that this intensity cannot be reached after the burn-in time or the long-time degradation of the LEDs. In
this case, you will get a warning message from the iQ-LED control software.
During the first 500-600 working hours, we recommend performing a spectral calibration every 50
operating hours.
After the first 500-600 operating hours, a calibration of every 150 working hours suffices.
Factors that indicate the need for a spectral calibration include unsatisfactory illuminant generation,
the aberration of the intensity values, or a spectral curve that does not fit with the predefined standard
illuminants of the corresponding preset.
If you run into problems when generating illuminants, please check if:
•The spectrometer works correctly
•The spectrometer settings are correct
•All LED channels work correctly
•The dark measurement is correct
•Your measurement environment is correct
•Your ambient temperature is correct
How to perform the spectral calibration is described in the iQ-LED control software manual.
4.4 Low intensity use
When using your system with very low intensity, the spectral measurement values will start to
fluctuate. The lower the intensity, the higher the fluctuation. The generated light is still stable up to a
certain point. The fluctuation of the values is caused by the noise of the spectral measurement of the
internal spectrometer. The light intensity will continue to get lower when the influence of the noise
continues to get higher. When using standard illuminants with an intensity lower than 25 lux, it will no
longer be possible to get a correct value.
5 ADDITIONAL INFORMATION
5.1 Maintenance
Your spectrometer comes fully NIST traceable calibrated. The spectrometer requires a recalibration
once a year, regardless of the operating hours. Please contact our office for a calibration quotation if a
spectrometer calibration is necessary. Use appropriate packaging to prevent the spectrometer from
being damaged during shipping.
A temporary replacement spectrometer can be provided to bridge the time gap while your
spectrometer is recalibrated. Please contact us for conditions and procedures.
For instructions on removing the spectrometer from your CAL3-XL, see chapter 5.1.1. below.
