Overview - evertz 7721AE4-HD Manual

1.

OVERVIEW

The 7721AE4-HD Audio Embedder inserts AES audio signals into a 1.5Gb/s SDI video signal as specified
in SMPTE 299M. The companion 7721AD4-HD Audio De-embedder facilitates audio demultiplexing at the
destination.
SMPTE 299M allocates four groups of four audio channels that can be embedded into the SMPTE 292M
bitstream. The 7721AE4-HD embeds up to 4 AES audio into two selectable groups on the SDI outputs for
discrete 5.1 audio applications. The 7721AE4-HD is Dolby E compliant when the sample rate converters
are turned off.
VistaLINK enables control and configuration capabilities via Simple Network Management Protocol
®
(SNMP). This offers the flexibility to manage the module status monitoring and configuration from SNMP
enabled control systems such as Evertz VistaLINK
Features:
•
Automatic detection of video input format
•
Bypass relay protection on one HD SDI output for power failures
•
24-bit AES input and audio embedding
•
Individual audio group assignment for each group
•
Group lock mode maintains phase relationship between the groups for 5.1 audio applications
•
Sample rate conversion disabled on AES inputs to permit Dolby E embedding
•
Programmable audio delays (up to 7 frames in ½ video field resolution) using DIP switches or (up
to 1365.313 ms in 1 sample increments) via VistaLINK
•
Ancillary packet cleaning mode removes all audio before embedding
•
Ancillary packet reformatting mode left justifies and removes unused packets before embedding
•
Embeds audio on internally generated black or blue video when there is no video input
•
VistaLINK control capabilities for module configuration. VistaLINK
®
when modules are used with the 3RU 7700FR-C frame and a 7700FC VistaLINK
Controller module in slot 1 of the frame
•
Front panel LEDs indicate video and audio signal presence and module fault
7721AE4-HD HDTV 4 Channel AES Audio Embedder
Pro locally or remotely.
®
®
Revision 1.4
7700 MultiFrame Manual
capabilities are available
®
Frame
®
7721AE4-HD-1