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4 Ch HD-SDI in both directions over single fiber

Extend HD-SDI or SD-SDI digital video signals long distances over single-mode fiber optic cable 

Transport up to 4 full rate HD-SDI digital video signals in both directions at 1.5Gbps each over a single strand of fiber cable up to 80km long.  In addition dual Aux ports provide additional capacity by adding up to 4 analog bi-directional audio, 2 full duplex RS-232/422 links, or 4 contact closure lines per Aux interface.  

The transmitter inputs support any serial digital signal up to HD-SDI, including SD-SDI.  The F-M8SDI platform delivers more functionality and performance over a single fiber than has ever been available in off the shelf equipment.  

Each of the 4 bi-directional HD-SDI signals are fully isolated from each other and operate at a full 1.5 Gbps data rate.  Each channel carries its own embedded audio and ancillary data and operates as if it were the only signal on the fiber.  This is accomplished with CWDM technology.

The 8 channel platform offers the same 5 pin Aux port custom signal options as the two and four channel units.  However functionality is doubled by providing 2 independent Aux links that can be customized for 4 channel bi-directional or unidirectional audio, 1 or 2 duplex RS-232/422 links, or 4 line contact closure.


  • Supports 4- bi-directional Full HD-SDI @ 1.5Gbps or lower SDI
  • Transports embedded audio channels as well as SDI ancillary data
  • Return path serial RS-485 channel for controlling equipment on Tx end
  • Link alarm indicators on both Tx & Rx indicate a problem with the fiber


HD-SDI Input

HD-SDI, SD-SDI,  (ASI supported only on the F-4ASI-TX, F-4ASI-RX CWDM model)
0 – 1.5 Gbps Serial Digital Signal 

Number of Input 8 SDI (4  SDI in ich direction)
 1 RS-485
 2 Auxiliary  
Signal Level > 380mVp-p 
Impedance 75Ω 
Connector BNC 
Distance 20Km (40, 60, 100Km Available ) 
Mini box 25×116×110 
Power Supply 130 – 260 VAC @ 50-60 Hz 
Power Consumption <10W 
Temperature 0 to +70 Degree 
Humidity 0 to 95% 
Connector ST/PC or  ( FC/PC or SC/PC or SC/APC optional) 

Optical Channels

TDM/CWDM type  



LED Status Indic