nalanda MD030, User Manual

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9
Fig.11
b) Let the 25
￠
silver coin approach the search coil slowly, when it is in the
position of about 6”,the strength cursor begins to appear and turns stronger, the
sound turns louder. Continue let the 25
￠
silver coin approach the search coil, till
the strength cursor is full-scale lighted, the sound is more louder, then the depth
cursor denotes the depth dropping.(See Fig.12)
Fig.12
c) Maintain the position of the silver coin, release the PINPOINT button. Press the
PINPOINT button again after several seconds, the lower cursor is extinguished,
and the sound comes back to the initial state, the depth indication comes back to
the full scale.
d) Let the silver coin move to the center of the search coil again slowly, the lower
cursor appears again and increases, the sound turns louder again, the depth cursor
goes lower again, which means the metal target is closer to the center of the
search coil.
e) Repeat the above procedures for several times, till the silver coin is closer to the
search coil center. When moving the silver coin, the cursor and sound no longer
change. Up to now, you have had a “PINPOINT” operation completed.
Done this step, you have an initial familiarity to the detector, and you can begin
the next step of basic operation.
BASIC OPERATION
Metal detector is used outdoors. There are too many kinds of metals indoors, and
all kinds of electrical equipment that will bring interference signals. So, it is not fit for
using the detector indoors.
Field detection is more complicated, the composition of the regional soil, the
component, size, shape and the oxidation degree of the underground metals will all
affect the detection results. This chapter is only the general steps of the field detection.