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The 7720AD4 series Audio De-Embedders extract embedded audio as specified by SMPTE ST 272 from a 270Mb/s serial digital video signal. The companion 7720AE4 Audio Embedder facilitates audio multiplexing at the source. The 7720AD4 is available in 4 different versions.
SMPTE ST 272 allows for up to four groups (4 channels/group) to be embedded within a serial digital signal. The 7720AD4 can de-embed two audio groups onto four unbalanced AES outputs. The 7720AD4-B can de-embed two audio groups onto four balanced AES outputs. The 7720AD-A4-2 can de-embed one audio group onto two unbalanced AES outputs and 4 balanced analog audio outputs.
Features
- Card edge LEDs indicating module status, video presence, selected audio group data is present
- LED indication for the presence of each of the 4 audio groups within the input video
- Audio group selection via card edge DIP switches
- Audio channel swapping selection via card edge DIP switches (not on 7720AD-A4-2)
- Analog audio output models have independent volume controls for each of the audio channel outputs
- 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
Output Organization
| Model | Audio Outputs | Video 270Mb/s SDI Reclocked Outputs | VistaLINK® Enabled | |
|---|---|---|---|---|
| AES | Analog | |||
| 7720AD-A4-2 | – | 4 | 2 |  |
| 7720AD4 | 4 Unbalanced | – | 2 | |
| 7720AD4-B | 4 Balanced | – | 1 | |
Specifications
Serial Video Input | |
|---|---|
| Standard | SMPTE ST 259-C -525 & 625 component |
| Connector | 1 BNC per IEC 61169-8 Annex A |
| Equalization | Automatic 300m @ 270MB/s with Belden 8281 or equivalent cable |
| Return Loss | > 13dB up to 270MB/s |
Reclocked Serial Video Outputs | |
|---|---|
| Standard | Same as input |
| Number of Outputs | 1 on 7720AD4-B, 2 on 7720AD4 and 7720AD-A4-2 |
| Connectors | BNC per IEC 61169-8 Annex A |
| Signal Level | 800mV nominal |
| DC Offset | 0V ±0.5V |
| Rise And Fall Time | 700ps nominal |
| Overshoot | < 10% of amplitude |
| Wide Band Jitter | < 0.2UI |
Unbalanced AES Audio OutputsNot on -B versions | |
|---|---|
| Standard | SMPTE 276M, single ended synchronous AES |
| Number of Outputs | 4 on 7720AD4 |
| Connectors | BNC per IEC 61169-8 Annex A |
| Sampling Rate | 48kHz |
| Impedance | 75Ω unbalanced |
| Dynamic Range | 20-bit |
Balanced AES Audio Outputs-B versions only | |
|---|---|
| Standard | AES3-1992 |
| Number of Outputs | 4 on 7720AD4-B |
| Connector | Terminal strip |
| Sampling Rate | 48kHz |
| Impedance | 110Ω balanced |
| Dynamic Range | 20-bit |
Analog Audio OutputsA4 Versions Only | |
|---|---|
| Number of Outputs | 4 |
| Type | Balanced analog audio |
| Connector | Terminal strip |
| Output Impedance | 66Ω balanced |
| Sampling Frequency | 48kHz |
| Signal Level | 0dB FS => 8 to 24dBu into 10kΩ loads (user settable) 0dB FS => 8 to 22dBu into 600Ω loads (user settable) |
| Frequency Response | < ±0.1dB (20Hz to 20kHz) |
| THD+N | > 90dB RMS @ 1kHz, with 24dBu output > 100dB RMS @ 20Hz to 20kHz, with 24dBu output |
| Crosstalk Isolation | > 100dB RMS (20Hz to 20kHz) |
Electrical | |
|---|---|
| Voltage | +12V DC |
| Power | 12 watts |
| EMI/RFI | Complies with FCC Part 15, Class A EU EMC Directive |
Physical | |
|---|---|
| Number of Slots | 1 |
Ordering Information
| 7720AD‑A4‑2 | SD-SDI AES Audio De-embedder with 4 balanced analog audio outputs |
|---|---|
| 7720AD4 | SD-SDI AES Audio De-embedder with 4 unbalanced AES outputs (2 audio groups) |
| 7720AD4‑B | SD-SDI AES Audio De-embedder with 4 balanced AES outputs (2 audio groups) |
Ordering Options | |
|---|---|
| Notes | • Rear plate must be specified at time of order - eg: [model]+3RU |
| Rear Plate Suffix | |
|---|---|
| +1RU | 1RU rear plate for use with 7701FR Multiframe |
| +SA | Standalone Enclosure Rear Plate |
| +3RU | 3RU rear plate for use with 350FR, 7700FR-C or 7800FR Multiframes |
Enclosures | |
|---|---|
| 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 |
| 7701FR | 1RU Multiframe which holds 3 single slot modules |
| S7701FR | 7700 Series Standalone Enclosure |
Accessories | |
|---|---|
| 7800FC | VistaLINK® Frame Controller |
| CP-2116E-H | Remote Control Panel |
| CP-2232E | Remote Control Panel |