DMTA-10004-01EN, Rev. D, November 2016
Basic Operation
81
AUTO E
‑
TO
‑
E
The automatic echo-to-echo detection mode measures the thickness using the
time of flight between two consecutive back-wall echoes. Use this mode for
painted or coated materials since the time interval between consecutive back-wall
echoes excludes the time of flight through a paint, resin, or coating layer.
The
DE
‑
AEtoE
indicator appears to the left of the thickness reading. The
triangular marker is replaced by an echo-to-echo detection bar to indicate the
exact pair of back-wall echoes used to determine the thickness (see Figure 5-13 on
page 81). The echo height is automatically adjusted to a preset level.
Figure 5
‑
13 Measuring with the automatic echo
‑
to
‑
echo detection mode
MANUAL E
‑
TO
‑
E
The manual echo-to-echo detection mode also measures the thickness using the
time of flight between two consecutive back-wall echoes. In this mode, you can
however also manually adjust the gain and the blanking parameters. Use this
mode when material conditions produce noisy signals where the automatic mode
may be less effective.
The
DE
‑
MEtoE
indicator appears to the left of the thickness reading. The echo-to-
echo detection bar is similar to the automatic echo-to-echo mode but includes the
adjustable E1 blank bar that indicates the area to exclude for echo detection (see
Figure 5-14 on page 82). Following the E1 blank, the instrument detects the next
echo with an amplitude of at least 20 % of the waveform display height. In this
mode, press
[WAVE ADJ]
, and then use the arrow keys to adjust the
EXT
BLANK
, the
E1 BLANK
, and the
GAIN
parameters.
Dual element (DE)
automatic echo-to-echo
(AEtoE) detection mode
Echo-to-echo detection
bar
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 ...
