Bosch INT-TX04, Operation Manual, Page: 27 / 94

Figure 4.11: Infrared signal not blocked by a person in front of the participant
The figures below illustrate how infrared radiation can be directed to conference participants.
In figure 4.12, the participant is situated clear from obstacles and walls, so a combination of
direct and diffused radiation can be received. Figure 4.13 shows the signal being reflected
from a number of surfaces to the participant.
Figure 4.12: Combination of direct and reflected radiation
Figure 4.13: Combination of several reflected signals
For concentrically arranged conference rooms, centrally placed, angled radiators located high
up can cover the area very efficiently. In rooms with few or no reflecting surfaces, such as a
darkened film-projection room, the audience should be covered by direct path infrared
Language Distribution System Planning | en 27
Bosch Security Systems B.V. Operation manual 2013.11 | V1.4 |