Figure 5-13 Measuring With The Automatic Echo-To-Echo Detection Mode - Olympus 38DL PLUS User Manual

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.
Dual element (DE)
automatic echo-to-echo
(AEtoE) detection mode
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.
DMTA-10004-01EN, Rev. D, November 2016
Echo-to-echo detection
bar
Basic Operation 81