Williams Sound SoundPlus Infrared System WIR SYS 90V Installationsanleitung PDF herunterladen (Seite 4)

Williams Sound

Helping People Hear

SYSTEM OVERVIEW

The Williams Sound SoundPlus

™

Infrared Listening System consists of a MOD 232

Modulator(s) and one or more TX9 Emitters which use invisible infrared (IR) light to

broadcast speech or music to wireless infrared receivers.

The MOD 232 is a two-channel modulator with four selectable frequencies. It accepts two

mic or line-level inputs and sends 2.3, 2.8, 3.3, or 3.8 MHz frequency synthesized signals to

the TX9 Emitter via coaxial cable (a second MOD 232 Modulator can be added via coaxial

cable for four-channel application). The emitter transmits invisible infrared light into the

listening area. Infrared receivers detect the transmission and convert the light signals back

into audio signals. The high frequency 2.3-3.8 MHz carrier frequencies minimize

interference problems from high efficiency lighting.

The system is designed to transmit high quality audio for hearing assistance and language

translation applications. Because the system uses infrared light for transmission, it is not

affected by interference from radio equipment and does not interfere with radio equipment.

No FCC license or radio approval is required.

The TX9 Emitter is designed to distribute its power equally among the channels sent to it for

transmission. When two channels are present, the TX9 divides its power equally among the

two signals to achieve a coverage area of approximately 18,000 square feet (1,700 square

meters). When four signals are sent to the TX9 (which can occur when two MOD 232

Modulators are connected via coaxial cable), the TX9 divides its power equally among the

four signals. This makes for a practical coverage area of about 11,000 square feet (1,022

square meters). Larger areas can be covered with additional emitters. Coverage area will

vary depending on the sensitivity of the infrared receiver being used and reflections and

absorption of the IR signal in the listening area.

The system can be used with microphones as a stand-alone system, or can be connected to

other sound equipment. Infrared systems generally cannot be used in direct sunlight because

of sunlight’s large amount of interfering infrared light.

Note: This equipment has been tested and found to comply with the limits for a

Class A digital device, pursuant to part 15 of the FCC Rules. These limits are

designed to provide reasonable protection against harmful interference when the

equipment is operated in a commercial environment. This equipment generates,

uses, and can radiate radio frequency energy and, if not installed and used in

accordance with the instruction manual, may cause harmful interference to radio

communications. Operation of this equipment in a residential area is likely to

cause harmful interference in which case the user will be required to correct the

interference at his own expense.

1 2 3 4 5 6 7 8 9 ... 35 36

Keine Kommentare

Williams Sound SoundPlus Infrared System WIR SYS 90V Installationsanleitung Seite 4