On my GP1971F,the BDS function is showing sand or mud at 99,99% of time no matter what the bottom quality is.
The Airmar B45 is chosen as the active transducer in the menu,I am positive that the tansducer is level when the boat moves and leans 2° front when stopped (We see small jigs till the bottom) no air bubbles or interference noise is present on the screen.
The firmware is the 5.1,Voltage is 28v whith the engine running.The depth we checked the BDS was 12 to 70 meters,the bottom image without the BDS seems OK,showing clear enough fluctuations of the bottom hardness.
I would be gratefull for any suggestion.
The Airmar B45 is chosen as the active transducer in the menu,I am positive that the tansducer is level when the boat moves and leans 2° front when stopped (We see small jigs till the bottom) no air bubbles or interference noise is present on the screen.
The firmware is the 5.1,Voltage is 28v whith the engine running.The depth we checked the BDS was 12 to 70 meters,the bottom image without the BDS seems OK,showing clear enough fluctuations of the bottom hardness.
I would be gratefull for any suggestion.
