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1.  Select the tab labeled DARK-1 (Figure 5).
   1. The default exposure values are automatically displayed and are the recommend values, but you may set other values. Be aware that the dark saturation (image intensity saturation) must be 7% or lower and you need to capture at least 100 images for stacking. 
   2. Default Recommended values are Image stack: 10020, kV: 8060, mA: 0.73, Integration Time: 1 ms
2. Click the Take DARK Image button.
   1. The X-Ray Image Acquisition window will open (Figure 7).  During acquisition, the image window appears black but you will see values in the histogram and in the image line profile.

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1. Select the tab labeled WHITE-2 (Figure 8). 
   1. The default exposure values are automatically displayed and are the recommend values, but you may set other values. Just be aware that the maximum intensity cannot exceed 99%. 
   2. Default Recommended values are : Image stack : = 20,   kV : 112=80, mA: =1.0, Integration Time : 12 ms= 30
2. Click the Take WHITE Image button.
   1. The X-Ray Image Acquisition window will open (Figure 9).
   2. During acquisition, the image window appears white shading to darker grey on the left and right edges.

Once acquisition is completed, you will be return to the FPD Calibration Utility window.

3. Check the maximum saturation value and confirm that it is in the target range of 94-98%. If not, adjust the exposure values and repeat (Figure 8).

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