Bodhi3
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Hello everybody!
When I had my White's DFX, it also featured the BottleCap Reject function and I've started investigating on how it worked.
Talking with some engineers that were in the detecting business, they've told me it analyzes the signal pseudo-randomness (including ferrous and non ferrous values) and if there is enough randomness, that is commonly produced by bottlecaps, it just suppresses the signal.
Most of the BC Reject filter are also customisable from mild randomness and strong randomness, since a lot of good targets may produce a little mix of ferrous/non-ferrous signal, especially on highly mineralised soils.
Best regards,
Leonardo/Bodhi3
Bottle Cap Rejection
in Nokta / Makro Legend Forum
Posted
As I know, Iron Bias/Filter actually does NOT really suppress any detected signal by itself, but it just gives a "bias" to ferrous or otherwise non-ferrous part of the mixed-up global incoming signal (depending on how it is set by the user).
It does NOT analyze mixed signal randomness, it just gives a "premium" (weight) to the ferrous or non ferrous part and THEN the discrimination setting will do the rest.
Anyway both Iron Bias and Bottlecap Reject should be designed to deal with mixed-up F/NF signals.
Regards,
Leonardo/Bodhi3