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LynxTechnik yellobrik 3Gbit AES Audio Embedder / Deembedder (75Ohm BNC - Unbalanced AES)

Product Code LYPDM1284B
Manufacturer LynxTechnik

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The PDM 1284 B is a versatile AES audio embedder/de-embedder designed for a wide range of SDI video formats up to 3Gbit. It supports unbalanced AES3id audio I/O using BNC connectors.

Select audio groups using the rotary switches and embed or de-embed additional audio groups by cascading two modules together.

AES 1+2 and AES 3+4 are independent channels, which means that in addition to being used as a 4 x AES embedder/de-embedder, the PDM 1284 B can also function as a 2 x AES embedder/de-embedder. Each channel is configured using the dip switches and rotary switches.

An optional fibre I/O adds fibre transceiver functionality for embedding and de-embedding directly from the fibre I/O. When the fibre input is used both fibre and electrical SDI outputs are provided.

The PDM 1284 B automatically detects the audio format and de-selects the sample rate converters to preserve encoded bit streams such as DolbyE. (Sample rate converters can be permanently switched off using the dip switch).

The selectable "auto black" mode uses a black video frame if no SDI input is present, which allows the module to embed audio even when no video source is available. This mode is useful if the application is only transporting multi-channel audio between locations either electrically or over fibre.

The selectable 1 kHz test tone generator is integrated for audio testing purposes. The module includes an LED for video present indication as well as two multi-colour audio status LEDs.

Key Features

  • Multi-function:
    • 4 x AES embedder or de-embedder
    • 2 x AES embedder and de-embedder
  • SDI video formats up to 3Gbit (1080p60)
  • 4 x AES inputs or outputs
  • Selectable audio groups
  • Optional Fibre I/O
  • Integrated 1 kHz test tone generator
  • Automatic PCM / encoded audio detection
  • Auto black if no video present
  • Selectable SDTV 24 bit mode
  • Video present and audio status LEDs


SDI Input

  • 1 x SDI video on 75 Ohm BNC connector
  • SMPTE 424M, SMPTE 292M, SMPTE 259M
  • Multi-standard operation from 270Mbit/s to 3Gbit/s
  • SDTV (525/625) 
  • 720p and 1080p (23.98/24/25/29.97/30/50/59.94/60 Hz)
  • 1080psf (23.98/24/25/29.97/30 Hz)
  • 1080i (50/59.94/60 Hz) 
  • Return Loss: > 15dB to 1.5Gbit/s and > 10dB up to 3Gbit/s 
  • Automatic cable EQ (Belden 1694A cable) 250m @ 270Mbit/s, 140m @ 1.5Gbit/s, 80m @ 3Gbit/s

Optical I/O (Option)

  • 1 x fibre optic input and output 
  • LC/PC singlemode fibre connection (see table)
  • SMPTE 297M - 2006

SDI Output

  • 1 x SDI video on 75 Ohm BNC connector
  • SMPTE 424M, SMPTE 292M, SMPTE 259M
  • Multi-standard operation from 270Mbit/s to 3Gbit/s

AES I/O (switchable)

  • 4 x AES3id unbalanced inputs or outputs on 75 Ohm BNC connectors
  • AES group selection provided via rotary switch


  • +12VDC power supply (included)


  • 105mm x 95mm x 22mm (4.13" x 3.74" x 0.86")

Model #

  • PDM 1284 B


  • Module
  • Power supply
  • SubD screw terminal adapter PCB 
  • Mounting brackets

Equipment available to buy from this site is for professional use only. Please note in certain countries some products listed may not be available from A.C. Entertainment Technologies Ltd.

E&OE. Information is subject to change without notice. The rights and ownership of all trademarks are recognised.


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