Determining The Diode Of Maximum Intensity For The Visible Range; Setting The Discrete Channel Displays - Thermo Scientific Surveyor PDA Plus Hardware Manual

5
ChromQuest Diagnostics for the PDA Detector
Adjusting the Light Output from the Lamps

Determining the Diode of Maximum Intensity for the Visible Range

Setting the Discrete Channel Displays

82 Surveyor PDA Plus Detector Hardware Manual
5. In the Axis Properties dialog box, do the following:
a. Select X-axis from the list
b. Select the Use This Range option.
c. In the Min box, type 30.
d. In the Max box, type 50.
e. Click OK to close the dialog box and to update the scaling of the Spectrum view.
6. From the spectrum displayed, determine and record the pixel of maximum intensity
within the 30 to 50 diode range. This is the diode of maximum output for the deuterium
lamp.
 To determine the diode of maximum intensity for the visible range
1. Open the Axis Setup dialog box.
2. Do the following:
a. In the Min box, type 400.
b. In the Max box, type 500.
c. Click OK to close the dialog box and to update the scaling of the Spectrum view.
3. From the spectrum displayed, determine and record the pixel of maximum intensity
within the 400 to 500 diode range. This is the diode of maximum output for the tungsten
lamp.
 To set the discrete channel displays
1. Turn off the data stream by clicking on Off for Status and Stop for Data.
2. Set the discrete channel displays as follows:
a. Return to the Control page.
b. In the Channel A box, type the value for the diode of maximum intensity for the
deuterium lamp.
c. In the Channel C box, type the value for the diode of maximum intensity for the
tungsten lamp.
d. Click Load to Detector.
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