Fisher M-Scope 1212-X Operating Manual page 8

DISCRIMINATION POINTS
NOTE:
The discriination levels shown are typical values only and may
vary from detector to detector.
Figure 4. Typical 1212-X audio responses over 1-inch deep targets with search coil
sweeping 2 to 3 inches above ground.
you do. With a little practice, however, you will be
able to tell the difference between a large target
and a small coin-sized object.
7. Figure 4 shows some different responses you
may expect at different levels of discrimination.
Note that as you increase the discrimination level,
you progressively eliminate more targets including
some good ones, such as nickels and gold rings.
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