Grass Valley 8920MUX - Manual (Page 7)

8920MUX Instruction Manual 7
8920MUX Video/Audio
Multiplexer
Introduction
The 8920MUX is a single format Serial Digital (SD) Video/AES3 multi-
plexer that inserts AES/EBU audio into the ancillary data space of
SD 270 Mbit component 525 or 625 digital video. An audio group contains
up to two AES/EBU audio streams. Each audio group in the SD input
signal (up to four groups total) is packaged with a unique identification
(ID). The 8920MUX uses this ID to insert, replace, or delete any one of the
existing groups. The module can also delete all ancillary data contained in
the SD input signal.
The 8920MUX:
• Is a hot-swappable module (can be removed and replaced in the frame
with power on),
• Stores settings in non-volatile memory (if the power to the module is
cycled, the module will maintain its settings),
• Multiplexes up to two AES/EBU audio digital streams,
• Requires 48 kHz AES/EBU streams synchronous or asynchronous
(minimum grade 2 compliant AES audio within ± 50 ppm of the 48 kHz
sample rate) with input SD video,
• Supports Grass Valley Modular Remote Configuration and Monitoring
web browser and Newton Control Panel (with 8900NET module
running software version 3.2.0 or later),
• Supports EDH (error detection and handling) error reporting system
for the video and audio signal,
• Can delete incoming audio groups,
• Can select one of four audio groups to replace or delete, and
• Provides a status display of incoming and inserted/replaced audio
groups.