Dakota Ultrasonics DFX-8 plus MANUAL2 - Manual (Page 88)

Dakota Ultrasonics
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2) Press the UP and DOWN arrow keys multiple times using the left button
wheel to scroll through the sub menu items until THRESHOLD1 is
highlighted.
3) Press the LEFT and RIGHT arrow keys multiple times using the left
button wheel to scroll the value. When the correct threshold is being
displayed, proceed to step 8.
4) Alternatively, press the ENTER key to display the Digits Edit Box.
5) Press the UP and DOWN arrow keys multiple times using the left
button wheel to scroll the highlighted value.
6) Press the LEFT and RIGHT arrow keys multiple times using the left
button wheel to scroll the digit locations.
7) Repeat steps 5 & 6 until the Threshold number is correctly displayed.
8) Press the OK key to set the Threshold and return to the menu screen, or
ESC to cancel entering the Threshold.
9) Repeat steps 1-8 to set any additional Threshold levels.
10) Finally, press the MEAS key to return to the measurement screen and
begin taking readings.