Thermo Scientific Accela PDA, Руководство по оборудованию, Страница: 94 / 128

5
ChromQuest Diagnostics for the PDA Detector
Calibrating the PDA Detector from the ChromQuest Data System
74 Accela PDA Detector Hardware Manual Thermo Scientific
The PDA detector briefly turns the lamps off as it performs the dark current calibration
routine. After it completes the dark current calibration, the PDA detector turns the lamps
back on.
Y To perform a dark current calibration of the diode array
1. Prepare the PDA detector for calibration (see “Preparing the PDA Detector for
Calibration” on page 73 ).
2. Open the Diagnostics dialog box for the Accela PDA Detector (see “Accessing the Direct
Controls for the Accela PDA Detector” on page 62 ).
3. Click the Calibration tab.
The Calibration page appears.
4. In the Array area, click Execute .
A message box appears (see Figure 61 ).
Figure 61. Calibration preconditions dialog box
5. Make sure that the lamps are warmed up, that the pump is running at 1 mL/min, and
that the filter wheel is in position 1 (see Figure 20 on page 25 ), and then click OK .
The status of the calibration procedure appears by the Status readback area on the
Calibration page. During the dark current calibration, the lamps turn off before the data
system collects the intensity scans. After the last calibration event, the lamps turn back on.
6. Click OK to finish the calibration.
The date and time of the calibration appear in the Array area of the Calibration page and
are stored in the PDA detector’s memory.
Note The dark current calibration program does not run when data collection is enabled
on the Display page.