AES/EBU Input /Output Card (BNC)


The use of XLR cables for AES3 was intended to make the interface familiar and easy to implement. However, the construction of the cable is critical to achieve longer cable runs.

For this reason, in 1995 the AES defined an update to the AES3 protocol to permit unbalanced connections using BNC connectors and 75Ω cables, much like commonly used connections found in video technology. Called AES3-id, it has been widely adopted in broadcast and professional circles, and DiGiCo offers this AES format as an alternative.

This card offers users 4 stereo input and 4 stereo output AES channels over BNC connectors.

Main Features

  • 4 (stereo) AES input channels and 4 (stereo) output channels
  • Sample rate conversion on inputs and outputs
  • Accepts and provides AES signals on BNC connectors
  • Compatible with SD-Range and 4REA4
  • Designed to be hot plugged

Specifications

AES Inputs

Complies with or exceeds AES3 (or IEC-60958 Type I) 2003.

  • Input impedance: 110 Ohm transformer balanced +/- 5%. Optional: 75 Ohm unbalanced +/- 5%
  • Sample rate – input range: 32 kHz to 99 kHz (sample rate conversion on). Sample rate conversion switchable per AES input
  • Sample rate – operating rate: 44.1 kHz*, 48 kHz, 96 kHz +/- 2Hz @ 48 kHz
  • Frequency response: 20 Hz to 20 kHz (0dBFS)
  • Resolution: 24dB (sample rate conversion off)

AES Outputs

Complies with or exceeds AES3 (or IEC-60958 Type I) 2003.

  • Output impedance: 110 Ohm transformer balanced +/- 5%. Optional: 75 Ohm unbalanced +/- 5%
  • Sample rate – operating rate: 44.1 kHz*, 48 kHz, 96 kHz +/- 2Hz @ 48 kHz
  • Output jitter: 120-100K peak 3ns average 800ns. 50-100K peak 5ns average 2.2ns
  • Frequency response: 20 Hz to 20 kHz (0dBFS)
  • Resolution: 24dB (sample rate conversion off). Sample rate conversion switchable per AES output on appropriately specified output modules only
AES/EBU Input /Output Card (BNC)