45
moves out of the range, inconsistent signals or even no
signals will be transmitted to the handheld.
2.
2. Nothi
Nothing is disp
ng is displayed after the handheld’s power is
layed after the handheld’s power is
switched on
switched on.
Be sure the battery's positive and negative poles are corr-
ectly oriented in the holder. Also, check if the battery has
enough capacity.
3.
3. When using the device in shallow water areas, the screen
When using the device in shallow water areas, the screen
does not display things normally and depths are not
does not display things normally and depths are not
indicated with consistency.
indicated with consistency.
The sensor has a perfect performance in water from
4 to 100 feet (1.2~30m) deep. Abnormal display and
inconsistent depths may occur when used in areas with
depth less than 1.2m. Try to use it in deeper waters.
4.
4. The picture displa
The picture displayed on the sc
yed on the screen vibrates and the sea
reen vibrates and the sea
bed contour has abrupt changes.
bed contour has abrupt changes.
The picture vibrates because the sea bottom depth being
scanned is changing. Since the depth range used by the
Summary of Contents for FC80
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