Bosch INTEGRUS Especificaciones descargar pdf (Pagina 15)

3. System Specification

3.1 Features and Benefits:

•Conforms to IEC 60914, the international standard for

conference systems

•Conforms to IEC 61603 part 7, the international stan-

dard for digital infra-red transmission of audio signals

for conference and similar applications

•Up to 32 digital audio channels

•Wireless transmission gives participants freedom of

movement

•Conference hall privacy; the congress venue itself acts

as a barrier to infra-red signals escaping and being

overheard, as infra-red is unable to pass through

opaque structures such as walls

•No interference between separate conference rooms,

making it possible to use an unlimited number of sys-

tems in adjacent rooms

•Transmission in 2-8 MHz frequency band, which elimi-

nates disturbance from all types of lighting systems

•Digitised audio ensures very high audio quality

•Powerful compression techniques enable efficient,

low-loss transmission

•Comprehensive error correction ensures error-free

transmission

•Synchronization with the number of channels in use

means the user does not have to scroll through unused

channels

• Quality levels are programmable per channel, giving

maximum flexibility for optimising transmission:

•Mono standard quality mode for efficient distribution

of languages

•Stereo standard quality mode for efficient distribution

of music

•Premium quality modes for distribution of very high

quality sound

3.2 Transmission Characteristics

IR transmission wavelength

:870 nm

Modulation frequency

:Carriers 0 to 5; 2 to 6 MHz,

according to IEC 60603 part 7

:Carriers 6 and 7; up to 8 MHz

Protocol and

modulation technique

: DQPSK, according to

IEC 60603 part 7

3.3 System Audio Performance

Measured from the audio input of an LBB 4502 transmitter to the

headphone output of an LBB 4540 receiver

Audio frequency response

: 20 Hz to 10 kHz (-3 dB)

at Standard Quality

20 Hz to 20 kHz (-3 dB)

at Premium Quality

Tot al harmonic distortion

at 1 kHz

:< 0.05 %

Crosstalk attenuation at 1 kHz

:> 80 dB

Dynamic range

:> 80 dB

Weighted signal-to-noise ratio

:> 80 dB(A)

3.4 Cabling and System Limits

Cable type

:75 Ohm RG59

Maximum number of radiators

: 30 per HF output

Maximum cable length

: 900 m per HF output

Integrus Data brochure | System Specification |15

DISTORTED RECEPTION OTHER LANGUAGE DISTRIBUTION SYSTEMS

NO LIGHT

INTERFERENCE

LIGHT

INTERFERENCE

PERFECT RECEPTION NEW BOSCH INTEGRUS SYSTEM

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