Quote Originally Posted by Vik3 View Post
Yes, the lower gold female connection, that should send/receive signals from left piezo of SI transducer, in my 385ci DI is dead (empty), but upper gold female connection, that send/receive 2D signals is alive. What I did is – I partly removed plastic cover on the cable, exposed very upper and very lower wire, cut the upper wire and connected its end from sonar to lower wire ( without it cutting – it was empty) that goes to the left piezo.

In the beginning I got a very dark picture of the left SI side in 2D window, but after putting the following settings for 2D sonar:

1) Set 455 kHz,
2) Set Clear Mode,
3) Surface Clutter -1
4) Noise Filter- High2,

I got pretty good SI pictures of both sides in DI and 2D windows (views).
This isn't making sense to my simple mind.....

The left SI piezo in the Compact SI xducer is operating thru the 2d channel of the 385c DI ...(if I'm understanding the wire re-routing you made in the xducer cable end)...

I don't understand how "any" signal thru the 2d channel of the 385c DI unit is showing up as "left SI" data in Humviewer....

Rickie