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Pulse Analysis Spectroradiometer System (PASS) Software

National Renewable Energy Laboratory

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Technology Marketing SummaryFlashing artificial light sources are used extensively in photovoltaic module performance testing and plant production lines. There are several means of attempting to measure the spectral distribution of a flash of light; however, many of these approaches generally capture the entire pulse energy. We report here on the design and performance of a system to capture the waveform of flash at individual wavelengths of light. Any period within the flash duration can be selected, over which to integrate the flux intensity at each wavelength. The resulting spectral distribution is compared with the reference spectrum, resulting in a solar simulator classification.DescriptionPASS software is used to control solar simulator lamps designed for solar cell performance testing. By measuring the spectral content of pulsed light sources, the software can be used to understand how photovoltaic devices respond to wavelength ranges within the solar spectrum (as well as electronic or altered light sources). The system captures the waveform of flash at individual wavelengths of light. Any period within the flash duration can be selected, over which to integrate the flux intensity at each wavelength. The resulting spectral distribution is compared with the reference spectrum, resulting in a solar simulator classification. National Instruments Lab Windows is required to use PASS.Benefits
  • Speed and accuracy of operation
Applications and Industries
  • Solar Cell Manufacturing
  • PV Performance Testing Equipment
More InformationTechnology is Copyrighted
Technology Status
Development StageAvailabilityPublishedLast Updated
Development - Tested and validated.Available01/21/201002/02/2010

Contact NREL About This Technology

To: Anne Miller <anne.miller@nrel.gov>