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D4 Tools 
is a "troubleshooting' software for the D4. T Two other softwares are needed to analyze the diffractograms obtained with the D4.:
- DIFFRAC.SUITE.EVA, version 3.0 software for evaluation
(a more recent version, version 5.1, is also available
) - DIFFRAC.TOPAS version 4.2.0.1 software
for diffractogram analysis
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- Unless the sample material is very small , select the appropriate sample holder (see Sample Slurry/Smear Slide Mounting for Small Sample Amounts), select the appropriate sample holder (Figure 8A).
- Label the sample holder with a unique identifier to keep the samples organized (e.g., text ID or 14H2 77-78)
- Place enough powder from the labeled sample bottle to fill an empty sample holder (Figure 8B). Gently press the powder flush with the sample holder using a glass slide (Figure 8C). Roll the glass slide over the powder to fill any gaps in material and smooth the surface of the powder (Figure 8D). The surface of the powder must be smooth. Remove excess powder from the sample holder edges with a brush or a Kimwipe (Figure 8E) and carefully place the holder in the D4 sample magazine .
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Before beginning measurements, confirm the scan parameters (singles, step and time) with the Science Party. Scientists can use previous Expeditions for examples of ideal scan parameters. Generally the D4 is used to scan from 5 to 70 º2θ. If you need to make a parameter file, please see Making a Parameter File under Maintenance and Troubleshooting. There are several parameter files from previous expeditions saved in the C:/DIFFDAT \DIFFDAT1 folder. Generally a previous expedition file is satisfactory for most expeditions. There are scan variations for Bulk samples versus Clay separations. Those parameter files are labeled accordingly in the DIFFDAT C:\DIFFDAT1 folder. Generally clays are scanned to include much lower angles (<5 º2θ).
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To initialize the drive(s) that did not initialize with the XRD Commander software click the '+' of 'Positioning Drives' to expand the menu, then click the drive that did not initialize (Figure 14A). Click the 'Adjust' button
(Figure 14B). Please note that when you initialize the drives you can hear the drives moving inside the D4. If you hear a clank or bang and the instrument stops working, you will have to get a trained D4 tech. There is a in-depth sample changer procedure to correct for misalignment in the Bruker Manual (in the cupboard in the X-Ray lab) but it should only be preformed by trained techs. Alternatively, you can contact Bruker company and they can advise or remote into the D4 to fix any errors. Note that some errors can be fixed by clicking the 'First Aid' icon 
(Figure 14C). The program can identify and fix some errors. Try that icon before contacting Bruker company.
Figure 12. Opening D4 Tools.
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