On the boat I have a Humminbird 1197 (used as master with SI Transducer and GPS) With Ethernet connected a Humminbird 958 (Sharing GPS from 1197 and for 2D also from 1197)
When 958 not connected, 2D on the 1197 works fine. When I connect the 958 then the pixels on the Humminbird 1197 (2D mode) becomes bigger. The SI still works fine. On the 958 it works fine.
Software on 1197 - 6.640
Software on 958 - 6.610
Any suggestions?