Patent ID: 6029115
Filing Date: 2000-02-22
Classification: G01J

Abstract:
A method for analyzing spectral data in a spectrometric instrument including a dispersion element and a detector receptive of dispersed light from the element, the detector having a plurality of detecting subarrays, with each subarray being at a different position on the detector; the method comprising steps of:acquiring first spectral data for a drift standard for selected subarray positions at a first time;comparing the first spectral data to a preassigned zero position for each selected subarray to obtain first offset data;acquiring second spectral data for a drift standard for selected subarray positions at a second time;comparing the second spectral data to the zero position for each selected subarray to obtain second offset data; andutilizing the first offset data to obtain a first offset function defining an offset for any subarray position, using the second offset data to obtain a second offset function defining an offset for any subarray position, and utilizing the difference between the first offset function and the second offset function to obtain a spectral shift for any subarray position at any selected time relative to the first time.