What Does The Discrimination Control Do?
The discrimination control allows iron, silver paper and other rubbish items to be ignored by the metal detector, while still detecting gold, silver, copper and other non-ferrous metals. The higher the control is set, the more objects will be ignored.
Be careful not to set it too high though, as you may find yourself rejecting good targets. For example when the control is set at maximum only the most conductive targets, copper and silver, will be detected. As gold jewellery is usually alloyed with a lower quality metal it would be rejected in this case.
With experience you will learn the best place to set your discrimination control. When starting out we recommend you set it reasonably low, as it is better to dig a few trash items than to risk ignoring potentially valuable targets.