The 7721AE8-HD Audio Embedder inserts 8 AES audio signals into a 1.5Gb/s HD or 270Mb/s SD video signals as specified in SMPTE ST 299-1 or ST 272 respectively. The companion 7721AD8-HD Audio De-embedder facilitates audio demultiplexing at the destination.

The 7721AE8-HD embeds up to 8 AES audio signals into four groups on the HD/SD outputs allowing dual 5.1 audio applications. The 7721AE8-HD module supports 24-bit AES audio embedding for HD and 20-bit audio embedding for SD. In addition, a full 16x16 audio channel router is available for channel re-mapping.

The 7721AE8-HD is Dolby compliant and automatically disables sample rate conversion on AES inputs to permit seamless Dolby embedding.

VistaLINK® enables control and configuration capabilities via Simple Network Management Protocol (SNMP). This offers the flexibility to manage the module status monitoring and configuration locally or remotely.


  • Audio embedding into 1.5Gb/s HD or 270Mb/s SD video
  • Automatic detection of input video standard
  • Two 1.5Gb/s HD or 270Mb/s SD serial video outputs
  • By-pass relay protection for main program output
  • Supports 24-bit AES audio Embedding for HD and 20-bit AES audio embedding for SD
  • Flexible 16x16 audio channel router for channel re-mapping
  • Dolby compliant with automatic sample rate conversion disable on AES inputs to permit seamless Dolby embedding
  • Dolby Metadata insertion via serial interface
  • Miniature bargraph display to monitor audio content activity
  • Numerous signal monitoring aids
  • Ancillary packet cleaner removes any interfering audio groups prior to embedding
  • User control to force removal of additional audio groups
  • Embeds audio on internally generated black or blue video when there is no video input
  • Card edge LEDs indicate video and audio signal presence and module fault
  • VistaLINK® capable for remote monitoring, control and configuration capabilities via SNMP; using VistaLINK® PRO, CP-2116E or CP-2232E Control Panels. VistaLINK® is available when modules are used with the 3RU 7800FR frame and a 7800FC VistaLINK® Frame Controller module in slot 1 of the frame

Download Datasheet


Serial Video Input
StandardSMPTE ST 292-1 (1.5Gb/s), (1080i/60, 1080i/59.94, 1080i/50, 1080p/30sF, 1080p/29.97sF, 1080p/25sF, 1080p/24sF, 1080p/23.98sF, 720p/60, 720p/59.94), 1035i/60, 1035i/59.94,1080p/30, 1080p/29.97, 1080p/25, 1080p/24, 1080p/23.98, 720p/50)
SMPTE ST 259 (270Mb/s), 525 or 625 line
Number of Inputs1
ConnectorBNC per IEC 61169-8 Annex A
Serial Video Outputs with Embedded Audio
StandardSame as input
Number of Outputs2 (1 output bypass relay protected)
Embedded AudioSMPTE ST 299-1 - 24 bit 48kHz synchronous/SMPTE ST 272 - 20 bit
ConnectorsBNC per IEC 61169-8 Annex A
Return Loss> 15dB to 1.5Gb/s
Wideband Jitter< 0.2UI
AES Audio Inputs
Number of Inputs8
StandardSMPTE ST 276, single ended AES
ConnectorBNC per IEC 61169-8 Annex A (with DB15 to BNC 6ft Breakout cable)
Resolution24 bits
Sampling Rate48kHz synchronous or asynchronous (48kHz synchronous AES required when sample rate converter is disabled)
Impedance75Ω unbalanced
100Ω balanced
Signal Level1V p-p ±0.1V @ termination load
Metadata Input
TypeDolby E Metadata SMPTE RDD6
Baud Rate115,200 baud
VANC EmbeddingSMPTE ST 2020
System Performance
Embedding Latency0.3ms (HD), 0.7ms (SD), 3ms (with SRC)
Voltage+12V DC
Power7 watts
EMI/RFIComplies with FCC Part 15, Class A, EU EMC Directive
Number of slots1

Ordering Information

7721AE8-HDHD/SD 8 AES (16 Channel) Audio Embedder
7721AE8-B-HDHD/SD 8 Balanced AES (16 Channel) Audio Embedder
Ordering Options
NotesRear plate must be specified at time of order - eg: [model]+3RU
Rear Plate Suffix
+SAStandalone Enclosure Rear Plate
+3RU3RU rear plate for use with 350FR, 7700FR-C, 7800FR or 7801FR Multiframes
350FRPortable Multiframe which holds 7 single slot modules
7700FR-C3RU Multiframe which holds 15 single slot modules
7800FR3RU Multiframe which holds 15 single slot modules
7801FR1RU Multiframe which holds 4 single slot modules
S7701FR7700 Series Standalone Enclosure
7800FCVistaLINK® Frame Controller
CP-2116E-HRemote Control Panel
CP-2232ERemote Control Panel