I did have the si transducer connected to the y cable. When I bypassed the y cable and plugged the 1kw transducer directly into the 1197, it seemed to work, but I have not water tested this yet. I was under the impression that by using the y cable, I could keep the side imaging signal and receive the signal from the 1kw 200/50 transducer instead of the 200/83 incorporated in the si transom mount transducer.
I fish exclusively in saltwater at depths from 60feet for snapper to 2000 ft for swordfish, but mostly in the 200-400 ft range, and I am trying to keep side imaging while increasing the bottom capabilities.