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to overload than the 8- or 10 1/2-inch coils.
8. Most silver rings will give a high tone. Most gold
rings will fall into the pull tab/foil mid-tone category.
This is due to the unavoidable fact that most gold
rings are conductively similar to aluminum foil and
pull tabs. Some are more closely identical to the
U.S. 5-cent piece; however, the CZ-20 does have
the unique ability to separate those signals from the
aluminum trash signals.
9. Now increase the DISC control to “1.” You will
find that the CZ-20 rejects the small, iron targets and
no longer responds with an audio tone.
10. Continue to increase your DISC control, noting
that with each successive step up you reject more
and more targets. At DISC = “4” for example, you
are in a “coins-only’ mode, ignoring iron, tabs and
foil while accepting U.S. coins.
11. Use the target I.D. decal on the left underside
of your control housing graphically displays which
items are rejected and accepted at each DISC
level. For example, “foil” is placed between DISC
= “2” and DISC = “ 3.” This means that foil is accepted
at “2” and rejected at “3.”
12. You may expect varying signals over different
Typical CZ-20 Audio Responses
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