Home Sound Cards VX222e-Mic STEREO PCM SOUND CARD
  • Overview
  • Specifications

VX222e-Mic STEREO PCM SOUND CARD

Key Workflow:  linear (PCM) stereo sound card for voice-over recordings

VX222e-Mic is a PCI Express stereo sound card  designed for use in any professional PC-based audio system running under Windows or Linux and requiring a microphone input. Thanks to its outstanding audio quality, reliability, and stability, VX222e-Mic is the perfect choice for applications such as voice-over recording for journalists.

At a glance

VX222e-Mic is the reference stereo PCM sound card designed for professional audio systems featuring a microphone input.  Dynamic or condenser microphones can be used thanks to the switchable 48V phantom power, and an on-board analog expander/compressor/limiter allows fine tuning of the microphone signal, before mixing it to each line input. 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 stereo sound card that supports balanced analog and AES/EBU audio
  • Microphone level input for dynamic or condenser microphone, with on-board analog expander/compressor/limiter, mixed with each line level input
  • Interoperable with most party software applications for audio production, under Windows and Linux

Key features

  • Stereo Linear PCM sound card
  • PCI Express bus interface
  • Two balanced analog inputs and outputs, +24 dBu max level
  • One balanced microphone input mixed with each line input (analog gain up to +66dB), with switchable 48V phantom power and adjustable analog expander/compressor/limiter
  • One AES/EBU input with hardware sample rate converter, AES42 compatible (digital microphone), and one AES/EBU output
  • Adjustable input and output analog and digital gains
  • AES11 sync input
  • 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): 1.3 A / 0,22 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): cf. separate table
  • 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

Additional inputs

  • Microphone input:
    – 1 professional mono with
    – high-quality preamplifier
    – switchable 48 V phantom power
    – analog expander/compressor/limiter
    This input is mixed with the two line inputs before A/D conversion
  • Digital input (stereo):
    – 1 AES/EBU, AES42 compatible
    – with hardware sample rate converter (SRC)
    – supplying 10 V to feed a digital microphone
    – allowing remote microphone control
  • Other inputs: AES/EBU Sync (up to 200 kHz)

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

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

Analog mono microphone input features

  • Power supply: switchable 48 V phantom power
  • Programmable mic gain: 0 to 66 dB in 0.5 dB steps
  • Maximum input level/impedance: +10 dBu / >10 kOhms
  • Equivalent Input Noise, A/D-D/A at 48kHz, G=60 dB: <-125 dBu
  • Programmable noise-gate threshold: -52 dB, -42 dB, -32 dB
  • Programmable compressor/limiter threshold: from –26 dB to 0 dB
  • Programmable compressor ratio: 1, 1.2, 1.5, 1.8, 2, 2.5, 3, 3.5, 4, 4.5
  • Programmable compressor/limiter gain: from 0 to 16 dB
  • Limiter ratio: 15:1
  • Compressor/limiter release time: 150 ms
  • Management of line and mic inputs: Mixed together before A/D, with independent level and mute controls

AES42 microphone input features

  • Power supply: 10 V min / 250 mA max
  • Remote control
  • Supported synchronization: Operational mode 1 (the microphone generates its own clock)

Development environments

  • Digigram management under Windows: np SDK
  • Other management under Windows:  Wave (PCM & MPEG Laye II), 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, MPEG Layers I & II play & rec, Layer III play, Float IEEE754,direct monitoring, real-time mixing, level adjustment, panning, cross-fade, punch-in/punch-out, scrubbing, time-stretching, pitch-shifting, 3-band parametric equalizer, maximizer, format and frequency conversions

Benefits

  • Low OPEX: due to low failure rate and high reliability
  • Ongoing product support: from Digigram and its Development Partners
  • Low TCO: no need for additional external mic preamp and expander/limiter/compressor