Color Measurement – SpectraWiz Quick Start

  • Open the SpectraWiz program .
  • Click on the Scope icon (highlighted above). This will show you the number of counts (photons) the detector receives. You should see a spectrum of counts versus wavelength.
  • Set the integration time so that your spectrum, in the SCOPE mode, is not saturated but as close to 65,000 counts as possible. Click on the integration time icon (and type in a value between 1 and 1000 ms) or use sliding scale . In the first picture below, the spectrum is correctly optimized to be right below the saturation limit (65,536 counts). If a portion of the spectrum is off the screen reduce the integration time.
  • With the light source off, and no sample under the probe, wait several collection cycles and hit the dark light bulb icon in the toolbar at the top of the screen. You will see your baseline drop to zero.
  • Place the RS50 White Reflectance Standard under the probe and turn on light source; Take the light reference by clicking on the yellow light bulb icon in the toolbar at the top of the screen.
  • Enter into Transmission Mode and place sample under probe.
  • Begin collecting data. Click CIE Color Measurement icon or from the Applications Menu to see colorimetric values. Pressing ‘Save Sample’ will open a sample ID window and opening the ‘Data Log’ will provide the L*, a*, b*, and x, y coordinates in a text file in the SpectraWiz folder.