Olympus 45MG, User Manual

Page: 81 / 246

DMTA-10022-01EN, Rev. C, January 2015
Software Options 71
by an Echo-to-Echo detection bar that indicates the exact pair of back-wall echoes
used to determine the thickness (see Figure 6-3 on page 71). The echo height is
automatically adjusted to a preset level.
Figure 6-3 Measuring with the automatic Echo-to-Echo detection mode
MANUAL E-TO-E (optional and only available when Echo-to-Echo and the
Waveform options are activated)
The manual Echo-to-Echo detection mode also measures the thickness using the
time of flight between two consecutive back-wall echoes. However, the gain and
blanking parameters can also be manually adjusted in this mode. This mode is
useful when material conditions produce noisy signals that could render the
automatic mode 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 6-4 on page 72). 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
[GAIN/WAVE ADJ] , and then use the arrow keys to adjust the
EXT BLANK , the E1 BLANK , and the GAIN parameters.
Echo-to-echo
detection bar
Dual element (DE) automatic Echo-to-Echo (AEtoE)
detection mode