Operating Procedure to Search an Area.
CAUTION
prior to each use of the mine detector, check its
operation by setting the switch to the ON position
the search head to rest on the ground with no
movement for about thirty seconds. After this time, any
movement of the search head
cause a
switchover from search to point mode, as indicated by a
higher
rate. Set the switch to the OFF position and
Proceed as described in
paragraphs.
a.
the search head at a height of
3 inches
above the ground over homogenous
(free from known
such as
tree roots; ruts, mounds, etc.) set the switch from OFF to
ON.
This action not
power to the equipment, but
starts the
period used by the
processor to form an estimate of the background
and background
va ria tions ,
based on the
returned from the
soil.
A
be heard
in
the headset at
of
2.5
seconds,
indicating the system is operating in the SEARCH mode. These
function as
a
metronome and
make it easy to sweep the search head at the optimum sweep rate
by synchronizing sweep direction
with the
(See figure 3-1 .)
c.
keeping the search head
3 inches
above the
ground, depending upon the surface condition of the terrain, sweep the search head
from side to side at a sweep rate such as to make each change of sweep direction
(sweep end points) coincide with a metronome
(Sweep rate is
7
feet
in 2.5 seconds). With each sweep, advance a distance
of
no more than 4
inches
cm) or about
the width of the search head. (See figure 3-1 .) Ensure that
the search head is
to the ground at
times as
the search head
produce a
to a mine
Operation in the prone position is the same,
except the sweep rate is
3.5 to 4 feet (1 to
in 2.5 seconds.
3-2
Summary of Contents for 156-PMD
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