Williams Sound Tablet Accessory CHG3512 Manual De Usuario

Determine the coverage area needed for the seating area. When using the WIR TX90 transmitter with the RX22-4 receiver, in 
single channel mode, the WIR TX90 can achieve a coverage area of 28,000 ft2 (2,600 m2). In four channel mode, the WIR 
TX90 divides its power among the four signals to achieve a coverage area of 11,000 ft2 (1,022 m2).

NOTE:  The coverage area will vary depending on the sensitivity of the infrared receiver being used. The following 

diagram illustrates coverage area when using a RX22-4, RX15-2, or RX18 receiver with a single WIR TX90 
transmitter in single channel mode.

0

0

-10
-20
-30
-40
-50
-60
-70
-80
-90

10

20

30

40

50

60

70

80

90

10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160

RX22-4 RECEIVER

RX18 RECEIVER

RX15-2 RECEIVER

A136

These patterns are the direct radiation pattern. The infrared radiation does not drop to zero outside the illustrated patterns; it 
decreases. It still may be useable at a greater distance, depending on the receiver sensitivity and the reflective characteristics of 
the room.

Reflections of the infrared light from walls, ceilings, and floors may change these patterns.

Remember: opaque objects block infrared light. Thus, the transmitter cannot be concealed behind opaque walls, curtains, etc.

4

MAN 119H