1All metal mode
Every Target ID is accepted. Maximum information, but iron and trash signals come through too.
2Poor discrimination
The mask is too aggressive. Trash is quieter, but a desirable high-ID target is accidentally silenced.
3Smart discrimination
Only unwanted ID zones are masked. Coins and silver stay open, clear, and audible.
Accepted / audible
Uncertain / depends
Rejected / silent
Masked ID zone
Note: Target ID ranges are illustrative, not to scale
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