The accuracy of the power measurement turns directly into profit for producers. This accuracy is given by 3 physical parameters of the IEC 60904-9 international standard:

- The spectral content of light (AM 1.5g)

- The light distribution over the whole surface

- The stability of light intensity during the flash.

This standard also defines the measurement quality of solar simulators by class: A, B and C (A being the best).

Pasan solar simulators have, on each of these parameters, a twice better accuracy result than the highest class from the standard, which is absolutely unique in the market:

An important point is that these performances apply over the entire illuminated area (2 x 2m or 3 x 3m according to the model used). These outstanding measurement performances are the result of nearly 30 years of know-how and constant development of technologies:

Spectral match

- High density plasma
  Xenon flash tubes

- Customised interferential filters

- Optimised optical design

- Advanced uniformity masks

- Tunnel with light baffles

Real-time high speed control loop

 A detailed analysis on Pasan’s Solar Simulator has been presented at the 25th European Photovoltaic Solar Energy Conference and Exhibition (Valencia, 2010) see item. This outstanding accuracy is valued for both crystalline and thin film technologies.

Each single Solar Simulator is delivered with a certificate proving the performance of the measurement.

Other advanced technologies have also been developed regarding the characterization of the performance under different illumination conditions. A set of attenuation filters allow a performance measurement with low irradiance in the Class A spectrum. Furthermore, the spectral response may be measured by the means of pass band filters.