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DATAPixx

Video I/O Hub

The DATAPixx is a complete multi-function data and video processing USB peripheral for vision research. In addition to a dual-display video processor, the DATAPixx includes an array of peripherals which often need to be synchronized to video during an experiment. These include a stereo audio stimulator, a button box port for precise reaction-time measurement, triggers for electrophysiology equipment, and a complete analog I/O subsystem.

Because we implemented the video controller and peripheral control on the same circuit board, you can now successfully synchronize all of your subject I/O to video refresh with microsecond precision.

The DATAPixx video subsystem converts a dual-link DVI digital video input from the host computer (or laptop) into VGA analog video outputs. The VGA outputs feature full 16-bit video DACs for ultimate precision in very low contrast stimuli. A second VGA output head can show the tester a mirror of the primary display; or alternatively, the left/right halves of a wide DVI input image can be split onto the two VGA displays, ensuring perfect frame synchronization between the left/right displays. To further support stereo applications, the DATAPixx also includes a standard VESA mini-DIN-3 connector for interfacing with stereo glasses.

Available with LabMaestro Simulator

VIDEO SPECIFICATIONS

  • Dual-link DVI input from laptop or PC
  • DVI input frequency: 25 MHz to 330 MHz
  • Dual-synchronized VGA outputs with 16-bit video DACs
  • VGA maximum dot rate: 200 MHz (per VGA channel)
  • Maximum vertical refresh rate: 200 Hz

 

I/O INTERFACE SPECIFICATIONS

  • Button box interface
  • 24 TTL trigger inputs and outputs
  • Stereo audio input and output
  • Analog inputs and outputs
  • Interface for 3D glasses

 

All digital, analog, and audio inputs and outputs feature microsecond synchronization to video refresh

  • DVI input: dual link on DVI-D connector
  • DVI input frequency: 25 MHz to 330 MHz
  • VGA output channels: 2 ch on DB-15 connectors
  • VGA video DAC resolution: 16 bits per RGB gun
  • VGA maximum dot rate: 200 MHz (per VGA channel)
  • Maximum vertical refresh rate: 200 Hz

  • USB 2.0 with 480 Mbit/s theorical maximum bandwidth On-board memory: 128 MBytes for buffering I/O data
  • Operating temperature: 0°C to 70°C
  • Enclosure: steel, with 19’’ rack-mount hardware available
  • Dimensions:
    • 11.70” (W) x 5.58” (D) x 2.10” (H)
    • 29.72 (W) x 14.17 (D) x 5.33 (H) cm
  • Power requirements: 5 VDC @ 3 A, 15 W max (international AC adaptor included)

  • Number of digital inputs: 24 on DB-25 connector
  • Input termination: >20 kΩ pullup to 3.3 V
  • Input tolerance: 5 V

  • Number of digital outputs: 24 on db-25 connector
  • Output drive stage: 5 V through 25 kΩ series resistor
  • Maximum output current:
    • Source: 15 mA
    • Sink: 12 mA

  • Number of channels: 16 (or 8 differential), on DB-25 Converter resolution: 16 bits
  • Maximum sampling rate: 200 kSPS per channel
  • Frequency programming modes:
    • samples per second, or per video frame
    • nanoseconds per sample
  • Simultaneous sampling across all channels
  • Input range: ±10 V
  • Input impedance: 1.6*108 Ω // 3 pF
  • Absolute maximum input tolerance: ±12 V

*These functionalities are available only with DATAPixx Full version (VPX-DPX-1001C)

  • Number of channels: 4 on DB-25 connector
  • Converter resolution: 16 bits
  • Maximum sampling rate: 1 MSPS per channel
  • Frequency programming modes:
    • samples per second, or per video frame
    • nanoseconds per sample
  • Simultaneous output updates
  • Output range: ±10 V on 2 ch, ±5 V on 2 ch
  • Drive capability: ±25 mA

*These functionalities are available only with DATAPixx Full version (VPX-DPX-1001C)

  • Audio line in, microphone in, speaker out, on 3.5 mm jacks
  • Stereo microphone input amplifier resistance: 20 kΩ
  • Microphone sampling rate: 96 kHz
  • Programmable microphone bias voltage range: 2.0 V to 3.1 V
  • Stereo DAC sampling rate: 96 kHz
  • Maximum output power into 8 Ω load: 500 mW

*These functionalities are available only with DATAPixx Full version (VPX-DPX-1001C)

Software support includes a low-level ANSI C API, MATLAB/Octave and Python libraries for use under Microsoft Windows, Ubuntu Linux, and macOS

User manual Download