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4. Conduct an analysis of the generated spectrum
dark segments
correspond
to the frequency
components of valid
(continuous) signal
Frequencies where light segments prevail over the dark ones, are the most likely the
interference frequencies that should be suppressed by pass band filter
5. Turn on the filter by pressing
the frequency button
symbol of low frequencies
suppressing will appear on the
display
8. Using the buttons ◄/►
decrease the frequency of the
«cut-off»
as it is not detrimental to the
intelligibility of the sound in the
headphones.
Leak point usually corresponds to a point where valid
signal level is the highest.(fig.4.2).
If the same intensity of the signal level is observed at a
distance of 2 to 5 m, then the leak point is located in the
middle of such a segment.
11. Mark the suspected leak location.
12. Turn off the device
6. Using the buttons ◄/►
increase the frequency of the
. A
lower «cut-off»
long as it is not detrimental to
the intelligibility of the sound
in the headphones
9. Check the filtered signal
quality shown in the Spectrum
graph (see p. 4). Highest
as long
number of black stripes (valid
signal)
of light stripes (interference)
signifies correct choice of filter
as
and lowest number
11
light to the frequency
components of accidental
interference
7.
Press
the
button
. A symbol of higher
frequencies will appear on the
display
10. Switch to Scale mode
by pressing visual indication
button
. Without changing
the settings, examine the
suspected leak area as
described above in sections
3.2 paragraphs 5-8
frequency
Fig.4.2
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