DMTA-10040-01EN, Rev. E, February 2018
Using the Instrument 265
Figure 5‑201 GAIN adjustment in FREQ 2
7. Press the FREEZE key ( ) to enable signal acquisition.
8. Place the probe in a defect-free area of the calibration standard near the thru-wall
flaw, and then press the NULL foot switch.
9. Scan the entire length of the tube, and verify that the thru-wall flaw is vertical and
the support ring signal is not clipped. Adjust as required (see Figure 5-202 on
page 265).
Figure 5‑202 Verification signal in FREQ 2