Linear PCM stereo stereo sound card for professional stereo audio workstations. VX222e is a professional linear (PCM) stereo sound card based on the PCI Express bus interface. It is designed for use in any professional PC-based audio system running under Windows or Linux and requiring balanced analog and AES/EBU connectivity.

At a glance

VX222e is the reference stereo PCM sound card designed for operating in continuous 24/7/365 use-environments as part of professional audio systems. 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
• High audio quality sound card that supports balanced analog and AES/EBU audio
• Interoperable with most third party software applications for audio production, under Windows and Linux

Key features

• Stereo Linear PCM card
• PCI Express bus interface
• Two balanced analog inputs and outputs, +24 dBu max level
• One AES/EBU input/output
• Adjustable input and output analog and digital gains
• On-board 3-band parametric EQ and Maximizer effects
• Two GPI (dry contact) and two GPO (relays)
• Support for Linux (Alsa driver) and Windows 32-bit and 64-bit (WDM kernel streaming, DirectSound, Wasapi, ASIO)
• Breakout cables with XLR connectors for audio connectivity

Configuration

• Bus/Format: PCI EXPRESS™ (PCIe®) x1 (x2, x4, x8, x16, x32 compatible)
• Size: 168 mm x 99 mm x 20 mm
• Power requirements (+3.3V/ +12V): 1 A / 0.2 A
• 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): 2 balanced
• Maximum input level/impedance: +24 dBu / >10 kOhms
• Digital inputs (stereo): 1 AES/EBU
• Programmable input gain:
  – analog: from –94 dB to +16 dBÄ
  – digital: from –110 dB to +18 dB
• Other inputs: 2 GPI (dry contact), LTC
• AES11 synchronization

Outputs

• Analog line outputs (mono): 2 servo-balanced
• Maximum output level / impedance: +24 dBu / < 100 Ohms
• Digital outputs (stereo): 1 AES/EBU, up to 200 kHz
• Programmable output gain:
  – analog: from –24 dB to +24 dB
  – digital: from –110 dB à +18 dB
• Other outputs: 1 stereo headphone output (600 W) 2 GPO (relay, 0.5 A, 48 VCC)

Connectors

• Internal connector: Inter board synchronization
• External connectors:
  – 15-pin Sub-D for analog I/Os
  – 15-pin HD Sub-D for digital I/Os, Sync., and GPIO
  – Mini jack headphone stereo output (3,5 mm TRS female jack)

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

Analog audio performance

• Frequency response (record + play):
  – at 48 kHz: 20 Hz – 20 kHz: +0 /-0.3 dB
  – at 96 kHz: 20 Hz – 40 kHz: +0 /-0.4 dB
  – at 192 kHz: 20 Hz – 80 kHz: +0 /-1.1 dB
• Channel phase difference: 20/20kHz: <0.2°/2°
• Dynamic range (A-weighted):
  – analog In: >104 dB
  – analog Out: > 106 dB
• THD + noise 1 kHz at –2 dBfs:
  – analog In: <–97 dB
  – analog Out: <-95 dB
• Crosstalk (Analog in or out):  1 kHz at 24 dBu: <–115 dB, 15 kHz at 24 dBu: <-100 dB

SUPPORTED OS

• Windows 10
• Windows Server 2016
• Linux

Development environments

• Digigram management under Windows: np SDK (PCM)
• Other management under Windows:  Wave, WASAPI, ASIO, DirectSound, Alsa (all PCM)
• OS supported: from Windows 7 and Windows server 2003 (32-bit and 64-bit versions), Linux
• Main on-board processing features (with np SDK): PCM play & rec, Float IEEE754,direct monitoring, real-time mixing, level adjustment, panning, cross-fade, punch-in/punch-out, scrubbing, 3-band parametric equalizer, maximizer, format and frequency conversions