mar345 Program Manual
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Note: Timing is a crucial issue when operating the scanner. If the computer is very busy
doing other computations, the internal clock of the program will work slower. A good check for
excessive computer activity is if the X−windows server is not able to repaint the user interace
at a reasonable speed.
3.4 Scanner Command Area
The buttons in the command area can be used to send commands directly to the scanner or
to pop up further windows, i.e. the mar345−Scan and mar345−Change Parameters
windows. The functions of the individual buttons are:
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Button
Description
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Collect
Changes layout of the button choices, i.e. the Collect Menu buttons are
displayed.
Scan
Pops up the mar345−Scan window.
Erase
Immediately starts to erase the imaging plate. Erasing is identical to doing
a scan, but no data are taken.
Initialize
The scanner will move to its distance reference position (usually at the far end
of the translation stage). This distance initialization may have to be done if the
scanner looses the information about the distance for some reasons. The re−
ference positions are taken from the configuration file. The detector move−
ment has to be confirmed.
The configuration file will be reread when pressing this button.
Open Shutter Opens (or closes) the local X−ray beam shutter.
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And in the Collect Menu there are:
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Single Set
Pops up the mar345−Change Parameters window for programming
a single data set.
Multiple Sets Pops up the mar345−Change Parameters window for programming
up to 64 data sets.
Index Crystal Pops up the mar345−Change Parameters window for programming
a small number of images to be used for indexing a crystal.
MAD Data
Pops up the mar345−Change Parameters window for programming
a data collection typical for anomalous and/or MAD data.
Cancel
Returns to the original layout.
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