I S A – A M S O p e r a t i o n
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9.2.2 The Spectra Window
The spectrometer measures raw spectra, from the raw spectra, the system calculates the absorbance spectra.
In an absorbance spectrum the
absorbance factor of the single wavelengths
are represented with a loga-
rithmic scale. The maximum value is 4.51.
� 𝑒
𝑖
=
−𝑙𝑜𝑔
10
�
𝑠𝑝𝑒𝑐𝑡𝑟𝑢𝑚
𝑖
𝑐𝑙𝑒𝑎𝑟
𝑤𝑎𝑡𝑒𝑟
𝑠𝑝𝑒𝑐𝑡𝑟𝑢𝑚
𝑖
�
𝑖=255
𝑖=0
Using the Zeiss coefficients (see pre-previous page) to each even-numbered wavelength of 200 nm to 708 nm
there is assigned a value. Uneven-numbered wavelengths get the value of the preceding even-numbered
wavelength.
Main functions of the spectra window
•
Display of the currently recorded absorbance and raw spectra and the current clearwater spectrum
•
Saving and displaying of fingerprints
•
Performance of clearwater calibrations and intensity calibrations in clearwater
Call up with:
in the Sensor setup window of the spectrometer
Call up with:
in the Sensor setup window of the spectrometer
The spectra window with the display of the absorbance spectra appears. see next page
