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YUSHI INSTRUMENTS
4.2.2 Operation Steps
The instrument requires the echo with an known sound path as the calibration wave of the incident
zero. We choose the CSK-IB test block kept flat to do the distance calibration, as shown in Figure 4-1.
1. Press
to enter the parameter menu, press
(up) or
(down) to select the sound
path submenu. Then press
(left) or
(right) to set the value as 125mm.
2. Press
(up) or
(down) to select the sound velocity submenu. Then press
(left) or
(right) to set the value as 5920m/s.
3. Put the straight beam probe on the test block and keep good coupling, at this point, five echoes appear
on the screen, as shown in Figure 4-2.
Figure 4-2
4. Set Gate A to lock the first echo. Press
to make the highest echo reach 80% of the screen. The
sound path value is displayed on the screen. If the vertical sound path is not 25mm, press
, then
press
(up) or
((down) to select the probe zero submenu. Then press
(left) or
(right)
to adjust the value till the sound path value reaches 25mm. At this point, the probe zero is calibrated, as
shown in Figure 4-3.
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