DMTA-10022-01EN, Rev. C, January 2015
Custom Setups for Single Element Transducers
179
10.8.1
Detection of Echo 1 and Echo 2
It is possible to select the detection polarity (positive or negative) for the first and
second echoes. Depending on the measurement mode and on the type of test material,
the maximum amplitude in an echo can be either a positive or negative peak. Positive
and negative polarity refer to processed echoes displayed on the waveform display
(see Figure 10-13 on page 179). To measure thicknesses with the highest accuracy, it is
important for the 45MG to detect the maximum amplitude peak in an echo.
Figure 10-13 Negative and positive echo detection examples
Refer to Table 12 on page 180 for assistance in selecting the appropriate detection
polarity for a given application.
Negative maximum peak
Negative detection of a steel-air interface
Positive detection of a plastic-steel interface
Positive maximum peak
Summary of Contents for 45MG
Page 8: ...DMTA 10022 01EN Rev C January 2015 Table of Contents viii List of Tables 227 Index 229...
Page 26: ...DMTA 10022 01EN Rev C January 2015 Introduction 16...
Page 36: ...DMTA 10022 01EN Rev C January 2015 Chapter 1 26...
Page 42: ...DMTA 10022 01EN Rev C January 2015 Chapter 2 32...
Page 136: ...DMTA 10022 01EN Rev C January 2015 Chapter 6 126...
Page 150: ...DMTA 10022 01EN Rev C January 2015 Chapter 7 140...
Page 157: ...DMTA 10022 01EN Rev C January 2015 Configuring the Instrument 147 Figure 8 3 The COMM screen...
Page 158: ...DMTA 10022 01EN Rev C January 2015 Chapter 8 148...
Page 196: ...DMTA 10022 01EN Rev C January 2015 Chapter 10 186...
Page 208: ...DMTA 10022 01EN Rev C January 2015 Chapter 11 198...
Page 226: ...DMTA 10022 01EN Rev C January 2015 Appendix A 216...
Page 232: ...DMTA 10022 01EN Rev C January 2015 Appendix C 222...
