910-269-EN, Rev. B, June 2011
142 Chapter 9
Figure 9-4 Example of a gated calibration signal
Ensure that it is the first back-wall echo being gated, not a multiple echo from the
end of the delay line tip.
10. Once a steady reading is achieved, choose 1/5 > Auto CAL > CAL Zero.
The screen freezes and the Enter Value for Zero Cal dialog box appears (see
Figure 9-2 on page 138).
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