Xcalibur II manual

OPERATION

6.5.3.5.3 Scan Width

The scan width is linked to the mosaicity of the sample. The default values are selected for a crystal of average quality. This number may need to be increased for a poor quality crystal. Click on Next.

NOTE

This number is not the frame width used during the run list editing.

Figure 6.5.15 Screenshot of CrysAlis data reduction screen (scan width)

6.5.3.5.4 Background Evaluation

The CrysAlisRED program uses a global background evaluation. For an accurate evaluation of integrated intensities a good background determination is essential. The evaluation range (Re) and the repeat frequency (Fr) values can be edited. Since the background evaluation process is very memory consuming you may reduce the load by binning several pixels together. This is less accurate but 4x4 binning is usually sufficient. (Select 4). Click on Next.

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