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4.2 Room Speaker
The speaker must be installed out of the patient vicinity in order to not disturb the environment, to
give access to the FE for maintenance operations and to medical staff to adjust the tone signal
level and be able to see the power LED indicator.
4.3 Room Lighting
Requirement for lighting concern the following, general, light–technique characteristics:
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Illuminator level.
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Lighting distribution.
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Preventing the operator from being dazzled by the light (by direct light sources or by reflection
on bright objects).
The Illumination level must be compliant with established lighting technical rules and be as
constant as possible.
Technical room, operating room and control room shall be provided with appropriate lighting in the
maintenance area (maintenance area to be considered are service workplaces). It corresponds to
service areas as defined for any of the product components.
The minimum required average luminance Em shall be of 500Lx and minimum color rendering
factor Ra of 80 as per IEC/EN 12464-1 (Light and lighting. Lighting of work places. Indoor work
Chapter 3 Physical Requirements of room
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Illustration 3-14: TNS scheme
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Direction 5177951-4-1EN, Revision 1
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