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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 Driver Request checkmarks, (B) Initialize Sample Changer button, (C) TabsSuccessful driver initialization
The checkmarks (Figure 11A) 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 11B). 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, Figure 11C) 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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In the XRD Commander, click on the 'Jobs' tab next to the 'Adjust' tab (see Figure 11C11) . On the 'Jobs' screen, click on the "Create Jobs" icon 
in the toolbar (Figure 15A).
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When all fields have been filled in, click on the "Start" button on the bottom left corner of the screen (Figure 15H). The program will hesitate for a moment and then load the first sample into the measurement position and a second sample into the sample changer. The program will automatically run the samples sequentially. The measurement is finished when it is displayed 'Finished' in the "Status" column of the 'Jobs' tab. If there is an error while scanning the program will stop and notify the user of the error. You can try restarting the software and/or the D4. A sample handler crash may require an experienced D4 XRD tech or you may need to contact Bruker. With the D4 off you can manually move the Z-drive and the sample swing loader, just be aware that the moveable drives are set up to avoid each other during the sample loading sequence, if you move a drive it may cause a crash on start up.
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