Checkline DFX-7 - Manual (Page 116)

Dakota Ultrasonics
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3) Press the ENTER key to display the File List Box.
4) Use the UP and DOWN arrow keys to scroll through the stored Files until
the target File to delete is highlighted.
5) Press the OK key to delete the File.
6) Press the MEAS key to return to the measurement screen.
Deleting All Data
1) Press the MENU key once to activate the menu items tab. Press the MENU
key multiple times to tab right and the ESC key multiple times to tab left until
the DATA menu is highlighted and displaying the submenu items.