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when the water is full of materials in suspension, with bad sea conditions.
7.6WHAT SHOULD I DO IF THE AUTO MODES FAIL?
Failure of auto modes can happen for various reasons. Hereafter you can find a range of possibilities.
7.7
This usually happens if the STC is set to LONG or MID and the bottom is shallow or SHORT if the bottom is very shallow causing the
7.8AUTO RANGE FAILS, AND THE DIGITAL DEPTH READOUT DISPLAYS A VERY SHALLOW READING. WHAT SHOULD I DO?
This usually happens if the STC is off or is set to a low value causing disturbance from surface clutter to be stronger than bottom echoes. Try increasing the STC value. As general rule STC has to be set as in shallow waters and LONG in depth waters.
7.9
The Fish Finder capability to detect the bottom decreases as the bottom depth increase. If the bottom composition is soft as mud, if the sea conditions are bad, if there are thermoclines or the water is full of materials in suspension it can further decrease thus causing the digital depth readout to fail. When this happens the
7.10AT A VERY SHALLOW RANGE UPPER HALF OF THE SCREEN APPEARS ALMOST COMPLETELY FILLED BY THE SUR- FACE CLUTTER. HOW CAN I ELIMINATE IT?
This is normal in shallow waters. To clean up the surface clutter without degrading the digital depth readout algorithm functionality there are two modes: 1) If Surface Declutter = OFF it is possible to set the STC value to custom setting the STC length to the same size of the
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