DMTA-10022-01EN, Rev. C, January 2015
Chapter 12
208
12.10 Resolving Measurement Problems
Table 16 Measurement troubleshooting
Symptom
Possible explanation
No echoes or weak echoes,
and no measurement (LOS)
•
There is insufficient couplant, especially on
rough or curved surfaces.
•
The gain is set too low.
•
The material is too attenuating, or the surfaces
are unparalleled or too rough.
•
The gage requires service; try the master reset.
•
The echo is too low in amplitude to be
detected. Try increasing the gain.
Strong echoes, no
measurements
•
The echo may be in a blank area of the
waveform, and cannot be detected.
•
The echo is outside of the echo window.
Strong echoes, incorrect
measurements
•
Out of calibration; perform calibration.
•
Differential
mode — check
DIFF
flag.
•
Min
or
Max
Minimum, Maximum, or Min/Max Thickness
Mode” on page 129.
•
The material is too grainy, has flaws,
inclusions or laminations, or very high surface
noise; try manual gain adjustment or
extended blank.
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...
