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3G SDI over fiber, 3G SDI Fiber Extender with RS485 control for data  

Optical Transmitter Receiver kit –

Extend 3G, HD-SDI or SD-SDI digital video signals over single-mode fiber optic cable
Base Model F-M1SDI-3G-TX / RX support single mode fiber up to 20Km and it has ST / PC connector

Thor Fiber ultra compact 3G SDI fiber extender kits are designed to increase the range of digital 3G, SD-SDI or HD-SDI video signals over singlemode or multimode fiber optic cable. SDI is normally carried over coax cable on BNC connectors, however the maximum cable distance is limited to around 100 meters. Thor SDI extenders increase the distance to more than 80 miles by using lasers to send data over the fiber cable. 

F-M1SDI-3G-TX/RX kit with ST/PC fiber connector, supports single mode fiber up to 20Km  or 2000 feet over multimode fiber

Up to 3G SDI Optical Fiber converters.

It allows the transport of SDI, HD-SDI, and 3G SDI over distances up to 20km using single-mode fiber optic cable or 2000 feet using multimode fiber, with your choice of LC, ST or SC connectors (ST/PC Standard)


  • Supports SMPTE-424m (3G-SDI), SMPTE-292M (HD-SDI), SMPTE-259M (SDL), DVB-ASI specifications
  • Telecast Rattler Comparable
  • Extends up to 15 miles (20km)
  • Transports Multi-rate HD-SDI Digital Video Over Fiber 1 Single Mode Fiber
  • Latch-Locking Power Connector
  • HD-SDI BNC input connector and ST terminated fiber optic connector (diffrent connectors available)
  • Robust metal die-cast enclosure for harsher environments
  • Automatic Input Equalization
  • Input Impedance: 75 Ohm
  • Data Rate: up to 3 Gbps
  • Signal Level: 800mVp-p +/- 50mV
  • Optical Fiber Types: ST (Multi mode and Single mode)
  • Number of Fibers: 1
  • Output Connector: BNC Female
  • Distance: Up to 15 miles (20km) using single-mode fiber. Up to 1 kilometer using multi mode fiber
  • Propagation Delay (Sender): 1.3 ns
  • Propagation Delay (Receiver): 35 ns
  • Dimension: Dimensions: 0.77 “W x 0.77” H x 1.97 “D
  • Power Supply: 5V DC @ 0.5 A
  • Power Budget: 13dB
  • Operating Temperature: -20 to + 80C
  • Wavelength (Sender Unit): 1310nm
  • Wavelength (Receiver Unit): 1310 nm – 1670 nm
  • Shipping Weight 1 lbs


* All Specifiactions Subject to Change Without Notice
HD-SDI Input


0 – 3 Gbps Serial Digital Signal

Input Signal Standard: SMPTE292M, SMPTE259M, SMPTE297M, SMPTE310, SMPTE 424m,

SMPTE 372m SMPTE305 (SDTI), DVB-ASI (EN50083-9), Medi Audio 

Number of Input  1 SDI – (BNC)
 1 RS-485 (terminal block) 
Signal Level > 800mVp-p 
Impedance 75Ω 
Connector BNC 
Distance 20/30/60/80 / 100Km – model selection 
mini box 93.2mm×46.2mm×29.6mm
Power Supply 130 – 260 VAC @ 50-60 Hz 
Power Consumption <10W 
Temperature 0 to +70 Degree 
humidity 0 to 95% 
Connector ST / PC or (SC / PC or FC / PC per request) 

Optical Channels

1310 or (1550nm and CWDM available) 

LED Status Indicator Power

Power / Link LED 


Supported Standards:

  SMPTE format   bitrates  video formats
SMPTE 259M SD-SDI   270 Mbit / s, 360 Mbit / s, 143 Mbit / s and 177 Mbit / s  480i, 576i
SMPTE 344M ED-SDI   540 Mbit / s  480p, 576p
SMPTE 292M HD-SDI   1,485 Gbit / s and 1,485 / 1,001 Gbit / s  720p, 1080i
SMPTE 372m Dual Link HD-SDI   2.970 Gbit / s and 2.970 / 1.001 Gbit / s  1080p60
SMPTE 424m 3G-SDI   2.970 Gbit / s and 2.970 / 1.001 Gbit / s  1080p60