Olympus Sonic 1200S/HR, User Manual

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Applications 83
wide enough to cover the area where the 2nd back wall echo will appear (see Figure 5-13) .
Figures 5-12 and 5-13
Press GATE1 menu key and the following menu will appear. This menu provides changeable
parameters, such as Polarity, Position, Width, and Level, for either flaw or thickness
measurements of Gate1.
For thickness measurements, adjust the controls as follows.
1. To enable Gate1, press GATE1 menu key again and rotate the SmartKnob™ to select the
“+” Gate1 alarm.
2. Press the Gate LEVEL menu soft key and rotate the SmartKnob™ to the desired screen
height, such as 35%.
3. Press the Gate POSN menu soft key and rotate the SmartKnob™, or press the POSN menu
soft key repeatedly, so that the start of the gate is to the left of the thinnest step (0.200
inch). (Please refer to Figure 5-14 ) .
4. Press the Gate WIDTH menu soft key and rotate the SmartKnob™, or press the WIDTH
menu soft key repeatedly, to adjust the Gate width until it goes past or through the 1st echo
from the thinnest step (see Figure 5-15 ) .