The 7721AE-A4-HD Analog Audio Embedder performs A/D conversion on 4 balanced pairs of analog audio (as one audio group) and embeds them into a 1.5Gb/s serial HD input video signal or a 270Mb/s serial SD input video signal as specified by SMPTE ST 299-1/ST 272. The companion 7721AD-A4-HD Audio De-embedder facilitates audio de-multiplexing at the destination.

The 7721AE-A4-HD occupies one card slot and can be housed in the 1RU 7801FR frame which holds up to four single or two dual slot modules, the 3RU 7800FR frame which has a 15 slot capacity, the portable 3RU 350FR frame which has a 7 slot capacity, or a standalone enclosure which holds a single module.

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®.


  • Automatic detection of video input format
  • Supports 1.5Gb/s HD per SMPTE ST 292-1, 270Mb/s SD per SMPTE ST 259-C, and SDTi per SMPTE ST 305
  • Programmable audio delays (the lesser of 5 frames or 84 milliseconds)
  • Selectable ancillary packet cleaning mode removes all audio before embedding
  • Individual audio channel assignment for embedded audio group
  • Audio mixer per audio channel to provide voice-over
  • Upstream embedded Dolby E® compatible (passed through)
  • Monitoring headphone jack for audio input and embedder group channels
  • Comprehensive signal and card status monitoring via four-character card-edge display and LEDs
  • 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 Auto detect
1.5Gb/s SMPTE ST 292-1 or
270Mb/s SMPTE ST 259-C 525 or 625 line component,
Number of Inputs 1
Connector BNC per IEC 61169-8 Annex A
Equalization Automatic to 300m @ 270Mb/s, 110m @ 1.5Gb/s with Belden 1694A or equivalent cable
Return Loss > 15dB up to 270Mb/s

Serial Video Output

Number of Outputs 1 Reclocked Loopback
2 same as input with embedded audio
Connector BNC per IEC 61169-8 Annex A
Signal Level 800mV nominal
DC Offset 0V ± 0.5V
Rise and Fall Time 900ps nominal
Overshoot < 10% of amplitude
Return Loss > 15dB at 270Mb/s
Wide Band Jitter < 0.2UI

Analog Audio Inputs

Number of Inputs 4
Type Balanced analog audio
Connector 12 pin removal terminal block
Impedance High Impedance (> 20kΩ)
Frequency Response ±0.1dB, 20Hz to 20kHz
THD < 0.005% (20Hz - 20kHz)
Channel Phase Diff. ±1°
SNR > 85dB with input @ 24dBu (nominal) (weighted)
Max. Audio Input Level +24dBu
Signal Quantization 24 bits


Voltage +12V DC
Power 10 watts
EMI/RFI Complies with FCC Part 15, Class A, EU EMC directive


Number of slots 1

Ordering Information

7721AE‑A4‑HD HD/SD Analog 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 4 single slot modules
S7701FR 7700 Series Standalone Enclosure


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