Product ManualManual

The 7721AE-A4 Analog Audio Embedder performs A/D conversion on 4 balanced pairs of analog audio (as one audio group) and embeds them into a 270Mb/s serial SD input video signal as specified by SMPTE ST 272. The companion 7720AD-A4 Audio De-embedder facilitates audio de-multiplexing at the destination.

The 7721AE-A4 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® PRO.


  • Automatic detection of video input format
  • Supports 270Mb/s SD per SMPTE ST 259-C, and SDTi per SMPTE ST 305
  • Programmable audio delays (up to 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 embedded audio output
  • Comprehensive signal and card status monitoring via four-character card-edge display and LEDs
  • VistaLINK® capable for remote monitoring and control via SNMP (using VistaLINK® PRO) when installed in 7800FR frame with a 7800FC VistaLINK® Frame Controller

Download Datasheet


Serial Video Input
StandardAuto detect
270Mb/s SMPTE ST 259-C, 525 or 625 line component
SMPTE ST 305, (SDTi)
Number of Inputs1
ConnectorBNC per IEC 61169-8 Annex A
EqualizationAutomatic to 300m @ 270Mb/s with Belden 1694 or equivalent cable
Return Loss> 15dB up to 270Mb/s
Serial Video Output
Number of Outputs1 Reclocked Loopback
2 same as input with embedded audio
ConnectorBNC per IEC 61169-8 Annex A
Signal Level800mV nominal
DC Offset0V ± 0.5V
Rise and Fall Time900ps nominal
Overshoot< 10% of amplitude
Return Loss> 15dB at 270Mb/s
Wide Band Jitter< 0.2UI
Analog Audio Inputs
Number of Inputs4
TypeBalanced analog audio
Connector12 pin removable terminal block
ImpedanceHigh 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 Quantization20 bits
Voltage+12V DC
Power10 Watts
EMI/RFIComplies with FCC Part 15, Class A
EU EMC directive
Number of slots1

Ordering Information

7721AE-A4SD-SDI Analog Audio Embedder
Ordering Options
NotesRear plate must be specified at time of order - eg: [model]+3RU
Rear Plate Suffix
+1RU1RU rear plate for use with 7701FR Multiframe
+SAStandalone Enclosure Rear Plate
+3RU3RU rear plate for use with 350FR, 7700FR-C or 7800FR 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
7701FR1RU Multiframe which holds 3 single slot modules
S7701FR7700 Series Standalone Enclosure
7800FCVistaLINK® Frame Controller
CP-2116E-HRemote Control Panel
CP-2232ERemote Control Panel