Mobile lab

The MBJ Mobile Lab in the second generation combines a TÜV certified A + A + A solar simulator with a high-resolution electroluminescence test system according to IEC 60904-9. The mobile laboratory for solar modules enables standard-compliant and precise on-site testing at maximum throughput. In one shift up to 300 modules can be checked in detail.

The laboratory optionally includes up to 7 test methods. In addition to the power measurement and the electroluminescence, the basic scope includes connection testing and the test of the bypass diodes. Optional thermography, high voltage measurement, grounding test and UV fluorescence are available.

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General data

  • Efficient loading of modules upright by one person
  • Combined processing and storage of all inspection results
  • Integrated software interface for the operation of all test steps
  • Easy management of module parameters and measurement jobs
  • Module sizes up to 1060x1980 mm (WxH)
  • Mono- and multicrystalline solar modules or thin-film modules
  • Test volume of up to 400 modules per day
  • Grid independent operation with generator
  • Air conditioning (cooling / heating) of the measuring chamber to STC
  • Standard construction variants:
  • System installed in a car trailer
  • Only system containers       
  • Extra charge:
  • System container on car attachments



Basic version

  • LED Solar Simulator / Flasher:
  • TÜV certified LED light source according to IEC 60904-9 Ed.2
  • Class A + spectrum
  • Class A + Long Term Stability (LTI) <+/- 0.25%
  • Class A Homogeneity inaccuracy <+/- 1.5%
  • Homogeneously illuminated area (W x L) 1,000mm x 1,940mm Irradiance 200-1200W / m² (adjustable in 200W / m2 steps)
  • Long pulse,> 200ms at full irradiance
  • Lifetime of LED light source> 1 million flashes
  • Repeatability Pmax (flash to flash) <0.2%
  • Built-in Fraunhofer WPVS reference cell Current / voltage measuring range up to 14A, up to 260V  
  • Elektroluminescene-testing system:
  • Two MBJ NIR-CMOS cameras, 2 megapixels each, regulated cooling
  • Cameras mounted side by side on a linear axis
  • Image resolution ~ 300μm / pixel, equivalent to ~ 20 megapixels for the field of view
  • Shutter speed frame less than 1 second Cycle time for complete image capture less than 20 seconds
  • Current supply of the modules up to 250V and 12A
  • Electrical Tests:
  • Connection test through the complete module
  • Test of the bypass diodes
  • mispolarization


  • Thermography:
  • MBJ handheld camera on Optris basis
  • 160x120 pixel microbolometer
  • Fully integrated with the software, live view on 24 "monitor
  • Automatic energization, adjustable
  • Manual image recording with the drawer pulled out
  • UV Fluorescence:
  • 8 high power UV LEDs mounted on linear axis
  • Homogeneous illumination, image acquisition parallel to EL recording.
  • Adjustable light intensity EL / FL overlay possible
  • Filters for LEDs and cameras
  • HiPot and grounding test:
  • Test voltage adjustable up to 6,000VDC
  • Test current adjustable from 3A to 30A
  • Test time adjustable from 0.1s to 999s
  • Contacting the high voltage via module plug (no plugging)
  • Contacting the earthing via box terminals with carbide tips

Designed for mobile use


The Mobile PV Test Center was developed by a team of specialists and with the know-how of MBJ Solutions, a leading provider of test equipment for module production, especially for on-site testing and now significantly improved in the second generation.

It includes all the measuring and testing methods required for an objective judgement of the solar modules on site. Under-performance but also hidden defects such as micro-cracks or inactive areas as well as hotspots in the module can be detected quickly and reliably.