The 7720AD8-DD-HD Audio De-embedder and Dolby® Decoder & Reembedder extracts embedded audio from four specified groups as defined by ST 299-1 from a 1.5GB/s serial HDTV or as defined by SMPTE ST 272 from a 270MB/s serial SDTV video signal.

One selected channel is processed by the on-card Dolby® Decoder. If the channel contains Dolby-E® or Dolby® Digital (AC-3), it will yield up to eight additional discrete audio channels, two channels of stereo downmix and the associated Dolby-E® Metadata. Up to 16 selected channels may be optionally delayed up to 1.2s and re-embedded into the output video and/or directed to AES outputs. Video output may be optionally delayed to help with lip sync. If PCM audio is embedded, the device acts as a simple four group audio de-embedder.

This device also handles the Dolby-E® Metadata. Metadata is optionally embedded in VANC and can be provided as an output for downstream devices (i.e. Dolby Encoders, Multichannel Audio Tool, etc.). Metadata can be monitored using VistaLINK® and dial norm parameters can be modified.

For lip sync cohesion and ease of editing, Dolby-E® data is organized in blocks with lengths matching the associated video frame. The decoder will match the beginning of each output block with the start of video, as provided with the genlock input. Additional delay can be dialed up by the user, up to 1.2 secs. The eight AES inputs can be configured as a backup, in the event the primary is lost, or as a voice-over source.

IntelliGain® Audio and Loudness Processor

  • Consistent audio loudness levels within a channel and/or program
  • Automatic detection and level adjust for loud commercials
  • Gain control within a program interval to preserve audio dynamic range
  • Artifact-free transitions between program and commercials
  • Elimination of drastic volume changes during commercials and interstitials

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® PRO locally or remotely.

Download Datasheet


  • Audio de-embedder and re-embedder for four groups of audio
  • Dolby E/AC-3™ decoding for selected audio source
  • Dolby Metadata is embedded in HD VANC for downstream device decoding
  • Eight AES inputs for backup, voice-over or Dolby E/AC-3™ content
  • Adjustable video delay to match Dolby® decoder audio delay
  • Automatic switchover to backup audio source on loss of selected Dolby stream
  • Headphone jack for monitoring stereo down-mix or any input source
  • Two full audio mixers with 16 output channels
  • Card edge display
  • 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
  • Inputs
  • Program input supporting both HD (1.5GB/s) and SD (270MB/s)
  • Reference input supporting NTSCM, PAL-B and tri-level for meta data phasing
  • Eight AES inputs for backup/voice-over source
  • Metadata input
  • Outputs
  • Two processed HD outputs (one protected with bypass relay)
  • Eight AES de-embedded and processed outputs
  • One DB-9 Dolby metadata (RS-422/485) on same connector as input
  • Card Edge LEDs
  • Module Status
  • Video Signal presence
  • Selected audio group presence
  • Dolby decoder processing status
  • Genlock health/compatibility
  • AES signal presence


Serial Video Input
StandardST 292-1, (1080i/60, 1080i/59.94, 1080i/50, 1080p/30 (sF), 1080p/29.97 (sF), 1080p/25 (sF), 1080p/24 (sF), 1080p/23.98 (sF), 720p/50,720p/60, 720p/59.94, 1035i/60, 1035i/59.94)
SMPTE ST 259-C (270MB/s) 525 or 625 line component
ConnectorBNC per IEC 61169-8 Annex A
HD15m @ 1.5GB/s with Belden 1694A
SD300m @ 270MB/s with Belden 1694A
Processed Serial Video Output
StandardSame as input or user controlled
Number of Outputs2
ConnectorBNC per IEC 61169-8 Annex A
Signal Level800mV nominal
DC Offset0V ±0.5V
Rise And Fall TimePer standard
Overshoot< 10% of amplitude
Wide Band Jitter
HD< 0.16UI
SD< 0.10UI
Metadata I/O
TypeDolby-E® Metadata, SMPTE RDD6
ConnectorFemaled B-9
Baud Rate115,200 baud
Vanc EmbeddingSMPTE 2020
AES Audio Input
StandardSMPTE 276M
Number of Inputs8 unbalanced
ConnectorFemale High Density dB-15 (breakout cable to BNC provided)
Input Level0.1 to 2.5V p-p (5V p-p tolerant)
Input Impedance75Ω
Return Loss> 25dB 100kHz to 6MHz
EqualizationAutomatic to 1000m with Belden 1694A (or equivalent) @ 48kHz AES signal
Sample Rate32kHz to 48kHz
AES Audio Output
StandardSMPTE 276M, single-ended AES
Number of Outputs8 unbalanced
ConnectorFemale High Density dB-15 (breakout cable to BNC provided)
Sample Rate48kHz
ResolutionUp to 24-bit
Genlock Input
TypeNTSC, PAL, black or any tri-level, all autodetect
Connector1 BNC per IEC 61169-8 Annex A
ImpedanceHi-Z or 75Ω (jumper configurable)
Return Loss> 40dB to 10MHz
Voltage+12V DC
Power21 watts
EMI/RFIComplies with FCC Part 15 Class A, EU EMC Directive
Number of Slots2

Ordering Information

NotesRequires 7700FC for full module control
7720AD8-DD-HDHD/SD-SDI Audio De-embedder & Dolby-E®/AC-3 Decoder & Re-embedder
Ordering Options
NotesRear plate must be specified at time of order - eg: [model]+3RU
+IGIntelliGain Loudness Processor
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
WPAES8-BNCM-6FCable (included)