greater than the depth range setting, the bottom will not be visible
on screen. Change the range to a deeper setting or select "Auto"
to return to automatic operation.
Depth Range
This setting allows you to manually change the range setting,
meaning how deep SonarPhone will read depth. The ranges available
are: 0—9 feet, then 10 foot increments deeper to 120 feet (0—3 meters
to 0—36 meters)
Upper Limit
The Upper Limit is the shallowest point in the water column which
will be displayed on the chart.
Lower Limit