Furuno CH-250 Operator's Manual page 65

Display of net hauling
This is an example of net hauling display. The location of the net is indicated clearly.
FORE
AFT
Net
Figure 3-20 Net hauling and sonar picture
False echo
In shallow water (depth less than 100 m) detection, unwanted echoes shown in the figure may
appear. This phenomenon is caused by the false echo from the previous transmission. Reducing
the Tx rate on the COMN menu may lessen this effect.
PORT STBD
False echo
Bottom Fish
Range
Figure 3-21 False echoes
3-15