Dakota Ultrasonics DFX-7 plus MANUAL2 - Manual (Page 82)

Dakota Ultrasonics
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4) Alternatively, press the ENTER key to display the Digits Edit Box.
5) Press the UP and DOWN arrow keys to scroll the highlighted value.
6) Press the LEFT and RIGHT arrow keys to scroll the digit locations.
7) Repeat steps 5 & 6 until the Gain value is correctly displayed.
8) Press the OK key to set the Gain and return to the menu screen, or ESC to
cancel entering the Gain.
9) Finally, press the MEAS key to return to the measurement screen and
begin taking readings.