DMTA-10055-01EN, Rev. A, February 2015
Chapter 11
240
Figure 11-13 Completed custom DAC
Once the custom DAC curve points have been captured and completed, you have full
capability to toggle between DAC and TCG views, to manipulate
Range
,
Delay
,
CAL
Zero
, and
Angle
, and also to add necessary scanning gain, curve gain adjustment or
transfer correction. The TCG view of any custom DAC curve includes the user-
defined reference curves as well as the primary DAC curve. Custom DAC curve also
incorporates the reference correction functionality, if desired.
11.3 DGS/AVG
The Onboard DGS/AVG option in the EPOCH 650 ultrasonic flaw detector permits
complete DGS/AVG setups to be performed on the instrument. With the DGS/AVG
method, you can size defects based upon a calculated DGS/AVG curve for a given
transducer, material, and reflector size. This method requires that you only have one
reference-reflector in order to create a DGS curve for flaw sizing. This is much
different than the DAC or TCG method which requires that you have representative
defects at various depths within a part in order to create a curve for flaw sizing.
Summary of Contents for EPOCH 650
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