19
In order to prevent errors of the direction coordination, a visual
noticeable tag should be placed on the magnetic tape surface, e .g .
as is shown in Fig. 8 to make a “start” point by a felt-tip pen at
the beginning of the magnetic tape .
The magnetic carrier should be demagnetized as described in paragraph
2.2.2.3 of Regula 7505M User’s Guide. The demagnetizer must be moved
from left to right relative to the “start” point (see Fig . 8a) .
The demagnetized magnetic tape is placed on the examined
surface without overturns, i.e. so that the “start” point is always at
the left edge .
When carrying out magnetographing the demagnetizer is also
moved from left to right relative to the “start” point (see Fig . 8b) .
And the scanner body must be placed in the way that the direction of
the arrow with the symbol indicating the type of examined materials
and the direction of the preliminary demagnetization are the same,
i .e . from left to right .
Note:
If the device and Regula model 7505 are not delivered together,
the demagnetizer may exchange the polarity. In this case when
carrying out scanning, turn over the tape before placing it on
the object (“start” point to the right edge) .
Magnetic copy:
Put the magnetic tape on the prepared number area
of a vehicle and fix its end on the examined surface by
a magnetic clamp, adhesive tape or manually (try to avoid
skewness and shifts relative to the examined number);
Fix the other end of the magnetic tape stripe in the same
way (if one end of the magnetic tape stripe is fixed firmly,
the other end may be left loose). The operator may
choose any way of the magnetic tape fixation;
Place the body of the device scanner so that the relief tag
(Fig . 5, pos . 5) in the form of an arrow is directed forward
in the scanning direction (Fig . 8b) . Put the scanner on
the fixed stripe of the magnetic tape, make sure they
have a tight contact with the examined surface .
Switch on the power supply of the device controller with
the button (Fig . 3, pos . 3), make sure the green LED
glows (Fig. 3, pos. 4). If necessary, hold down the button
to choose the required power mode (for Fe-scanner only).
The number of flashes is in proportion to the set power
level of Fe-scanner;
Move the scanner slightly pressing it to the surface from
the beginning of the examined fragment to the end .
The speed of scanning should not exceed 50 mm/s .