Dakota Ultrasonics CMX DL plus - Manual (Page 97)

CMX
DL+
High Performance Material & Coating Thickness Gauge
93
at point (C) in the incorrect diagram, to point (B) in the correct diagram. If we adjust
the GATE2 hold-off further to the right of the first reflection, the ring down noise from
the first back wall echo no longer interferes with the true detection (D), shown in the
correct diagram.
The adjustment considerations in the example above will typically be used for all thru
paint applications respectively. In some applications the hold -off may be sufficient,
while a gain (AGC) or thresholds adjustment will solve the problem. A similar
process of elimination should be considered for all thru paint applications.