Ambient Lighting; Objects, Surfaces And Reflections - Danish Interpretation Systems DCS 6000 User Manual

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depends on the mounting height and angle of the
radiator.
Figure 3.3-C The radiator mounted at 15° to the ceiling
Figure 3.3-D The radiator mounted at 45° to the ceiling
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User Manual DCS 6000 Digital IR System rev H.docx
Figure 3.3-E The radiator mounted perpendicular (at 90°) to
the ceiling
The DCS 6000 Digital IR system is practically
3.3.3

Ambient lighting

immune for the effect of ambient lighting.
Fluorescent lamps (with or without electronic
ballast or dimming facility), such as TL lamps or
energy saving lamps give no problems with the
DCS 6000 Digital IR system. Also sunlight and
artificial lighting with incandescent or halogen
lamps up to 1000 lux give no problems with the
DCS 6000 Digital IR system.
When high levels of artificial lighting with
incandescent or halogen
spotlights or stage lighting are applied, you
should directly point a radiator at the receivers
in order to ensure reliable transmission. For
venues containing large, unscreened windows,
you must plan on using additional radiators.
For events taking place in the open air a site test
will be required in order to determine the
required amount of radiators. With sufficient
radiators installed, the receivers will work
without errors, even in bright sunlight.
3.3.4 Objects, surfaces and
The presence of objects in a conference venue
reflections
can influence the distribution of infra-red light.
The texture and colour of the objects, walls and
ceilings also plays an important role.
Infra-red radiation is reflected from almost all
surfaces. As is the case with visible light, smooth,
bright or shiny surfaces reflect well. Dark or
rough surfaces absorb large proportions of the
infra-red signal (see Figure 3.3-F). With few
exceptions it cannot pass through materials that
are opaque to visible light.
User Manual
lamps, such as