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3.1.5 Compensation
Owing to the different degrees of roughness of surface of the detected object and the test block
calibrating the instrument, in the practical detection, you need to increase (or decrease) the sensitivity of
instrument to reduce the influence caused by the surface of the detected object. The range of adjustment
is from -40 to +40 dB. The values used in the adjustment are related to the gain values.
On the parameter menu, press
then press
(left decrease) or
On the compensation submenu, press Ok
6.0.
3.1.6 Scale
This function enables you to adjust the display mode of the screen coordinate.
On the parameter menu, press
select the scale submenu, then press
modes.
S Sound Path: the actual distance of the sound wave from the surface of the work piece to the flaw.
X Horizontal Distance: the horizontal distance of the sound wave from the point of incidence to the
flaw.
Y Vertical Distance: the vertical distance of the sound wave from the surface of the work piece to
the flaw.
3.1.7 Reject
After you adjust to a value, the echo below the value can be cleaned. For instance, you can remove
the structural noise of the detected work piece. The reject setting is shown by % on the screen, and the
adjustment range is 0-80%.
On the parameter menu, press
to select the reject submenu, then press
You should handle this function with great caution, as it may happen that you suppress echoes from
flaws as well. In addition, some specifications expressly forbid using the reject function.
3.1.8 Wave Height Readings
Ha%
The percentage of the waveform accounting for of the screen height in windows.
dBa
The dB difference of the waveform relative gate can be shown in windows. When you use
YUSHI INSTRUMENTS
(up) or
(right increase) to adjust the values.
to adjust the steps. The steps are 0.1, 1.0, 2.0 and
to activate the function. Press
(left) or
to activate the function. Press
(left) or
8
(down) to select the compensation submenu,
(up) or
(right) to switch among various display
(up) or
(right) to adjust the values.
(down) to
(down)
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