Olympus Sonic 1200S/HR, Руководство пользователя

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Control Descriptions 49
ANGLE This control enables/disables angle beam calculations and specifies the refraction of
the sound beam into the test part (wedge angle). This control may be adjusted from 0° (OFF) to
90° in 0.1° increments. When an angle is specified, the sound path, depth, and distance
measurements are displayed simultaneously.
THICK The actual thickness of the part under inspection can be specified from 0.001 to 185.0
inches. This entry allows the microprocessor to determine which “leg” the sound beam is in
when an echo is detected, and hence correct the sound path, distance, and depth values for the
leg. This provides the operator with electronic weld soundpath calculation ability. Refer to the
T-VEL description for further THICK limits.
O-DIAM Outer diameter of the curved surface for correction of depth and distance
measurements. The outer diameter may be set to a value in the range of 0.001 inches to 185.0
inches, or it may be turned OFF for flat objects. Refer to the T-VEL description for further O-
DIAM limits.
4.18 DAC Menu
The DAC key activates the DAC menu. This menu offers controls that allow the operator to
construct and modify a DAC/Curve.
GAIN See GAIN parameter description in the Receiver menu section
DAC The DAC control selects the operating mode of the DAC circuitry. The options are
OFF, CURVONLY, 3 CURVES, 4 CURVES, JIS, DACONLY, and DAC+CURV. 3 CURVES
displays the programmed curve and the curves ±6dB above and below the programmed curve.
4 CURVES displays the programmed curve, the curves 6dB above and below the programmed
curve, and -14dB below the programmed curve. JIS displays the programmed curve, the curves
6dB above and below the programmed curve, and -12dB below the programmed curve.
CURSOR Allows a DAC cursor, a small display circle that tracks signal peaks, to be moved
back and forth across the screen to select points where DAC compensation will be calculated,
and the amplitude of the selected points will be adjusted. Repeated presses of this soft key
control will jump the cursor from one previously defined point to the next.
DAC