Spectrum Integration Time - Advanced Sensors OIW-EX 1000 Handbook

OIW-EX 1000 - Spectrometer Handbook
Code: OIW-HBO-0005 Version: EX-002
Date: 18 March 2010

2.6.3 Spectrum Integration Time

Integration Time specifies the length of the spectral acquisition in milliseconds for the
spectrometer. The integration time of the spectrometer is analogous to the shutter speed of a
camera. The higher the value specified for the integration time, the longer the detector "looks"
at the incoming laser light.
The three integration times relate to the different integration time available to avoid clip the
signal.
If IT1was set to 600ms, IT2 was set to 300ms and IT3 set to 200ms.
The OIW EX 1000 software would take a Spectra using IT1 and check for Spectral clipping.
If Spectral clipping occurred with IT1 then the OIW EX 1000 software would take a Spectra
using IT2 and check for Spectral clipping.
If Spectral clipping occurred with IT2 the OIW EX 1000 software would take a Spectra using
IT3.
Figure 15.
If IT1, IT2 and IT3 are set to the same value then the OIW EX 1000 software does not attempt
to resolve Spectral clipping.
www.advancedsensors.co.uk Tel: +44(0)28 9332 8922. FAX +44(0)28 9332 8669
Example of Different Integration Times
Wave length nm
Spectral Clipping and Integration Times
Advanced Sensors Ltd,
IT1 = 600ms
IT2 = 300ms
IT3 = 200ms
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