Dakota Ultrasonics DFX-7 plus MANUAL2 - Manual (Page 156)

Dakota Ultrasonics
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A user might not have a current requirement to store measurements, but a file is
currently open or active and needs to be closed. The following procedures outline
how to close an open or active file:
Closing an Active File
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.
2) Use the UP and DOWN arrow keys to scroll through the sub menu items
until CLOSE is highlighted.