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Why do I need a ViSaGe ?
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Getting from that brilliant insight to the crucial experiment can be the hardest part of any research project. The choices for visual stimulus generation can be bewildering, but false starts waste your time and money.

Computer graphics seem the obvious solution, but it's not that simple. Most systems are designed for games: they are difficult to program and unsupported. Their dynamic range is limited, with inadequate contrast and colour control, and timing is unpredictable. You need the ViSaGe advantage ...


The ViSaGe Advantage

 
Technical Specification
  • Graphics engine: x4 PCI Express
  • Graphics configuration: Dedicated stimulus display (the ViSaGe is not a replacement PC graphics card and does not run Windows)
  • Video output: 14 bit video DACs; 14 bit resolution per colour channel; 160MHz pixel clock; 200kHz line scan rate; 200Hz frame rate
  • Display memory: 256MB video memory; configured as 32 bits per pixel; separate pixel and overlay planes
  • Offscreen memory: Dependent on PC RAM; used for storage of precalculated image sequences
Connectivity
  • Digital I/O: Ten TTL-compatible inputs; ten TTL-compatible outputs
  • Analog in: Six inputs, 16 bit, ±5V signal range, 500Hz bandwidth, free running or synchronised to the stimulus display
  • Analog out: Two outputs, 16 bit, ±5V signal range, updates are frame synchronous
  • Response box: Built in infra-red receiver; built in speaker for feedback; compatible with CB6 & CT6.
  • Compatible with FE-1 stereo goggles
Connectors
  • Video output: DVI-I output for connection to analog stimulus display
  • Analog I/O: Six BNC inputs; two BNC outputs
  • Digital I/O: Trigger In BNC, bi-coloured status LED; Trigger Out BNC, bi-coloured status LED; 25 way D connector
  • Computer interface: USB B input
  • Ancillary equipment: Dual 5 pin Tyco Triad type 01 circular connectors
Supplied Software
  • MATLAB: CRS Toolbox for MATLAB (R2006 or later)
  • Windows programming:VSG Software Library v8.1 for 32 bit Windows
  • Demonstration programs: For MATLAB, Delphi, C++Builder, Visual C++, Visual Basic; full source code provided
  • Backwards compatibility: Native VSGv6 programs for the VSG2/2, VSG2/3, VSG2/4 and VSG2/5 can be recompiled and run on the ViSaGe
Packaging
  • Framestore: x4 PCI Express card (modified 3DLabs R500 PCIe card)
  • Control Unit: 280mm x 100mm x 100mm black anodised aluminium tower
  • Supplied cables: 2m DVI-D video cable for connection between framestore and Control unit; 2m DVI-I to VGA video cable for connection to stimulus display; DVI-I to VGA adapter Windows desktop output; 1.5m USB cable
  • Software: Internet download only. Register your VSG serial number at our web support portal
  • Power: Region-specific 7.5V wall mount PSU
Minimum System Requirements
  • Computer: Dell Precision 390 Workstation or similar with single-core Pentium4 processor; contact CRS for details of the latest models
  • Dual displays: SVGA display for Windows desktop (i.e. 800x600 @ 60 Hz), VGA CRT monitor for Stimulus Display (i.e. 640 x 480 @ 60 Hz)
  • Operating system: Microsoft Windows XP Pro

A comparison of the ViSaGe with legacy VSG hardware versions

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