Integrus Planning | en 17Bosch Security Systems B.V. Installation and Operation manual IOM-INT | V1.1 | 2010.125. Radiation - Up to 8 modulated carrier signals are combined and sent to the IR radiators,which convert the carrier signals to modulated infra-red light.In the IR receivers a reverse processing is used to convert the modulated infra-red light toseparate analogue audio channels.Figure 4.2 Overview of the signal processing (for one carrier)4.1.3 Quality modesThe Integrus system can transmit audio in four different quality modes:– Mono, standard quality, maximum 32 channels– Mono, premium quality, maximum 16 channels– Stereo, standard quality, maximum 16 channels– Stereo, premium quality, maximum 8 channelsThe standard quality mode uses less bandwidth and can be used for transmitting speech. Formusic the premium quality mode gives near CD quality.4.1.4 Carriers and channelsThe Integrus system can transmit up to 8 different carrier signals (depending on thetransmitter type). Each carrier can contain up to 4 different audio channels. The maximumnumber of channels per carrier is dependent on the selected quality modes. Stereo signalsuse twice as much bandwidth as a mono signals, premium quality uses twice as muchbandwidth as standard quality.Per carrier a mix of channels with different quality modes is possible, as long as the totalavailable bandwidth is not exceeded. The table below lists all possible channel combinationsper carrier:A/D Conversion& CompressionA/D Conversion& CompressionAudioChannelAudioChannelProtocol Creation& Modulation4x Carrier (to IR Radiators)4xChannel qualityMonoStandardMonoPremiumStereoStandardStereoPremiumBandwidthPossiblenumberofchannelspercarrier4 4 x 10 kHz2 1 2 x 10 kHz and 1 x 20 kHz2 1 2 x 10 kHz and 1 x 10 kHz (left)and 1 x 10 kHz (right)1 1 1 x 20 kHz and 1 x 10 kHz (left)and 1 x 10 kHz (right)2 2 x 10 kHz (left) and 2 x 10 kHz(right)2 2 x 20 kHz1 1 x 20 kHz (left) and 1 x 20 kHz(right)