Humminbird Matrix 20 - Manual (Page 36)

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Fish Sensitivity
Fish Sensitivity adjusts the threshold of the Fish ID+ TM
detection algorithms. Selecting a higher setting allows weaker returns to be
displayed as fish. This is useful for identifying smaller fish species or baitfish.
Selecting a lower setting displays fewer fish from weak sonar returns. This is helpful
when seeking larger species of fish. Fish Sensitivity is used in conjunction with Fish
ID+
TM . Fish ID+ TM must be On for Fish Sensitivity to affect the ability of the Fishing
System to identify sonar returns as fish.
To change the Fish Sensitivity setting:
1. Highlight Fish Sensitivity on the Sonar main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Fish
Sensitivity setting. (Low = 1, High = 10, Default = 5)
Real Time Sonar (RTS™) Window
RTS™ Window sets the RTS™ Window to either Wide or
Narrow, or turns it off in the Sonar View. The RTS™ Window always updates at the
fastest rate possible and only displays returns that are within the transducer beam.
(See Real Time Sonar (RTS™) Window for additional detail).
To change the RTS™ Window setting:
1. Highlight RTS Window on the Sonar main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the RTS™ Window
setting. (Wide, Narrow, Off, Default = Wide [Default = Off for Matrix 10])
RTS™ Window (Narrow) RTS™ Window (Off) RTS™ Window (Wide)