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active.
- When complete press the key next to FINISH and follow the on-screen
prompts to exit the DAC program.
Note that stored DAC curve points can be edited as described in next section.
Editing DAC Curve
After reference points are recorded, their values may be manually adjusted, or
some points may be manually deleted. To edit or delete points:
- With the DAC menu accessed, select EDIT submenu.
- Press the function key next to the EDIT function. Continue to press the
function key or turn the knob to start the EDIT process. When DAC EDIT
process is triggered,
“
DAC
”
and a digit number appear indicating the
point index on the top right corner of the display.
- Press
or
to select the point to edit.
- To adjust a point
’
s height-Press the function key next to the ADJUST
function. Turn the knob clockwise or anticlockwise to adjust the point
’
s
echo height.
- To delete a point
–
Press the function key next to the DELETE function.
Continue to press the function key or turn the knob to delete that point
from the DAC records.
- When complete press the function key corresponding to FINISH and
follow the on-screen prompts to finish the editing.
Creating DAC Offset Curves
When operating with DAC turned on, three DAC curves including RL, SL and EL
are typically displayed. The three curves can be offset from the original DAC
curve (ML) by a user-inputted amount.
- Select the function DAC-RL
(or DAC-SL, DAC-EL) located
in the OFFSET submenu.
- Change the offset value by
means of the knob.
The offset range from -50dB to 50dB.
Specifying the DAC Reference Curve
Once the DAC curve is recorded and displayed (by turning DAC DISP on),
echoes are automatically compared to the size reference curve, which can be
specified in the SIZE REF selection. The options include RL, SL, EL, and ML.
The dB equivalent height of the signal above or below the corresponding DAC
Reference Curve amplitude is displayed as a comparison result.
NDTzone • Non-Destructive Testing Equipment Specialists
Tel.: +1.877.363.4243 • eMail: [email protected] • Web: www.NDTzone.com
