Fishfinder 340C Owner’s Manual usIng the fIshfInder 340c > usIng the MAIn MenuGraph TabThe Graph tab enables you to determine the appearance of theSonar Pages.The following settings are available:• Fish Symbols—sets how the Fishfinder interprets suspendedtargets and background information. If you select a fishsymbol, the Fishfinder identifies some returns for you byreplacing them with fish symbols (in large, medium, andsmall sizes based on the size of the sonar return). If youare using dual beam, fish symbols from the narrow beam(directly underneath your boat) are solid, and the returnsfrom the wide beam (out to the sides of your boat) arehollow.(default) the Fishfinder does not interpret the sonarreturn data.suspended targets appear as symbols. Nobackground information appears.suspended targets appear as symbols with nobackground information shown. The target depth isindicated.suspended targets appear as symbols. Backgroundinformation appears, making the distinctionbetween fish and structure easier.suspended targets appear as symbols withbackground information shown. The target depth isindicated.• Scale—controls the depth scale shown vertically along theright side of the graph. The settings are Overlay (default), inthe Corners, basic scale, or No Scale.• Custom Range—allows you to specify a custom viewingrange or scale. When On, this range appears as Custom inthe Range setting. The left value is the top of the scale andthe right value is the bottom of the scale.• Color Scheme—sets the colors for the Sonar and FlasherPages. The default setting is Classic White.• Temperature and Water Speed—hides or showstemperature and water speed on the Sonar Page. When set toAuto, the Fishfinder automatically shows this information ifit is received from a capable transducer.