Bosch INTEGRUS Specifications Page 19

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Bosch Security Systems B.V.www.boschsecurity.com
System Specification | 15
System Specif ication
System Specification
Features
X Up to 32 digital audio channels
X Wireless transmission gives participants freedom of
movement
X Digitized audio ensures very high audio quality
X Powerful compression techniques enable efficient, low-
loss transmission
X Comprehensive error correction ensures error-free
transmission
X Mono standard quality mode for efficient language
distribution
X Stereo standard quality mode for efficient music
distribution
Functions
Conference hall privacy; the congress venue itself acts as
a barrier to infra-red signals escaping and being
overheard (infra-red cannot pass through opaque
structures such as walls)
No interference between separate conference rooms
makes it possible to use an unlimited number of systems
in adjacent rooms
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 optimizing transmission
Premium quality modes for distribution of very high
quality sound
Transmission in 2-8 MHz frequency band eliminates
disturbance from all types of lighting systems
Certifications and Approvals
Technical Specifications
CE marking Conforms to IEC 60914, the international
standard for conference systems.
Conforms to IEC 61603 part 7, the interna-
tional standard for digital infra-red transmis-
sion of audio signals for conference and
similar applications
Safety: According to EN 60065, CAN/CSA-E65
(Canada and US) and UL 6500 or UL1419
(for LBB 4511/00 and LBB 4512/00)
EMC emission According to harmonized standard
EN 55103-1 and FCC rules part 15, comply-
ing with the limits for a class A digital device
EMC immunity According to harmonized standard
EN 55103-2
EMC approvals Affixed with the CE mark
ESD According to harmonized standard
EN 55103-2
Mains harmonics According to harmonized standard
EN 55103-1
Environmental requirements Contains no banned substances as specified
in UAT-0480/100 (e.g. no cadmium or
asbestos)
Transmission Characterisitics
IR transmission wavelength 870 nm
Modulation frequency
Carriers 0 to 5
Carriers 6 and 7
2to6MHz
up to 8 MHz
Protocol and modulation techniqueDQPSK
System Audio Performance
Measured from the audio input of an INT-TX transmitter to the head-
phone output of an LBB 4540 receiver
Audio frequency response
at Standard Quality
at Premium Quality
20 Hz to 10 kHz (-3 dB)
20 Hz to 20 kHz (-3 dB)
Total 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)
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
System Environmental Conditions
Working conditions Fixed / stationary / portable
Temperature range
transport
operating
for LBB 4560
for INT-TX
-40 to +70 °C (-40 to 158 °F)
+5 to +45 °C (41 to 122 °F)
+5 to +35 °C (41 to 113 °F)
+5 to +55 °C (41 to 131 °F)
Maximum relative humidity < 93%
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