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7721AE8-HD & 7721AE8-B-HD

HD/SD-SDI 8 AES (16 Channel) Audio Embedder

Interact with this product in a Layout Tool:

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


Serial Video Input

Standard SMPTE 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 Inputs 1
Connector BNC per IEC 61169-8 Annex A

Serial Video Outputs with Embedded Audio

Standard Same as input
Number of Outputs 2 (1 output bypass relay protected)
Embedded Audio SMPTE ST 299-1 - 24 bit 48kHz synchronous/SMPTE ST 272 - 20 bit
Connectors BNC per IEC 61169-8 Annex A
Return Loss > 15dB to 1.5Gb/s
Wideband Jitter < 0.2UI

AES Audio Inputs

Number of Inputs 8
Standard SMPTE ST 276, single ended AES
Connector BNC per IEC 61169-8 Annex A (with DB15 to BNC 6ft Breakout cable)
Resolution 24 bits
Sampling Rate 48kHz synchronous or asynchronous (48kHz synchronous AES required when sample rate converter is disabled)
Impedance 75Ω unbalanced
100Ω balanced
Signal Level 1V p-p ±0.1V @ termination load

Metadata Input

Type Dolby E Metadata SMPTE RDD6
Standard RS-422
Baud Rate 115,200 baud
VANC Embedding SMPTE ST 2020

System Performance

SRC THD+N -140dB
Embedding Latency 0.3ms (HD), 0.7ms (SD), 3ms (with SRC)


Voltage +12V DC
Power 7 watts
EMI/RFI Complies with FCC Part 15, Class A, EU EMC Directive


Number of slots 1

Ordering Information

7721AE8-HD HD/SD 8 AES (16 Channel) Audio Embedder
7721AE8-B-HD HD/SD 8 Balanced AES (16 Channel) Audio Embedder

Ordering Options

Notes Rear plate must be specified at time of order - eg: [model]+3RU
Rear Plate Suffix
+SA Standalone Enclosure Rear Plate
+3RU 3RU rear plate for use with 350FR, 7700FR-C, 7800FR or 7801FR Multiframes


350FR Portable Multiframe which holds 7 single slot modules
7700FR-C 3RU Multiframe which holds 15 single slot modules
7800FR 3RU Multiframe which holds 15 single slot modules
7801FR 1RU Multiframe which holds up to 4 single slot or 2 dual slot modules
S7701FR 7700 Series Standalone Enclosure


7800FC VistaLINK® Frame Controller
CP-2116E-H Remote Control Panel
CP-2232E Remote Control Panel