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Chapter 7. Technical data
7.1 System specification
System performance
Conforms to IEC 60914, the international standard for
conference systems
Conforms to IEC 61603-7, the international standard
for digital infra-red transmission of audio signals for
conference and similar applications
Transmission characteristics
IR transmission wavelength
870 nm
Protocol and modulation
DQPSK, according to
IEC 61603-7
Modulation frequency
Carriers 0 to 5: 2 to 6
MHz, according to IEC
61603-7
Carriers 6 and 7: up to 8
MHz
Band allocation:
System audio performance
(Measured from the audio input of an HCS-5100M
transmitter to the headphone output of an HCS-5100R
receiver.)
Audio frequency response
20 Hz to 10 kHz (-3 dB) at
Standard Quality
20 Hz to 20 kHz (-3 dB) at
Perfect Quality
Total harmonic distortion at 1 kHz
<0.05%
Isolation at 1 kHz
>80 dB
Dynamic range
>80 dB
Weighted signal-to-noise ratio
>80 dBA
Cabling and system limits
Cable type
75 Ohm RG59
Maximum number of radiators
30 per HF output
Maximum cable length
300 m per HF output
Maximum length of Cat.5
cross-over cable
80 m per piece
System environmental conditions
Working conditions
Fixed/stationary/transportable
Temperature range
- Transport
-40 °C to +70 °C
- Operating
0 °C to +45 °C
Max. Relative humidity
< 95%
Safety
Compliant to EN 60065
EMC emission
Compliant to EN 55022
EMC immunity
Compliant to EN 55024
EMC approvals
CE, FCC
Power harmonic
Compliant to EN 61000-3-2
Voltage fluctuations and flicker Compliant to EN 61000-3-3