Digital Audio Denmark DAD CARD 2SDI Dual 3G/HD/SD SDI Audio Embedder/deembedder Card for Penta 720

The Penta 720-210 card is a dual 3G/HD/SD SDI audio embedder/deembedder card for insertion in the Penta 720 Modular I/O router interface. 8 cards can be installed providing a total of 16 3G/HD/SD SDI embedder/deembedders in one unit.

The 720-210 card offers multi format support for SDI formats up to 3G with auto detection of the input format, and can be used for a variety of different applications in an embedded audio and video environment.

The 720-210 card interfaces the embedded audio signals via the internal bus of the Penta 720 and each card provides two times 16 input and 16 output audio channels, giving a total of 256 I/O channels which are interfaced to the matrix core and I/O interfaces.

Penta 720 provides 192 channels on 3 MADI I/Os, 8 AES3 I/O channels (16 mono channels), 64 channels via Pro Tools HDX™ interface, and 64 channels via the NTP IP Ethernet interface powered by Dante.

The Penta 720-210 card is a dual 3G/HD/SD SDI audio embedder/deembedder card, which has two separate sets of embedders and deembedders compliant with the relevant SMPTE standards for SD, HD and 3G video SDI signals, and audio embedding and deembedding. Some legacy formats for SD in relation to asynchronous AES sources are however not implemented.

Each channel of the Penta 720-210 card has a separate embedder and deembedder which can operate independently or together. In order to embed audio in the SDI video signal a video input has to be applied, since the cards does not have an on board video frame generator.

Deembedding of the audio is always enabled. Sample rate conversion can be enabled for the four embedded audio groups individually. Each embedded audio group consist of two AES/EBU channels i.e. 4 mono channels. The multiplexer/router of the Penta 720 will relate to all audio which is available in the groups.

The frequency of the incoming video can be asynchronous to the audio sample rate of the Penta 720 Multiplexer/router or a different sample rate, In this case ‘Rx Src’ has to be selected when enabling the audio groups. The Penta 720 frame is normally synchronised to a “house” reference clock signal, which can be different from or equal to the clock reference for the video signal.

The embedder can be configured for each audio group to insert audio synchronously, asynchronously or sample rate converted. Incoming audio groups can also be dropped without insertion or passed trough.

If the frequency of the incoming video is asynchronous to the audio sample rate the ‘src’ mode has to be selected. Only audio groups that are configured to be inserted can be routed from the Penta 720 Multiplexer/router.

Note that the Penta 720-210 card does not incorporate delay buffers for the audio for alignment of the audio to an inherent video delay. The processing of the audio on the cards has a delay of about 10 Samples.

General
• Signal type compliance: Serial digital video acc. to SMPTE

• Formats: SD
292M, 424M, 259M, SMPTE 425 A+B
525 / 59.94Hz, 625/50Hz

• Formats: HD
720p / 60 / 59.94 / 50 / 30 / 29.97 /
25 / 24 / 23.98 Hz
1080i / 60 / 59.94 / 50 Hz
1080p / 30 / 29.97 / 25 / 24 / 23.98 Hz
1080psF / 25 / 24 / 23.98 Hz

• Formats: 3G: 1080p / 60 / 59.94 / 50 Hz (Level A)

• Return Loss
>15dB (270Mbit and 1.48 Gbit)
> 10dB (2.97Gbit)

• Input impedance: 75 Ohm
• Connector: BNC

SDI input
• Signal Type: 3G/HD/SD with automatic video format and standard detection,
• No. of inputs: 2
• Cable length 3G/HD/SD: 120/180/320 m (Belden 1694A)

SDI output
• Signal Type
3G/HD/SD .Output format
Follows input format

• No. of outputs: 2
• Timing Jitter: 3G/HD/SD: < 2.0/1.0/0.2 UI
• Alignment Jitter: 3G/HD/SD: < 0.3/0.2/0.2 UI

Audio I/O, processing
• No. of inputs/outputs: 16 channel on each SDI I/O

• Deembedding modes
16 channels, selectable SRC
for Gr. 1 to Gr. 4, Selectable pass
trough or drop for all channels

• Embedding modes
16 channels, selectable for
Gr. 1 to Gr. 4 Pass trough, Insert synchronously,
asynchronously or with SRC

• Audio/Video sync: Synchronously or asynchronously with SRC
• Sample rates: 32, 44,1 and 48 kHz.