Aladdin Digital Infrared Language Distribution
Installation and User Manual
Televic Conference Systems
2011-09-01
63
8.
Technical Data
This section describes the specifications of the full
system, infrared transmitter, radiator, receiver,
headphones, battery pack and charging case. It also
describes the connection details and gives a list of
the display languages.
8.1.
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
Modulation
frequency
Carriers 0 to 5: 2 to 6 MHz,
according to IEC 61603-7
Carriers 6 and 7: up to 8 MHz
Protocol and
modulation
DQPSK, according to
IEC 61603-7
System Audio Performance
(Measured from the audio input of an Aladdin T8
transmitter to the headphone output of an Aladdin
R8 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%
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
50 Ohm RG58
Maximum number of
radiators
30 per HF output
Maximum cable length
900 m per HF output
