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GeckoFlex 8937D Dual SDI/ASI Reclocking Equalizing Distribution Amplifier

This distribution amplifier is ideal for space-constrained applications where a limited number of signal copies are required. By offering twice the density, it's a perfect solution for mobile production applications—enabling 20 channels of distribution in only 2 RU of rack space. Both channels are fully DVB ASI compatible and can be used in any application where standard SDI video or ASI signals are to be copied and distributed. The standard reclocker circuits greatly reduce jitter-induced over cable runs adjacent to high-power lines or from unstable sources of standard data rate signals. The reclocker can easily be disabled to pass SMPTE 310M and other nonstandard data rate signals. A user-enabled video presence detection feature generates individual SNMP traps for each channel that can be sent to our CommandCenter SNMP manager or other SNMP systems.

  • Two separate distribution amplifiers on a single board
  • One with a looping differential input with three active outputs in addition to the loop-through passive output
  • One with a single-ended terminating input with four active outputs
  • Suitable for SMPTE 310M, SMPTE 259M, DVB ASI, SDI 270 Mb/s and most other 800 mV data from 4 Mb/s to 360 Mb/s
  • Input presence detection for each channel with SNMP trap generation
  • Independent reclocking circuits for each channel to reduce jitter
  • Automatic input cable equalization for up to 300 meters for each channel
  • Card-edge LED status indicators
Supported Chassis Types
GeckoFlex with 8900V-R GeckoFlex Video rear board, Gecko video chassis: 8900TX-V, 8900TF-V, 8900TFN-V

Power Rating
3.5 Watts – single slot

800 mV ±10% serial digital data including SMPTE 259M
Connector type: BNC
Impedance: High Z differential loop-through and 75Ω terminating
Supported data rates: 4 Mb/s through 360 Mb/s
Reclocked data rates: 143, 177, 270, 360 Mb/s
Return loss: >15 dB (up to 360 MHz)
Auto equalization: Up to 300 meters (270 Mb/s)

Type: 800 mV serial digital data in phase with the input signal
Number of outputs:
  • Four outputs, three active plus one passive loop-through
  • Four outputs, four active signals
Connector type: BNC
Impedance: 75Ω
Return loss: >15 dB (up to 360 MHz)

Electrical length: <20 ns
Temperature range: 0° – 45°C

Local Indicators/Controls
LED indicators:
  • Signal presence
  • Input sample rate
User controls:
  • Bypass/auto jumper selection for reclocker
  • Local/local-remote control enable jumper
Remote: SNMP trap generation – input presence detection
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.
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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