Specifications Ordering Information
J1 J2
J3 J4
J5 J6
J7 J8
J9 J10
Output
(75/110)
75Ω AES 1
SDI Video
Input
Output
110Ω
(75/110)
75Ω AES 2
110Ω
8900V-R
Loopthru
Local Controls
MUX
Micro-
processor LEDs
Ethernet
SDI
w/Audio
AES/EBU 2
AES/EBU 1
SDI
w/Audio
(75Ω or 110Ω)
AES RX
Delay
AES RX
Delay
15
This module can be mounted in a GeckoFlex
frame when ordered with the 8900V-R GeckoFlex
Video rear module.
8920MUX
Video/audio multiplexer, 75Ω
8920MUX-110
Video/audio multiplexer, 110Ω
8900CTB-04
BNC to terminal block adapter to convert 8920MUX to
8920MUX-110
As serial digital video signals become more
prevalent in production facilities, the demand
for multi-channel audio increases. The
8920MUX provides a cost-effective solution for
inserting or replacing one of the eight available
groups of dual AES streams in a multiplexed
serial digital video signal with embedded AES/
EBU audio. The 8920MUX can multiplex up to
two dual-channel, 20- or 24-bit AES/EBU audio
streams (up to four discrete channels). The 20-
or 24-bit AES streams are grouped together
and given a unique group ID. This AES group
is then inserted into the ancillary data space of
the 525 or 625 serial digital component video
signal. The 8920MUX is able to add a new
AES group into empty ancillary data space, or
it can replace an existing AES group—without
disturbing the remaining AES groups. Digital
audio inputs can be either 75Ω unbalanced or
110Ω balanced.
Key Features
Embeds two AES/EBU streams•
Existing audio remains undisturbed•
Accepts 48 kHz audio•
EDH detection and insertion•
75Ω unbalanced or 110Ω balanced audio•
inputs
Supports networked control and•
monitoring
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 Input
Signal type: AES-3id-1995 (75Ω), AES3 (110Ω)
Number of channels: Four (two AES streams)
Connectors: BNC (75Ω), 8900CTB-04 terminal block
adapter (110Ω)
Sample rate: 48 kHz
Resolution: 20- or 24-bit
Output
Signal type: SMPTE 259M, EBU 3267-E
Connector: Four 75Ω BNC
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, group
present, fault, power, communication active,
configuration, remote override
Controls: Audio group selection
Remote: All indicators and controls via Ethernet
8920MUX Video/Audio Multiplexer (Embedder)
8900CTB-04
110Ω input adapter
For detailed specifications, installation, and setup
instructions see:
www.grassvalley.com/docs/modular
