What is notch discrimination?
If setting the discrimination low so that the metal detector can find almost anything, setting a notch is like setting the discrimination so that the metal detector can detect only one target (a accept notch) or everything but one target (a reject notch). An accept notch can be used successfully if you are looking for a specific item; a known type of ring for example, but that is all the detector will respond to. Setting a reject notch to reject pull-tabs for example, will also cause the detector to ignore any items that are similar to the signal produced by a pull-tab; gold for example. Can you search deeper using notch discrimination?No, there is actually a small loss of depth when using a notch filter, but if adjusted properly, the loss is minimal. What exactly is target ID? Since every items produced an different signal; responds at a different level of discrimination, any of the manual-adjustment units can ID an item by simply adjusting the discrimination level until the item disa
