INTEGRUS | Digital Infra-red Language Distribution System en | 53BOSCH Security Systems | February 20037 Technical Data7.1 System SpecificationOverall system characteristicsx Conforms to IEC 60914, the international standard for conference systemsx Conforms to IEC 61603 part 7, the international standard for digital infra-red transmission of audio signals for conferenceand similar applicationsTransmission Characteristicsx IR transmission wavelength 870 nmx Modulation frequency Carriers 0 to 5: 2 to 6 MHz, according to IEC 60603 part 7Carriers 6 and 7: up to 8 MHzx Protocol and modulation technique DQPSK, according to IEC 60603 part 7System Audio Performance(Measured from the audio input of an LBB 4502 transmitter to the headphone output of an LBB 4540 receiver.)x Audio frequency response 20 Hz to 10 kHz (-3 dB) at Standard Quality20 Hz to 20 kHz (-3 dB) at Premium Qualityx Total harmonic distortion at 1 kHz < 0.05 %x Crosstalk attenuation at 1 kHz > 80 dBx Dynamic range > 80 dBx Weighted signal-to-noise ratio > 80 dB(A)Cabling and System Limitsx Cable type 75 Ohm RG59x Maximum number of radiators 30 per HF outputx Maximum cable length 900 m per HF outputSystem Environmental Conditionsx Working conditions Fixed/stationary/transportablex Temperature rangex transport -40 to +70qC (-40 to 158qF)x operating +5 to +45qC (41 to 113qF)+5 to +35ºC (41 to 122ºF) for LBB 4560+5 to +55qC (41 to 131qF) for LBB 4502x Maximum relative humidity < 93%x Safety According to EN 60065, CAN/CSA-E65 (Canada and US) and UL 6500According to EN 60065, CAN/CSA-E65 (Canada and US) and UL 1419for LBB 4511/00 and LBB 4512/00x EMC emission According to harmonized standard EN 55103-1 and FCC rules part 15,complying with the limits for a class A digital devicesx EMC immunity According to harmonized standard EN 55103-2x EMC approvals Affixed with the CE mark.x ESD According to harmonized standard EN 55103-2x Mains harmonics According to harmonized standard EN 55103-1x Environmental requirements Contains no banned substances as specified in UAT-0480/100 (e.g. nocadmium or asbestos)