Grass valley 8920DMX DATASHEET
14 8920DMX Video/Audio Demultiplexer (De-embedder)
Key Features
•Extracts up to two AES/EBU streams
•Supports 48 kHz audio
•EDH detection
•75Ω unbalanced or 110Ω balanced digital audio outputs
•Supports networked control and monitoring
This companion to the 8920MUX simplifies the management of multichannel audio
by extracting up to two 48 kHz AES audio streams (up to four discrete channels) from one of the eight available AES groups in the ancillary data space of embedded 525 or 625 serial digital component video. The 8920DMX recognizes and preserves the ID and channel status of the 20or 24-bit AES group and can delete groups assigned for extraction or pass them through to another demultiplexer. The two AES/EBU outputs can
be either 75Ω unbalanced or 110Ω balanced to accommodate a variety of digital audio processing equipment.
8900V-R
J1 J2
Video |
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Video |
Output |
J3 |
J4 |
Output |
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J5 |
J6 |
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(75/110 ) |
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(75/110 ) |
AES 1 Output |
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AES 2 Output |
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J7 |
J8 |
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(75/110 ) |
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(75/110 ) |
AES 1 Output |
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AES 2 Output |
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J9 |
J10 |
Video |
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Input |
Loopthru
8900CTB-04
110Ω input adapter
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Reclocker |
SDI |
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SDI |
DEMUX |
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w/Embedded |
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w/Embedded |
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Audio |
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Audio |
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Dual 75 |
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Delay |
Micro- |
AES TX |
AES/EBU |
Single 110 |
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Delay |
processor |
AES TX |
AES/EBU |
Dual 75 |
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LEDs |
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Single 110 |
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Ethernet |
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Specifications
Supported Frame Types
GeckoFlex with 8900V-R GeckoFlex Video rear module, Gecko video frames: 8900TX-V, 8900TF-V, 8900TFN-V
Power Rating
7 Watts – single slot
Video Input
Signal type: SMPTE 259M, EBU 3267-E Connector: Differential loop-through BNC
Impedance: High Z
Return loss: >15 dB up to 270 MHz
Cable equalization: <300 meters
Audio Output
Signal type: AES-3id-1995 (75Ω), AES3 (110Ω)
Number of channels: Four (two streams)
Connectors: BNC (75Ω), terminal block adapter (110Ω)
Sample rate: 48 kHz Resolution: 20or 24-bit
Video Output
Signal type: SMPTE 259M
Connector: Four 75Ω or two 110Ω via 8900CBT-04 Return loss: >15 dB, 5 to 270 MHz
Error checking: EDH embedded
Performance
Operating temperature: 0° to 45°C
Humidity: 10% to 90% non-condensing
Indicators and Controls
Indicators: Video present, audio present, fault, power, communication active, configuration, remote override
Controls: Audio group selection
Remote: All indicators and controls via Ethernet
Ordering Information
This module can be mounted in a GeckoFlex frame when ordered with the 8900V-R GeckoFlex Video rear module.
8920DMX
Audio/video demultiplexer, 75Ω
8920DMX-110
Audio/video demultiplexer, 110Ω
8900CTB-04
BNC to terminal block adapter to convert 8920DMX to 8920DMX-110
For detailed specifications, installation, and setup instructions see: www.grassvalley.com/docs/modular
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