Waygate Technologies Krautkramer USM 10, Operating Manual

Page: 108 / 242

5 Operation Gain
108 Rev. - (09/2021) Krautkrämer USM 100
Transfer Correction
If the test object has a rough surface, part of the incident
sound energy will be scattered at its surface and is not
available for the test. The larger this initial scattering, the
smaller the flaw echoes appear, and the more errors oc-
cur in the evaluation result.
It is therefore important to take the effect of the test ob-
ject’s surfaces on the height of the echo into account.
You can determine the value for the transfer correction
by experiment. For more details on this, please read the
corresponding technical literature of the national train-
ing centers for nondestructive testing.
Custom Gain Step
You can define the dB increment of the highest level se-
lectable in the function
Gain Step (see page 107).
Auto XX Amplitude
You can set the desired screen height (default = 80%)
for the echo amplitude, when using the
AutoXX function
(see page 66).
Offline Gain
The Offline Gain value is applied to a frozen B-scan or
C-scan image.