DD explanation needed

[msysta]

Hello

I have opened DD coil which I don't quite understad. Can you explain how does the wiring go in this one... This is from Whites BC4. Apparently PI machine.

[Qiaozhi]

Hello

I have opened DD coil which I don't quite understad. Can you explain how does the wiring go in this one... This is from Whites BC4. Apparently PI machine.

[ATTACH]36425[/ATTACH]

The BC4 (Beach Comber) is an IB/TR non-motion entry-level detector. It is not a pulse induction machine.