Audio Video Systems

Digital Audio

Lightem Systems Digital Audio is high performance digital fiber optic transmission system.

 

AES/EBU Digital Audio fiber system

Lightem Systems LBDA series is high performance AES/EBU digital audio fiber optic transmission system. Provide X-channel AES/EBU digital audio via fiber optic transmissions media. It accepts synchronous or asynchronous AES/EBU of 44.1 or 48 kHz sampling frequency.

  • Input/output AES/EBU digital audio
  • X-channel synchronous or asynchronous AES/EBU signals transmitted simultaneously.
  • Transmission distance up to 120 km without relay

Parameters LBDA-2 LBDA-4 LBDA-8
Audio InputAES/EBU Audio Input
Standard
AES/EBU under AES3-1992(ANSI S4.40-1992, IEC 958)1
Channel Capacity
2
4
8
Level
0.2-7.0Vp-p
Sampling Frequency
32 KHz-108 KHz
Impedance
110Ω(balance),or 75Ω(unbalance)
Connector
XLR(balance), BNC(unbalance)
AES/EBU Audio Output
Channel Capacity
2
4
8
Level
5Vp-p
Sampling Frequency
48KHz <0.6ns@270Mbps
Jitter
<0.005UIp-p
Rise/Fall time
<25ns
Impedance
110Ω(balance)
Connector
XLR(balance)
Physical
Dimension(HxWxD)
43×430×230(mm
Power Supply
130 – 255VAC,50-60Hz
Operating Temperature
0 - +50°C
Humidity
0 - 95% RH, non-condensing
LED Status Indicator
Power, Optical Link, Video/Audio Activity
Optical
Fiber Type
Single mode or Multimode
Number of fiber
1
Wavelength
1310nm and/or 1550nm
Fiber Optic Connector
FC/PC
Transmission Distance
0-100km

AES/EBU digital audio to Analog audio

Lightem Systems LADA series AES/EBU digital audio to analog audio converter convert 2 AES/EBU digital audio to 4 analog audio. Every AES/EBU digital audio is converted to two analog audio. Lightem Systems AC2 series AES/EBU digital audio to analog audio converter has high signal precision, stability and reliability, which is ideal for radio station, CMMB, IPTV, mobile TV, mobile phone TV, telecommunication operators, government video conference system and other new media field applications.

  • Designed specially for radio station with high quality audio format conversion requirements
  • Ultra wide analog audio dynamic range
  • Automatic switching between balanced and unbalanced audio input, ESD protection for more reliable operation
  • Compatible with many AES/EBU digital audio sampling frequencies
  • LED indicators for monitoring purpose.
  • PCB boards made with multilayer design, to ensure stable and reliable signal conversion

Parameters Values
AES/EBU Digital Audio Input
Channel Capacity
4
Level
0.2-7.0Vp-p
Input Level
1.2Vp-p
Sampling Frequency
32 KHz-96 KHz
Impedance
110Ω
Connector
XLR
AES/EBU Audio Output
No. of Channel
4
Frequency Response
20Hz-20KHz@-0.5dB
Operating Mode
Balanced or unbalanced
Max output level
17.4Vp-p(+18dBm)
SNR(weighted)
>90dB
THD
<0.2%
Isolation
>90dB@1KHz;>90Db@20khZ
Delay
2 degree
Amplitude match
±0.2dB
Output Impedance
Small resistance
Connector
XLR
Physical
Dimension(HxWxD,mm)
44×433×340(mm)
Power Supply
60-260VAC,50-60Hz
Temperature
0 – +50 °C
Humidity
0 – 95% RH, non-condensing
LED Status Indicator
Power, Audio Activity

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