Adding Dac Points; Multiple Dac Curves - GE USM 36 Series Technical Reference And Operating Manual

Distance-amplitude correction (DAC)

Adding DAC points

You can add individual DAC points at any time.
– Select the function group EDIT. The function POINT
is automatically set to NEW in order to define a new
DAC point.
– Select the function POINT GAIN and vary the gain
value of the new point.
– Select the function POINT POS. and change the po-
sition of the point.
– Finally, select the function ENTER to store the new
DAC point. The changed DAC is now displayed in the
A-scan.
USM 36

Multiple DAC curves

You can activate multiple DAC curves and, at the same
time, define the offsets between the multiple curves and
the recording curve.
The offset 0.0 dB only represents the recording curve.
Every setting varying from 0 produces four other curves
with the corresponding dB offset between them.
For better distinction, the recording curve is shown in
bold with multiple DAC curves.
You can use fixed offsets for all curves. In this case, the
adjustment range is 0 ... 12 dB in steps of 0.5 dB.
Issue 2 (12/2013)
5 Operation
5-99