4 Bi - Directional SDI / HDSDI Over 1 Fiber Transceiver

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Description Features Drawings Model Selection Specification Documents

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.

8 hdsdi to fiber

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.


Locking Cables
ST/RF or SC fiber & BNC connectors 

No Link Alarms
Link status alarm on both the transmitter and receiver indicate when the link is not functional.
Serial Data
  RS-485 return path sends serial data from the receiver back to the transmitter for device control.
  • 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
Model Selection

Base Model F-4SDI-B-TX/RX  support single mode fiber up to 20Km and it has ST/PC connector

Additional Model Selection :


Addition Avialable  Cards :

(External Analog Audio, 10/100 Etherent, Gigabit Etherent, RS422, RS232) (add $)

  • 4 forward contact closure+Embedded audio
  • 2 backward contact closure+Embedded audio
  • 1 bidirectional RS422+Embedded audio
  • 2 bidirectional RS232+Embedded audio
  • 2 external bidirectional audio
  • 8 external forward audio
  • 4 external backward audio
  • 10/100 Etherent (full-duplex )  
  • Gigabit Etherent  (full-duplex ) - Avialable only on CWDM unit


XX = Optical connector : SC/PC , FC/PC (same price)
F-4SDI-B-TX/RX-XX-YY  YY = Fiber optic distance 40,60,80,100,120Km (add $)
F-4SDI-B-TX/RX-XX-YY-ZZ ZZ = (MM) Multi-mode, (SM) Single-mode (same price)


3G SDI supprted up to 3Gbps (add $)
AUX cards selection:
  • AUX204
  1-channel bidirectional RS422
  • AUX205
  2-channel bidirectional RS232
  • AUX206
  2-channel bidirectional audio
  • AUX207
  2-channel unidirectional audio output
  • AUX208
  2-channel unidirectional audio input
  • AUX211
  4-channel unidirectional audio input
  • AUX208


4-channel unidirectional audio output
  • AUX201
  2-channel contact closure input
  • AUX200
  2-channel contact closure output
*All Specifiactions Subject to Change Without Notice
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
20Km (40, 60, 100Km Available )
Mini box
Power Supply
130 - 260 VAC @ 50-60 Hz
Power Consumption  
0 to +70 Degree
0 to 95%
ST/PC or  ( FC/PC or SC/PC or SC/APC optional)

Optical Channels

TDM/CWDM type 



LED Status Indic

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