Sea hunter mark II question

[acasto]

New Garret owner here.
I have read everything I can find on PI machines. Just received two books from CJC to help with the learning curve.
Can someone tell me what I am doing, electronically speaking, when I turn the elimination knob from 0 to 9?

Is it changing the delay before sampling a target signal?

Here is why I ask. I tested the SH today on several targets in my test garden. I was able to "eliminate" each known target by slowly increasing the elimination number.
For instance, at 0, it would see a nickle, but at about 4, it would pass over the target. At around 6, 18kt gold would disappear. Quarters were good all the way up to 8 or 9.
I am hoping I can use this to help me ID targets a little,
I know the rule of thumb is to dig all targets, I am just trying to understand how this particular machine works.

Thanks
Tony

 

[Rob in (Ca)]

Tony

Even-know Garrett Markets The SH2 as a Discrimination Machine, which just confuses people . Any one trying to knock out Junk Targets, you are also knocking out The Jewelry

As with all Beach PI'S Set the Discrimination to zero and dig all Targets . Any one that must hunt with Discrimination, only discriminate out Bobby pins and still accept a US nickel, would be the highest discrimination I would go.