DMTA-10040-01EN, Rev. E, February 2018
Using the Instrument 269
2. Place the probe in a defect-free area near the thru-wall flaw, and then press the
NULL foot switch.
3. Scan the tube for defects (see Figure 5-206 on page 269).
When lowering the LO PASS filter, you must also lower the scan rate by the same
amount as applied to the filter.
Figure 5‑206 A scan with 10 Hz LO PASS filter (left); with scan rate too fast (right)
5.4.3.3 Using the ALL-IN-1 Display
This section shows you how to use ALL‑IN‑1 to display the small cluster of four
corrosion pits under the support ring and the corrosion pit near (but not underneath)
the support ring.
To use the ALL-IN-1 display
1. Press the DISP menu key ( ), followed by DSP MODE (display mode, A key),
and then rotate the knob until ALL‑IN‑1 is displayed.
2. Press the DISP menu key ( ) twice, followed by FRQ2 DSP (frequency 2
display, A key), and then rotate the knob until AUTO Y is displayed.