Thermo Scientific Surveyor PDA Plus, Руководство по оборудованию

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5
ChromQuest Diagnostics for the PDA Detector
Calibrating the Detector with ChromQuest
Thermo Scientific Surveyor PDA Plus Detector Hardware Manual 65
Performing a Wavelength Calibration
The alignment of the spectrum on the diode array is dependent upon the physical alignment
of various components of the optical bench. The alignment can become offset if the detector
is sharply jolted, for example, in shipping. 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 for any misalignment.

To perform a wavelength calibration with ChromQuest
1. On the Instrument Status page for the PDA detector, click Diagnostics to open the
PDA Plus Diagnostics dialog box.
2. Click the Calibration tab to display the Calibration page (see Figure 58 ).
Figure 58. Calibration page of the PDA Plus Diagnostics dialog box
3. Open a Wavelength Calibration file as follows:
a. In the Wavelength File area, click Open to display the Select Wavelength Calibration
dialog box.
b. In the Select Wavelength Calibration dialog box shown in Figure 59 , select an
appropriate wavelength calibration file from the list.
An appropriate wavelength file should include the range of wavelengths that you use
under normal operation conditions.