USING THE 405SX
MENU FUNCTIONS
Bottom Black. There are two selections available: Off and On. The factory setting is Off. With this setting, the 405SX displays the bottom using 4 level grayscale. This allows you to determine the texture and
relative hardness of the bottom. Selecting Bottom Black “ON” causes the unit to
blacken in the display below the bottom. This gives the
user easiest recognition of the bottom location, even from a
great distance.
The 405SX remembers the Bottom Black setting when powered off.
Fish ID. There are three selections available: Off, ID+
ON, and Adjust. The factory setting is ID+ OFF. With Fish ID
Off, sonar returns are
displayed as “raw” information. There is no interpretation made by the unit. Selecting ID ON also enables the fish alarm.
ID+ On enables the to interpret the raw sonar data and,
using a variety of techniques, depict appropriate target ID+ On Raw Sonar returns as one of three different size fish symbols. Further
identification shows which beam the fish is detected in.
The 405SX also displays the depth beneath the surface with the corresponding fish symbol.
Selecting Adjust and making incremental changes enhances the fishfinder’s ability to identify sonar returns as fish symbols.
Increasing the value to a number greater than zero shows more fish symbols
22
