DMTA-10045-01EN, Rev. E, August 2016
Chapter 6
170
a) Prioritize negative peaks over positive peaks.
b) In case you have multiple peaks, prioritize the first (left) peak over the peaks
on the right side.
c) When in doubt, repeat the frequency selection steps and ensure that you
maintain a constant pressure on the probe. If your results were unsatisfactory,
this might have been because you did not hold the probe properly.
d) The use of a probe holder is NOT recommended because it can impact the
mechanical impedance of the area being scanned.
Figure 6‑65 Selecting the best operating frequency
7. When you have obtained a satisfactory frequency, press DONE (E key).
To calibrate the signals
1. With the frequency properly selected, place the probe on a defect-free portion of
the standard and then press the CAL NULL key ( ).
To Next Page
Loading...
