21
Take the magnetic tape with the copy off the examined
object and disconnect the clamps . When executing
the given operation avoid any contact of the magnetic
clamps and the scanner with the magnetic tape surface
in the area of the magnetic copy execution. Otherwise
the magnetic copy can be partially demagnetized and
“unnecessary” elements of magnetization (spots or
stripes unrelated to the examined object) may appear in
it, that can complicate the following examinations;
Stitch the magnetogs in the USB device for magneto-
optical visualization of complex Regula 7505M
Put the magnetic copy into the corresponding compartment
of the magnetic tapes case (the compartment for
non-examined magnetic copies is red marked) . If it is
necessary, a comment can be applied on the magnetic
copy with a marker from the device set
If the operative examination of the magnetic copy
is impossible (e .g . due to lack of the visualization device),
make 1-2 safety magnetic copies more.
Choosing the optimal level of magnetographing power
The level of magnetographing power is regulated by holding
the control button on the controller and is indicated by the number
of flashes of the power indicator. For the Fe-scanners the level of
examined object magnetization is additionally regulated with a
flywheel being a part of the magnetizing attachment (Fig. 5, pos. 9).
The flywheel is used to smoothly change magnetic field strength in
the gap between the polar tips (Fig .5, pos . 8) .
Changing the level of the Fe-scanner power (Fig . 11) causes
changes in the ratio of signal to noise (visibility of digit contours
against the surrounding pattern-noise) . It should be noted that
the visibility of digit contours is better in Fig. 11b as the data are
more complete and detailed .
ATTENTION!
THE OPTIMAL POWER LEVEL IS BEING SELECTED BY
EXPERIMENT FOR EVERY EXAMINED OBJECT, FOR ITS
MAGNETIZING SYSTEM AND THE RECORDING SCANNER
ACCORDING TO THE BEST VISIBILITY OF EXAMINED
INHOMOGENEITIES .
