1Ch (2) SDI digital video and Max4 (8) Ch analog audio or AES/EBU fiber system

Lightem Systems LDMB series digital video and analog audio or AES/EBU digital audio fiber optic transmission system transmits X SD-SDI(143M/177M/270M/360M/540Mbps) standard definition digital video and up to X analog audio or AES/EBU digital audio over one single mode fiber or multimode fiber.
Lightem Systems LDMB series transmitter provides X SDI and X analog audio or X AES/EBU digital audio input, and one SDI loop-through for local monitoring. The receiver outputs two 2-way parallel SDI digital video and X analog audio or X AES/EBU digital audio.
Thanks for the auto-cable equalization, cable driver circuit and signal jitter elimination circuit, high quality signal transmission over long distance fiber cable is realised.

 

  • Compliant with the standards of SMPTE259M, SMPTE297M, SMPTE310M, SMPTE305M (SDTI), SMPTE344M
  • Compliant with the standard of DVB-ASI(EN50083-9)
  • Auto adaption to the speed of SDI 143M,177M,270M,360M,540Mbps
  • With automatic cable equalization function, compensation for cable transmission loss
  • X SDI digital video, up to 8 analog audio channels, or up to 8 channels AES/EBU digital audio
  • Convenient instructions of LED status, data rate, optical signal, power etc.
  • A variety of installation options: 15-slot rack,particularly suitable for large volume optical transmission platform construction, and also available for 4-slot rack, 2-slot rack and single-slot rack, fixed 1RU 19-inch enclosure box.
Transmitter
Analog Audio Input LDMB-1 LDMB-2
Input Number of Channels 2 or 4 8
Max Input Level 17.4VP-P  (+18dBm) or need
Frequence Width 20Hz—20 KHz
Impedance 600Ω
Connector XLR
Digital Audio AES/EBU Input
Input Number of Channels 2 or 4 8
Input Level 0.2 – 7.0Vp-p
Sample Frequence 32KHZ–108KHZ (20/24bit)
Impedance 110Ω
Connector XLR
SDI Digital Video Input
Number of Channel 1 2
Input Signal Standard 4:2:2 SMPTE259M(270Mbps)
Input Level >380mVp-p
Input Return Loss >16db(270MHZ)
Input Auto Cable Equilibria >250m(270Mbps)(BELDEN8281 cable)
Impedance 75Ω
Connector BNC
SDI Digital Video loop Output
Loop-through Number of Port 1 2
Loop-through Signal Standard 4:2:2 SMPTE259M(270Mbps)
Loop-through Level  800mVp-p±10%
Max Jitter < 0.2UI(270Mbps)
Rise/Fall Time <0.8ns
Impedance 75Ω
Connector BNC
Physical
Dimension 44(H)×433(W)×340(D)(mm)
Power Supply 95 – 260VAC,50-60Hz
Power Consumption <20W
Temperature 0 to +70 Degree
Humidity 0 to 95% RH Non-condensing
LED Status Indicator Power, Optical Link, Video and Audio Activity
Receiver
Analog Audio Output 
Number of Channel 2 or 4 8
Operating Mode Balance/Unbalance
Max output Level 17.4Vp-p@+18dBm
Frequence response 20HZ-20KHZ@-0.5dB
THD <0.2%
Impedance Low
Connector XLR
Digital Audio(AES/EBU)Output
Number of Channel 2 or 4 8
Output Level 5Vp-p
Coding Digit 20bits or 24bits
Sample Frequence 48KHZ 
Data Jitter <±20ns
Impedance 110Ω
Connector XLR
SDI Digital Video Output
Number of Output Port 2 4
Output Signal Standard 4:2:2 SMPTE259M(270Mbps)
Output Level 800mVp-p±10%
Max Jitter <0.2UI(270Mbps)
Rise/Fall Time <0.8ns
Impedance 75Ω
Connector BNC
Physical
Dimension 44(H)×433(W)×340(D)(mm)
Power Supply 95 – 260VAC,50-60Hz
Power Consumption <20W
Operating Temperature 0 to +70 ℃
Humidity 0 to 95% RH, non-condensing
LED Status Indicator Power, Optical Link, Video and Audio Activity
Optical
Fiber Type Single mode or multimode
Number of fiber  1
Wavelength 1310nm/1550nm
Distance Up to 100km
Connector FC
PN
LDMB-1 Lightem Systems 1 SDI Digital Video +2 or 4 analog audio /AES/EBU digital audio fiber optic Transmission System
LDMB-2 Lightem Systems 2 SDI Digital Video +8 analog audio /AES/EBU digital audio fiber optic Transmission System