Sirona cerec ac, Руководство по эксплуатации

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Sirona Dental Systems GmbH
Operating Instructions CEREC AC 4 Safety
4.4 Wireless phone interference with equipment
63 33 582 D3492
D3492.201.01.22.02 10.2018
17
Background Integrated circuits (logical circuits and microprocessors) are used to
implement a wide variety of functions in dental/X-ray/CAD/CAM
systems.
The circuits must be miniaturized to a very high degree in order to
include as many functions as possible on these chips. This leads to
structure thicknesses as low as a few ten thousandths of a millimeter.
It is obvious that integrated circuits which are connected to plugs
leading outside of the unit via cables are sensitive to electrostatic
discharge.
Even voltages which are imperceptible to the user can cause
breakdown of the structures, thus leading to a discharge current which
melts the chip in the affected areas. Damage to individual integrated
circuits may cause malfunction or failure of the system.
To prevent this from happening, the ESD warning label next to the plug
warns of this hazard. ESD stands for ElectroStatic Discharge.
Connector pins or sockets bearing ESD warning labels must not be
touched or interconnected without ESD protective measures.
4.4
Wireless phone interference with equipment
The use of mobile wireless phones in practice or hospital environments
must be prohibited to ensure safe operation of the unit.
4.5
Disturbance of data transmission
Note on wireless communication
Data communication between the acquisition unit and the CEREC MC
XL milling and grinding unit should preferably be established via the
wireless interface CEREC Radio Device or WLAN.
As for all wireless connections (e.g. cell phones), heavy utilization of the
available radio channels or shielding caused by building installations
(e.g. metal-shielded X-ray enclosures) may impair the quality of the
connection. This may become noticeable through a reduction in range
and/or a slower data transmission rate. In extreme cases, it will be
impossible to establish a wireless connection at all.
Sirona has selected the best possible configuration for data
communication via the wireless interface (CEREC Radio Device) or
WLAN, which generally ensures perfect functioning of this connection.
However, in individual cases unrestricted wireless data communication
may be impossible for the reasons mentioned above and/or due to local
circumstances. In such cases, a cable LAN connection should be
selected to ensure uninterrupted operation. If the only LAN interface on
the rear of the CEREC AC is occupied by another plug, remove this
wireless interface connection, and instead connect the LAN cable with
the CEREC MC XL milling and grinding unit.