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GeckoFlex 8902 Analog Video Equalizing Distribution Amplifier

Offering the same features and functionality of the 8901 utility DA, this board adds cable equalization to accurately compensate for attenuation and phase errors induced from long cable runs. Additionally, the DC restoration mode can be used to smoothly restore the DC component during blanking level to zero volts. This DC restoration circuit functions with or without synchronization pulses so it can be used with RGB or YUV signals that do not contain synchronization pulses. Our entire line of both analog and digital distribution amplifiers offer differential loop-through inputs designed to remove common mode hum induced by cable runs adjacent to AC mains cables.

  • Suitable for NTSC, PAL, SECAM, RGB, YUV, Tri-level sync
  • Passive differential looping input with eight active outputs
  • Selectable AC, DC, and DC restore input coupling modes
  • Card-edge adjustable cable-specific equalization for up to 300 meters
  • Card-edge adjustable gain control
  • Excellent differential gain and phase specifications
  • Card-edge status indicators
Supported Chassis Types
GeckoFlex with 8900V-R GeckoFlex Video rear board, Gecko video chassis: 8900TX-V, 8900TF-V, 8900TFN-V

Power Rating
2.3 Watts - single slot

Type: 1 Vp-p analog video with operation up to 2 Vp-p NTSC, PAL, SECAM, RGB, YUV, Tri-level sync
Connector type: BNC
Impedance: Passive high impedance differential loop-through
Return loss: >40 dB up to 5 MHz
CMRR: >66 dB 50/60 Hz
Common mode input: ±10V

Voltage: 1 Vp-p ±2 dB
Number of outputs: Eight active plus one passive loop-through input
Connector type: BNC
Impedance: 75Ω
Return loss: >40 dB up to 5 MHz
Output DC: <50 mV

Cable equalization: Dual range
  • 0 to 150m (0 – 500 ft.)
  • 150 to 300m (500 – 1000 ft.)
Frequency response:
  • ±0.025 dB to 5 MHz
  • ±0.05 dB 5 to 8 MHz
  • –1 dB at 16 MHz
Differential gain: <0.1%
Differential phase: <0.1°
Gain range: ±2 dB
Tilt: <0.5%
Coupling: AC, DC, DC restore
Electrical length: 20 ns
Temperature range: 0° to 30°C

User controls: Output gain adjustment range: ±2 dB EQ adjustment for up to 300 meters of input cable
LED indicators: Fault, power, frame bus communication
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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