Specifications Ordering Information
J1 J2
J3 J4
J5 J6
J7 J8
J9 J10
Video
Output
(75/110Ω)
AES 1 Output
Video
Input
(75/110Ω)
AES 2 Output
(75/110Ω)
AES 1 Output
(75/110Ω)
AES 2 Output
Video
Output
Loopthru
8900V-R
DEMUX
Micro-
processor
Ethernet
AES/EBU
LEDs
AES/EBU
SDI
w/Embedded
Audio
AES TX
AES TX
Delay
Delay
Reclocker
SDI
w/Embedded
Audio
Dual 75Ω
Single 110Ω
Dual 75Ω
Single 110Ω
8900CTB-04
110Ω input adapter
14
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
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 20- or 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.
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: 20- or 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
8920DMX Video/Audio Demultiplexer (De-embedder)
For detailed specifications, installation, and setup
instructions see:
www.grassvalley.com/docs/modular
