7700 MultiFrame Manual
7721AE4-(B)-HD HDTV 4 Channel AES Audio Embedder
Revision
1.5
Page-1
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.
Vista
LINK
®
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
Vista
LINK
®
Pro locally or remotely.
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
Vista
LINK
®
•
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
•
Vista
LINK
®
control capabilities for module configuration.
Vista
LINK
®
capabilities are available
when modules are used with the 3RU 7700FR-C frame and a 7700FC
Vista
LINK
®
Frame
Controller module in slot 1 of the frame
•
Front panel LEDs indicate video and audio signal presence and module fault
