DMTA-10055-01EN, Rev. A, February 2015
Calibration
163
12. Adjust the gain so that neither signal is saturated, and so that the echo amplitude
in gate 2 is above 50 %.
A thickness measurement reading appears in large text above the A-scan, labeled
2-1
.
In attenuating materials, it might be impossible to bring the second indication above
50 % while avoiding saturation of the first signal. If this is true, try using the
Edge
detection mode instead of the peak detection to ensure accurate measurements (see
“Gate Measurement Modes” on page 126 for details).
Ensure that gate 1 and gate 2 are capturing successive back-wall echoes, not multiple
echoes from the end of the delay line tip.
Figure 9-14 Example of gated signals for velocity calibration
Thickness measurement
Содержание EPOCH 650
Страница 12: ...DMTA 10055 01EN Rev A February 2015 List of Abbreviations xii...
Страница 30: ...DMTA 10055 01EN Rev A February 2015 Introduction 18...
Страница 54: ...DMTA 10055 01EN Rev A February 2015 Chapter 1 42...
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Страница 153: ...DMTA 10055 01EN Rev A February 2015 Programmable Inputs and Outputs 141 Figure 8 1 The A Out setup page...
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Страница 332: ...DMTA 10055 01EN Rev A February 2015 Appendix B 320...
Страница 342: ...DMTA 10055 01EN Rev A February 2015 Appendix C 330...
Страница 346: ...DMTA 10055 01EN Rev A February 2015 Appendix D 334...
Страница 362: ...DMTA 10055 01EN Rev A February 2015 Index 350...
