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Open the XRD Commander program using the icon 
on the desktop or toolbar. Figure 11 is the initial window. Be sure you are in the 'Adjust' tab (bottom left, Figure 11).
Figure 11. XRD Commander main window. (A) Initialize Sample Changer buttonDriver Request checkmarks, (B) Initialize Driver Request checkmarksSample Changer button, (C) Tabs
The checkmarks (Figure 11B11A) indicate the drives that will be initialized. Check all boxes with values before initializing: Theta, 2Theta, Div. Slit, Phi. Click on Init SC to initialize the Sample Changer (Figure 11A11B). The program then 'locates' all the mechanical drives in the D4. It typically remembers the Theta, 2Theta, and Phi drives but the Divergence Slit sometimes does not initialize. That should not be an issue for scanning samples as our Div. Slit is not mechanical, however if the software won't scan a sample because one or more of the drives did not initialize (successfully initialized drives will turn blue) you can try restarting the program and reinitializing, and/or turning off the D4 and the XRD Commander software and restarting the instrument then the XRD Commander software and repeating the steps above. If that does not work, close XRD Commander and open D4 Tools 
from the desktop. Note D4 Tools and XRD Commander cannot be open at the same time.
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