Dac Mode - Epson USN 52R Operating Manual

Operation

DAC mode

– Peak the echo of an assumed flaw and shift the gate
so that the echo data are evaluated.
– You can read the sound path in the measurement line
and, in addition with angle-beam probes, the
(reduced) projection distance and the flaw depth.
You can immediately see from the A-scan whether or
not the echo has to be recorded.
The recording threshold violations in dB can also be
easily determined:
– Adjust the gate threshold exactly to the point of
intersection of the curve with the assumed flaw
indication.
The enlarged reading in the A-scan indicates the
amount of dB by which the flaw echo exceeds the
curve, i.e. the amount by which the echo indication
exceeds the reference echo.
5-32 Issue 05, 02/00
Echo evaluation with DAC/TCG
Krautkramer USN 52R/USN 52L