Epson USN 52L - Manual (Page 183)

DGS-8 Issue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS
1.2 Overview of the method of
proceeding
Record a reference echo and adjust the required record-
ing level. The reference echo reflector may be disk
shaped, a side drilled hole, or a backwall. The equiva-
lent reflector size is then infinite. If a flaw echo occurs,
the amplitude may exceed the DGS curve. In that case,
the reflecting power of this natural flaw is greater than
the reflecting power of the disk-shaped reflector at the
same depth.
With a saturation over 100% and below 10%, the DGS
curve is always horizontal.
Introduction Overview of the method of proceeding
DGS-8 Issue 02, 03/99 Krautkramer USN 52R/USN 52L Option DGS
1.2 Overview of the method of
proceeding
Record a reference echo and adjust the required record-
ing level. The reference echo reflector may be disk
shaped, a side drilled hole, or a backwall. The equiva-
lent reflector size is then infinite. If a flaw echo occurs,
the amplitude may exceed the DGS curve. In that case,
the reflecting power of this natural flaw is greater than
the reflecting power of the disk-shaped reflector at the
same depth.
With a saturation over 100% and below 10%, the DGS
curve is always horizontal.
Introduction Overview of the method of proceeding