Dakota Ultrasonics DFX-8 plus MANUAL1 - Manual (Page 41)

DFX-8 Series Ultrasonic Flaw Detectors
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1) Press the UP and DOWN arrow keys multiple times on the left button
wheel until THRESHOLD1 is highlighted, followed by pressing the
LEFT and RIGHT arrow keys multiple times using the left button wheel to
scroll the value. When the correct threshold level is displayed, proceed to
the next menu item setting.
2) Alternatively, press the ENTER key to display the Digits Edit Box.
3) Press the UP and DOWN arrow keys multiple times on the left button
wheel to scroll the highlighted value.
4) Press the LEFT and RIGHT arrow keys multiple times using the left
button wheel to scroll the digit locations.
5) Repeat steps 3 & 4 until the threshold level is correctly displayed.
6) Press the OK key to set the THRESHOLD1 level and return to the menu
screen, or ESC to cancel entering the THRESHOLD1 level.
Note: This sets the overall sensitivity level of the gate which is the threshold.
Select Gate Polarity
1) Use the UP and DOWN arrow keys multiple times on the left button
wheel to scroll through the sub menu items until POLARITY1 is highlighted.
2) Press the LEFT and RIGHT arrow keys multiple times using the left
button wheel to toggle the POLARITY feature positive or negative.
3) Press the MEAS key to return to the measurement screen.
Note: The GATE1 and WIDTH1 values can now be adjusted or tuned directly
from the Hot Menus on the main measurement screen.
Note: Sets where the detection will occur, on the negative or positive going
echoes.