1 channel SD/HD 3G SDI Fiber Extender 1080p/60hz

Qty: 3
Price: $ 539.00
Availability: In stock Condition: new
Shipping: starting at $22.00 Warranty: 1Yrs
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Description Features Drawings Model Selection Specification Q&A Documents Support

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
Model Selection


XX = Optical connector: ST/SC/PC, FC / PC (same price)


YY = Fiber optic distance 40,60,80,100,120Km (add $)


ZZ = (MM) Multi-mode (SM) Single-mode (same price)

Single mode unit will for multimode fiber for up ro 2000 feet

* 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
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  
0 to +70 Degree
0 to 95%
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
270 Mbit / s, 360 Mbit / s, 143 Mbit / s and 177 Mbit / s
480i, 576i
540 Mbit / s
480p, 576p
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
SMPTE 424m 3G-SDI  
2.970 Gbit / s and 2.970 / 1.001 Gbit / s
Question and Answers
That won't be an issue. If you have the M1sdi-3G units; the transmit and receive pair; you can check the specs' and see on multimode fiber they work for about 2000ft; but over singlemode fiber the standard units go about 20km. 
In none of the situations you mention above are you coming even remotely close to 20km so the standard stock units should be more than capable to handle your current environment. 
Unfortunately the distance limitation is not inherently within our unit, but with the choice of fiber you are using. Regardless of how strong we make the optics in the transmitter, the distance limitation residing within the multimode fiber core is the problem area that degredates your signal transmission.
EDFA will not help if you are using multimode fiber.

The right solution would be to use single mode fiber instead of multimode. Then, you will not even need EDFA for 500 meters. Please let me know if this is clear.

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