Olympus Panametrics Epoch 4 Plus, Руководство пользователя

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Using Software Options
Part # 910-250C 141
5. Press [OPTION] to exit the OPTION menu.
Figure 92 Options
When the Backwall Echo Attenuator is activated, the letters “BEA” appear at the right
side of the display. GATE 2 is automatically activated and cannot be turned off unless
BEA is turned off first.
9.14.3 Operating Backwall Echo Attenuator
Once activated, the Backwall Echo Attenuator option displays a base gain level at the
upper right corner of the live A-Scan. This base gain level displays the independent gain
within the screen range after GATE 2 START. Initially, this base gain level is activated to
show the same gain level as the primary gain control. If the primary gain control consists
of a reference gain setting and scanning dB, the base gain level of the Backwall Echo
Attenuator will be the sum of the reference and scanning gain levels.
Figure 93 Gain Levels