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.
Features
- 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
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- 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
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Block Diagram
Specifications
| Serial Video Input |
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| Standard | ST 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 |
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| Connector | BNC per IEC 61169-8 Annex A |
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| Equalization |
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| HD | 15m @ 1.5GB/s with Belden 1694A |
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| SD | 300m @ 270MB/s with Belden 1694A |
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| Processed Serial Video Output |
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| Standard | Same as input or user controlled |
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| Number of Outputs | 2 |
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| Connector | BNC per IEC 61169-8 Annex A |
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| Signal Level | 800mV nominal |
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| DC Offset | 0V ±0.5V |
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| Rise And Fall Time | Per standard |
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| Overshoot | < 10% of amplitude |
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| Wide Band Jitter |
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| HD | < 0.16UI |
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| SD | < 0.10UI |
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| Metadata I/O |
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| Type | Dolby-E® Metadata, SMPTE RDD6 |
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| Connector | Femaled B-9 |
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| Baud Rate | 115,200 baud |
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| Vanc Embedding | SMPTE 2020 |
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| AES Audio Input |
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| Standard | SMPTE 276M |
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| Number of Inputs | 8 unbalanced |
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| Connector | Female High Density dB-15 (breakout cable to BNC provided) |
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| Input Level | 0.1 to 2.5V p-p (5V p-p tolerant) |
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| Input Impedance | 75Ω |
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| Return Loss | > 25dB 100kHz to 6MHz |
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| Equalization | Automatic to 1000m with Belden 1694A (or equivalent) @ 48kHz AES signal |
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| Sample Rate | 32kHz to 48kHz |
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| AES Audio Output |
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| Standard | SMPTE 276M, single-ended AES |
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| Number of Outputs | 8 unbalanced |
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| Connector | Female High Density dB-15 (breakout cable to BNC provided) |
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| Sample Rate | 48kHz |
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| Impedance | 75Ω |
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| Resolution | Up to 24-bit |
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| Genlock Input |
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| Type | NTSC, PAL, black or any tri-level, all autodetect |
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| Connector | 1 BNC per IEC 61169-8 Annex A |
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| Impedance | Hi-Z or 75Ω (jumper configurable) |
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| Return Loss | > 40dB to 10MHz |
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| Electrical |
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| Voltage | +12V DC |
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| Power | 21 watts |
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| EMI/RFI | Complies with FCC Part 15 Class A, EU EMC Directive |
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| Physical |
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| Number of Slots | 2 |
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