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GeckoFlex 8920DAC Audio D-to-A Converter

The 8920DAC is an easy-to-use digital audio to analog audio converter. Its various modes allow you to modify the outgoing signal, such as channel swapping, channel summing, phase inversion, and more. The remote capability supports mode selection and input monitoring. Typical applications include interfacing between digital and analog equipment, such as speakers, audio mixers, and routers.

  • AES/EBU differential loop-through input
  • 20- or 24-bit modes
  • Wide range of output modes (swap, invert, sum, tones, silence)
  • 32 to 48 kHz sampling rate with indicators at 32, 44.1, and 48 kHz
  • Terminal block output via adapter 8900CTB-04
  • Independent output level control from +14 dBu to +24 dBu
  • >110 dB "A weighted" signal-to-noise ratio
  • Housed in the same chassis with other 8900-V audio and video boards
  • Remote control via Ethernet chassis interface
Supported Chassis Types
GeckoFlex with 8900V-R GeckoFlex Video rear board, Gecko video chassis: 8900TX-V, 8900TF-V, 8900TFN-V

Power Rating
3.1 Watts – single slot

Input
Type: AES-3id-1992 – unbalanced
Number of inputs: One differential loop-through
Connector: 75Ω BNC
Common mode range: ±12 V pk DC –20 kHz
Input signal level range: 200 mV to 12 Vp-p
Sampling rates: Any rate from 32 to 48 kHz with indicators at 32, 44.1, and 48 kHz
Input return loss: >15 dB (100 kHz to 10 MHz)
Maximum jitter: <200 ps RMS

Output
Number of outputs: One stereo pair
Output level: +14 to +24 dBu max
Output impedance: 50Ω single-ended, 100Ω differential
Connector type: Terminal block through 8900CTB-04 BNC adapter board

Performance
Signal/noise ratio:
  • >107 dB unweighted 22 kHz filter
  • >110 dB "A" weighted
Frequency response: ±0.1 dB 20 Hz – 20 kHz @ 48 kHz sampling
THD + noise: <0.004% @ 24 dBu
Quantization: 20- or 24-bit
Interchannel crosstalk: <–100 dB, 20 Hz to 20 kHz
DC offset: <±50 mV
Operating temperature: 0° to 45°C
Humidity: 10% to 90% non-condensing
Non-operating temperature: –10° to 70°C

Indicators and Controls
Indicators: Input data rates, power, de-emphasis, fault, remote override communication active, configuration
Controls: Operation modes (normal, channel swap, phase invert, channel sum, tone), output gain
Remote: All indicators and controls via chassis Ethernet except gain
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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