CP370 and B164 not functioning right

[dhong24]

I recently upgraded to a CP370 because my DSM300 just performed poorly offshore. I would lose bottom frequently as well inshore. The CP370 is connected to my E120 via A62360 to E55060 to E55049. The transducer I use is a B164 with a 20 degrees tilt. First time out I noticed I still lost bottom while i sped up and performance offshore was still poor and at times the screed showed "levels" of blocks. While back in the harbor the screen blanked red but showed the depth and didn't change with any gain adjustments. Temp has never been an issue and always worked. Very frustrated and just want my system to work properly.