VX882e – Multichannel PCM Sound Card

 

VX882e

Key Workflow: Linear PCM multichannel stereo sound card for professional audio workstations

VX882e is a professional linear (PCM) multichannel sound card based on the PCI Express bus interface. It is designed for use in any professional system running under Windows or Linux. It is a reference card in radio broadcast automation for applications such as automated recording and play-out and multichannel production.

At a glance

VX882e features  eight input and output channels and offers balanced analog and AES/EBU connectivity, with the possibility to synchronize on an external clock (AES11, Word clock, black burst video).  It can be used under Windows or Linux operating systems, with software applications based on standard driver interfaces such as WDM Kernel streaming, DirectSound,  Wasapi, and ASIO for Windows, and Alsa for Linux.

  • Developed for the broadcast industry
  • Supports balanced analog and AES/EBU audio
  • Interoperable with most third party software applications for audio production, under Windows and Linux

Key features

  • Multichannel linear PCM sound card
  • PCI Express bus interface
  • Eight balanced analog inputs and outputs, +24 dBu max level
  • Four AES/EBU inputs/outputs, with hardware sample rate converter on each AES/EBU input
  • Adjustable input and output analog and digital gains
  • On-board 3-band parametric EQ and Maximizer effects
  • Support for Linux (Alsa driver) and Windows 32-bit and 64-bit (WDM Kernel streaming, DirectSound, Wasapi, ASIO)
  • Breakout cable or breakout box (BOB8)  with XLR connectors for audio connectivity

Benefits

Low OPEX

low failure rate and high reliability

Low TCO

& future-proofed

Ongoing product support

from Digigram and its Development Partners

Specifications

Configuration
  • Bus/Format : PCI EXPRESS™ (PCIe®) x1, (x2, x4, x8, x16, x32 compatible)
  • Size : 168 mm x 111 mm x 20 mm
  • Power requirements (+3.3V / +12V) :  2.5A / 0.5A
  • Operating: temp / humidity (non-condensing) : 0°C/+50°C • 5%/90%
  • Storage: temp / humidity (non-condensing) : -5°C/+70°C • 0%/95%
Inputs
  • Analog line inputs (mono) : 8 balanced*
  • Maximum input level/ impedance : +24 dBu/ >10 kOhms
  • Digital inputs (stereo) : 4 AES/EBU** with hw Sample Rate Converters, 7.5:1 to 1:8, up to 192 kHz
  • Programmable input gain : analog: from –94.5dB à +15.5 dB (maximum sensitivity: 0 dBFs for –15.5 dBu input), digital: from –110 dB to +18 dB
  • Other inputs : AES/EBU Sync (up to 192 kHz), Word clock (up to 96 kHz), LTC, Video
  • AES11 synchronization : Yes
Outputs
  • Analog line outputs (mono) : 8 servo-balanced***
  • Maximum output level / impedance : +24 dBu / <100Ohms
  • Digital outputs (stereo) : 4 AES/EBU**, up to 192 kHz
  • Programmable output gain : analog: from –86 dB to +24 dB / digital: from –110 dB to +18 dB
  • Other outputs : Word clock (up to 96 kHz)
Connectors
  • Internal connectors : Inter-board Sync
  • External connector : 68-pin SCSI MDR
  • Digigram accessories available : Breakout cable or 2U 19″ Breakout Box
Audio specifications
  • Sampling frequencies available :  Programmable from 8 to 192 kHz
  • A/D and D/A converter resolution : 24 bits
  • Supported audio formats : PCM (8, 16, 24 bits), Float IEEE754
Audio Performance measured at Fs=48 kHz
  • Frequency response (record + play) : 20 Hz–20 kHz: ±0.2 dB
  • Channel phase difference: 20/20kHz : <0.2°/2°
  • Dynamic range (A-weighted) : Analog In: >104 dB / Analog Out: >104 dB
  • THD + noise 1 kHz at –1 dBfs : Analog In: <–97 dB / Analog Out: <–94 dB
  • Crosstalk (Analog in or out) : 1 kHz at 24 dBu: <–100 dB / 15 kHz at 24 dBu: <–85 dB
Sample rate converter performance

Maximum frequency: 192 kHz
Frequency ratio: from 1:8 to 7,5:1
THD + noise 1 kHz at –2 dBfs: <-130 dB

    Development environments
    • Digigram management : np SDK (PCM only)
    • Other management : Wave, ASIO, DirectSound,WASAPI, ALSA
    • OS supported : Windows 32bit and 64 bit versions, Linux
    • Main on-board processing features (available through the Digigram np SDK) : PCM play, rec, Float IEEE754, direct monitoring, real-time mixing, level adjustment, panning, cross-fade, punch-in/punch-out, scrubbing

        * can be used with unbalanced signals
       ** can be used as S/PDIF interface as well
      *** electronically servo-balanced outputs provide automatic level adjustment to accommodate either balanced or unbalanced lines

      Q&A

      VX/PCX

      How can I adjust my VX/PCX audio levels

      When the driver is installed, the DHS software (Digigram Hardware Settings" is installed. Just run that software to have access to the IN/OUT level adjustments.

      How to select the AES input ?

      In the DHS you have to set the clock to AES/EBU Sync to be able to select the AES input.

      I am facing a BSOD when using my VX sound card

      We face issue on HP computer with the DMA management. To avoid BSOD, you have to disable the DMA protection in the BIOS

      My recent HP computer do not boot with a VX, PCX or LX-MADI sound card

      We identified that some recent Hewlett-Packard computers (HP Z1 G6, HP ProDesk 400 G7, HP Elitedesk 800 G6, HP ProDesk 600 G6 Microtower PC, HP Z2 G8 Tower Workstation, HP ProLiant DL360, HP Proliant DL380) don't boot with VX, PCX and LX-MADI PCIe sound cards. This is due to problem on recent HP motherboard not compatible with the PCIe bridge used on the cards. This has been fixed by HP with a BIOS update available on support.hp.com./

      If you encounter similar problems with other HP references, kindly have a check in the support.hp.com  website for individual BIOS updates since there is no constant firmware available for all of these models.

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