1. The laser might be difficult to see on reflective samples. If this is the case, move
Chi/psi to 22.5 degrees (splitting the angle between the laser and the video) to
cause the laser to reflect back into the camera.
Zoom = 1X Zoom = 7X
!!! Warning: Always leave one finger on “ESC/STOP” button when you are using command mode. Press
“ESC/STOP” button immediately if the moving part is going to hit other part.
ix. Once your sample is in focus and the laser is in the center of the video window (centered
on the crosshairs), zoom the camera in (zoom = 7) to fine tune your sample position.
x. Once the laser spot is centered, the sample is aligned and ready to take data (return
chi/phi to 0 (if applicable)).
xi. Turn the laser off
1. Type “L” in the GADDS program
!!!Warning: You can use the controller to move Θ
1
and Θ
2
to the desired 2θ angle. Make sure the detector will
not get hit by the direct beam (as a rule of thumb, always keep Θ
1
+ Θ
2
> 15°).
xii. Exit Manual control (→ press Esc.).
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