5 FC1: Operation for Legally Relevant Functionalities
5.1.1 Keys
There are 2 function keys located directly below the touch screen. Pressing
one of these keys activates the corresponding display button that is indi-
cated directly above.
The navigation buttons (up, down, left, right, enter) are intended for navi-
gation within the device software's menu as an alternative to an operation
via the touch screen.
Figure 6: Navigation keys
up
down
left
right
enter
5.1.2 Touch Screen
All key operations can alternatively be executed from the touch screen. An
acoustic signal indicates that an operating action has taken place.
5.1.3 Security Switch
The security switch is a sealable rotary switch, which is located on the front
panel. It is closed by turning it clockwise as far as it will go.
The security switch is part of the enCore user rights limitation concept.
A closed security switch prevents certain user actions that affect the legally
relevant functions of the device (e.g. modifications of legally relevant para-
meters or download of legally relevant software).
Note: There are legally relevant parameters that can be changed by a user
even if the security switch is closed. In that case, the action is recorded in
the Fiscal Audit Trail (cf. page 43).
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