ACS A1214 Expert, Operation Manual, Page: 23 / 64

Ultrasonic flaw detector А1214 EXPERT
Operation Manual
23
ACOUSTIC
CONTROL
SYSTEMS
Figure 16
2
2.3.1.4.1 Configuration of amplitude cor-
rection – TCG
The instrument uses the TCG function to balance
the amplitudes of the echo-signals from similar reflec-
tors, located at various levels of depth.
The screen when setting the TCG parameters with
the switched On reference level and multilevel strobe
is presented in the Figure 16.
The reference sample of the material for which a
size of the reference reflectors is set – the nearest and
the distant (for that purpose the notches are used. The
signal is detected using these notches by means of the
direct or once reflected beam) is required for adjust-
ment of TCG.
The names of the TCG parameters and their per-
missible values are presented in the Table 9.
Table 9
Parameter name Value Description
Type of the amplitude
correction
TCG TCG was selected in the function of amplitude correction
- DGS – an amplitude distance correction. Graphical representation of dependence between the amplitude of the reflected
signal and the depth of the discontinuity location considering its size.
- DAC – distance-amplitude-correction. A curve line connecting the peak values of echo-signals from similar reflectors,
located at various levels of depth.
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