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SGI PCI Digital Audio Option

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This option provides digital audio I/O, ADAT I/O, and synchronization of system audio to professional video devices. It is supported in SGI O2, SGI Octane, SGI Onyx2, SGI Origin 2000, SGI Origin 200 PCI slots. Up to three cards per system supported in this initial release.

General:

  • 32 bit PCI option card - half-size.
  • System expansion by addition of identical cards.
  • SGI Software compliant
    • SGI Audio Library (AL) Application Programming Interface
    • UST/MSC digital media synchronization support
  • Locks to professional video and audio gear
    • locks to video via external reference or system synchronization backbone
    • locks to audio references
  • Accepts video reference input, generates AES11-1992 grade 2 (10ppm) clocks.

Sample Rates (kHz):

  • Generalized support of sample rates: 32 kHz through 50 kHz including the following rates:
    • 32kHz,
    • 44.056kHz pull-down,
    • 44.1kHz including VCXO jitter attenuation,
    • 44.144kHz pull-up,
    • 47.952kHz pull-down,
    • 48kHz including VCXO jitter attenuation,
    • 48.048kHz pull-up
  • Master timebases include:
    • internal crystal oscillators
    • Video Reference (internal or external)
    • AES11 input
    • ADAT Optical input

Video Reference Loop Through

  • 75 ohm BNC connectors
  • Black Burst NTSC or PAL

Coaxial Digital Audio Input

  • AES-3id 75 ohm BNC connector
  • AES11-1992 synchronization input (for audio clock rates)
  • AES3-1997 professional 2-channel 24 bit digital
  • compatible with IEC958, S/PDIF consumer 2-channel digital

Coaxial Digital Audio Output

  • AES-3id 75 ohm BNC connector
  • AES11-1992 synchronization output
  • AES3-1997 professional 2-channel 24 bit digital
  • compatible with IEC958, S/PDIF consumer 2-channel digital

ADAT Optical Digital Input

  • 12.8Mbps EIAJ RCZ-6901 fiber optic connector, PCI I/O panel
  • 8-channel, 24 bit
  • Professional Interfaces Available (break-out boxes):
    • Analog to Digital Converters
    • AES3-1997 inputs
    • ADAT 8-channel 16-bit tape machine, Roland DAWs, many more...
  • compatible with IEC958, S/PDIF consumer 2-channel digital

ADAT Optical Digital Output

  • 12.8Mbps EIAJ RCZ-6901 fiber optic connector, PCI I/O panel
  • 8-channel, 24 bit
  • Professional Interfaces Available (break-out boxes):
    • Digital to Analog Converters
    • AES3-1997 outputs
    • ADAT 8-channel 16-bit tape machine, Roland DAWs, many more.
  • compatible with IEC958, S/PDIF consumer 2-channel digital