How to do LM-79 Testing?

IES LM-79-08 standard
Approved Method: Electrical and photometric Measurements of Solid-state Lighting Product
Photometric Results
Colorimetric Parameters:
  • Chromaticity coordinates: (Chroma x / Chroma y / Chroma u(u’) / Chroma v / Chroma v’)
  • Correlated Color Temperature (CCT)
  • Duv Value
  • Color Ratio
  • Peak Wavelength (nm)
  • Half Bandwidth (nm)
  • Dominant Wavelength (nm)
  • Color Purity
  • Color Rendering Index (CRI – Ra)
Colorometric Parameter
Photometric Parameters:
  • Total Luminous Flux (Lumens)
  • Luminous Efficacy (Lumens/Watt)
  • Radiant Power (Watts)
Electrical Results:
  • Input Power (Watts)
  • Input Voltage (Volts )
  • Input Current (Amps)
  • Power Factor
  • Input Frequency (Hz)
Additional Parameters:
  • Stabilization Time (Light and Power) = 60 minutes
  • Test Geometry Configuration = 4π
  • Spectroradiometer = (Lisun LMS-9000A Plus)
  • Ambient Temperature = 25.0°C

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Tested By: Dharminder Chauhan, click Here to follow on linkedin Dharmendra Chauhan Testing Expert
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Thanks & Regards,
Puneet Sharma
M: +91.8196980555
E-mail:-(itcindiaone@gmail.com)
ITC India Pvt. Ltd.

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