Olympus Sonic 1200S/HR, Руководство пользователя

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Applications 67
4. Press the RCVR menu key, then the DISPLAY menu soft key, and rotate the SmartKnob™
to select HALF-. Observe the signals and select “+” or “-” depending upon best signal
display.
5. Adjust Delay by pressing the RANGE menu key, then the DELAY menu soft key , and
rotate the SmartKnob™ to line up the leading edge of the first echo on the #2 graticule
line.
6. Adjust Gain by pressing the RANGE menu key, then GAIN menu soft key , and rotate the
SmartKnob™ to increase the first echo amplitude to approximately 80% of full screen
height (refer to
Figure 5-1 ).
7. Move the transducer to the thickest (0.500) step. Adjust the Velocity by pressing the
RANGE menu key, the VEL
menu soft key , and rotate the SmartKnob™ to line up the
leading edge of the first echo on the last graticule line (refer to Figure 5-2).
8. Repeat steps 3 - 8 to verify that both the 0.100 and 0.500 inch signals line up.
9. Check the 0.200, 0.300 and 0.400 inch steps. If they line up, the Sonic
®
1200S/HR is
calibrated. If they do not line up closely, repeat calibration steps 4 - 8.
10. The instrument should now be calibrated for 0.500 inches of steel across the full screen
width. Each major graticule division corresponds to 0.050 inches of steel. For other ranges
and materials, the Sonic
®
1200S/HR is calibrated similarly. Use step blocks made of the
same test material and thickness range as the material being measured.
Figure 5-1: Multiple Echoes From 0.100 Step and Figure 5-2: Echo From 0.500 Step
Block