Thermo Scientific Accela PDA, Hardware Manual

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5
ChromQuest Diagnostics for the PDA Detector
Calibrating the PDA Detector from the ChromQuest Data System
Thermo Scientific Accela PDA Detector Hardware Manual 75
Performing a Wavelength Calibration from the ChromQuest Data System
The alignment of the spectrum on the diode array depends upon the physical alignment of
various components of the optical bench. The alignment can become offset if the detector is
sharply jolted, in shipping, for example. Such bumps and jars can slightly change the
wavelength of light reaching the photodiode array. The automated wavelength calibration
determines the wavelength accuracy of the detector and uses the detector’s wavelength
algorithm to correct any misalignment.
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To perform a wavelength calibration with ChromQuest
1. Open the Accela PDA Diagnostics dialog box (see “Accessing the Direct Controls for the
Accela PDA Detector” on page 62 ).
2. Click the Calibration tab.
The Calibration page appears (see Figure 62 ).
Figure 62. Calibration page of the Accela Diagnostics dialog box