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GeckoFlex 8943CF 4-Channel Electrical to Fiber Conversion

The 8943CF is a four-channel electrical to optical broadcast quality fiber optic conversion module with reflected electrical outputs. It can accommodate SD/HD/3G-SDI video inputs as well as DVB ASI, unbalanced AES, and Grass Valley® audio TDM interfaces. The optical circuitry is housed in dedicated strap-mount SFP submodule devices mounted on the module circuit board. The SFPs selected set the power and the wavelength for the unit which allows for CWDM operation when combined with the 8939FCA and 8939FCB optical multiplexers. This replaceable optical technology allows for easy upgrade, reconfiguration and servicing.

  • Four-channel SDI/HD/3G-SDI fiber transmitter
  • Also supports DVB ASI, AES, and Grass Valley audio TDM interface
  • Supports up to two SFP devices for up to four fiber optic outputs
  • Reclocking for stable long distance signals
  • Reclock bypass for non-SDI signal types
  • Accommodates lasers with separated wavelengths for CWDM optical multiplexing
  • Single-mode fiber
  • Can be used with the 8943FC receiver and other fiber-ready boards for distances of between 0 and 50 km, depending on the transmitter
  • Meets SMPTE 292M/297M/259M/424M signal specifications
  • Transporting multiple high-definition video feeds over long distances
  • For constructing SD/HD/3G-SDI optical tie-lines
  • Sending multiple optical signals over long distances to fiber-ready synchronizing modules for re-timing
  • To feed the 8939FCA for an extremely compact multiplexed fiber solution
Supported Chassis Types

Power Rating
7.5 Watts (with two SFP devices) – single slot

Modes of Operation
The 8943CF supports following modes of operations:
  • Auto reclock/bypass
  • Auto reclock/mute
  • 3G 2790M
  • HD 1485M
  • SD 270M
  • Manual bypass HD/3G
  • Manual bypass SD
Operating temperature range: 0 to +45°C
Non-operating temperature range: -10 to +70°C
Humidity: 90% non-condensing

Serial Digital Input
Connector: BNC
Equalization (with Belden 1694A cable): 300m up to 270 Mb/s, 100m from 270 Mb/s to 1.5 Gb/s, 80m from 270 Mb/s to 2.97 Gb/s
Input impedance: 75Ω
Return loss: 15 dB
  • SMPTE 424M at 2.97 Gb/s
  • SMPTE 292 M-1998 at 1.485 Gb/s
  • SMPTE 259M-1997 and DVB-ASI at 270 Mb/s
Non-reclocking: 1 to 540 Mb/s, AES 3id-2001 and MADI

Fiber Digital Outputs
Connector: Four LC optical connectors
Optical outputs: One optical per electrical input
Electrical outputs: One 75Ω BNC reflected electrical output per electrical input

Electrical Length
Reclocked at 270 Mb: 10 ns
Reclocked at 1.5 Gb: 8 ns
Reclocked at 2.97 Gb: 8 ns
Bypass: 7 ns
Fiber Optic Sub-board Devices
Channels 2 Frequencies per CWDM SFP Device
Channel 1 and 2 1470 nm & 1490 nm Transmitters
Channel 3 and 4 1510 nm & 1530 nm Transmitters
Channel 5 and 6 1550 nm & 1570 nm Transmitters
Channel 7 and 8 1590 nm & 1610 nm Transmitters
Channel 9 and 10 1310 nm & 1330 nm Transmitters
Channel 11 and 12 1350 nm & 1370 nm Transmitters
Channel 13 and 14 1390 nm & 1410 nm Transmitters
Channel 15 and 16 1430 nm & 1450 nm Transmitters
These SFP transmitters are Class 1 laser devices
November 25, 2013
Hillsboro, Ore., November 25, 2013 — Brazil's Canção Nova, a non-profit Catholic Community located in Cachoeira Paulista in the state of São Paulo, is upgrading its broadcast infrastructure with a range of Grass Valley® solutions including five Maestro™ branding and master control systems, five Concerto™ 64x64 routing switchers, five GeckoFlex™ signal processing systems, and six K2 Summit® servers for optimized live event workflows. The system will be live in November and span five locations.
November 12, 2013
Hillsboro, Ore., November 12, 2013 — Bank TV, a satellite broadcaster in the Ukraine, has launched a complete, end-to-end high definition (HD) news production solution from Grass Valley® to facilitate the smooth delivery of its 24/7programming. At the core of the broadcaster's new structure is GV STRATUS® nonlinear media production tools for enhanced production and a streamlined workflow. GV STRATUS is being used in tandem with EDIUS® multiformat nonlinear editing software and GV Edge™ Integrated Playout System with K2 Edge™ playout nodes for 24/7 playout. This deal with Bank TV builds upon the recent momentum generated by Grass Valley in the Ukrainian broadcast market as well as traction gained by GV STRATUS in the EMEA region.
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