DMTA-10004-01EN, Rev. D, November 2016
Chapter 3
40
The waveform trace, called the A-scan, allows a skilled operator to verify that the
signal used to make a thickness measurement is the correct back-wall echo and not
noise, material anomaly, or the second multiple echo. The A-scan can also allow you
to observe indications that may be too small to be measured by the instrument.
The ID bar, located at the top of the measurement screen, contains the ID for the actual
thickness measurement location, the previously stored value, and comment notes
indicators (see Figure 3-2 on page 40). The download indicator ( ) appears when the
previously stored thickness measurement comes from a file rather than from a newly
acquired value.
Figure 3
‑
2 The ID bar
The external microSD memory card indicator appears in the top-right corner of the
screen when a microSD memory card is inserted in its slot under the I/O door on the
right side of the instrument (see Figure 1-5 on page 25). The 38DL PLUS recognizes an
external microSD memory card when you start the instrument.
Depending on the context and on the available functions and options, various
indicators and numeric values appear around the waveform display and around the
main measurement value (see Figure 3-3 on page 41). A help text bar, at the bottom of
the screen, indicates the keys that you can use to navigate and make a selection in the
menu structure.
ID number
External microSD
memory card indicator
Comment notes
Previously stored thickness value
Download indicator
Summary of Contents for 38DL PLUS
Page 9: ...DMTA 10004 01EN Rev D November 2016 Table of Contents ix Index 297 ...
Page 10: ...DMTA 10004 01EN Rev D November 2016 Table of Contents x ...
Page 28: ...DMTA 10004 01EN Rev D November 2016 Important Information Please Read Before Use 16 ...
Page 30: ...DMTA 10004 01EN Rev D November 2016 Introduction 18 ...
Page 50: ...DMTA 10004 01EN Rev D November 2016 Chapter 2 38 ...
Page 60: ...DMTA 10004 01EN Rev D November 2016 Chapter 3 48 ...
Page 102: ...DMTA 10004 01EN Rev D November 2016 Chapter 6 90 ...
Page 222: ...DMTA 10004 01EN Rev D November 2016 Chapter 11 210 ...
Page 254: ...DMTA 10004 01EN Rev D November 2016 Chapter 13 242 ...
Page 274: ...DMTA 10004 01EN Rev D November 2016 Chapter 14 262 ...
Page 286: ...DMTA 10004 01EN Rev D November 2016 Chapter 15 274 ...
Page 294: ...DMTA 10004 01EN Rev D November 2016 Appendix A 282 ...
Page 300: ...DMTA 10004 01EN Rev D November 2016 Appendix C 288 ...
Page 306: ...DMTA 10004 01EN Rev D November 2016 List of Figures 294 ...
