4 SDI Digital Video plus IP fiber System

Lightem Systems LSDASI-4-E digital video fiber optic transmission system transmits 4 SD-SDI(143M/177M/270M/360M/540Mbps) standard definition digital video and 1 10/100/1000Mbps ethernet through one single mode fiber or multimode fiber with the standards of SMPTE259M, SMPTE297M, SMPTE310M, SMPTE305M (SDTI), or transmit 4 digital video signal with the standard of DVB-ASI stream. The converter provides 4 SDI/ASI input, and the receiver outputs 4-way parallel SDI/ASI digital video.


  • SDI/ASI signal auto recognition
  • 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, or DVB-ASI
  • Support gigabit Ethernet network, IEEE 802.3 standard
Signal Standard SMPTE259M,SMPTE297M,SMPTE310,
SMPTE305(SDTI), DVB-ASI(EN50083-9)
Number of Input          4
Resolution 10 Bit
Signal Level   >380mVp-p
Auto-Cable Equalization >250m(270Mbps)( BELDEN8281 Cable)
Return Loss >16dB(270Mbps)
Impedance 75Ω
Connector BNC
SDI/ASI Output
Number of Output 4
Signal Level 800mVp-p±10%
Rise/Fall time <0.65ns
SDI Jitter <0.2UI(740ps)@10Hz
Impedance 75 ohm
Connector BNC
Ethernet Network
Standard IEEE 802.3
Data rate 10/100/1000Mbps auto sense
Auto Negotiation support
Work mode Full-duplex or half-duplex
Auto-cross support
Connector RJ45
LED Indicators Data rate, fiber optic
Dimension(HxWxD, mm)
19-inch 1RU
Power Supply 130 – 255VAC,50-60Hz
Power Consumption <10W
Temperature 0 to +70 Degree
Humidity 0 to 95% RH Non-condensing
LED Status Indicator Power, Optical Link, Video Activity
Fiber Type Single mode or multimode
Number of fiber 1
Wavelength 1310nm/1550nm
Distance Up to 120km
Connector FC/PC

Lightem Systems 4Ch SDI/ASI Digital Video + Gigabit Ethernet fiber optic converter