Diode-Array Spectrometer Howto Guide
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How to change the number of scans/exposure
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Change the number, hit enter. Scan the leakage again.
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How to change between IR/visible light
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Hit the black button to the right of the microscope and wait until new
grating moved into position. Also change
the "Range". If you change the exposure time, be sure it's for the Visible
or IR (top vs. bottom). screenshot
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How to get the aperture lined up
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Close them most the way and get the edges into
focus. The apertures can be pulled any direction by unlatching the
plastic bar, moving, then latching it back down. Likewise the apertures
can be rotated in any direction. Get as much of the sample in as possible,
closing the aperture if necessary. Also make sure you're just using the
smooth, flat, polished surfaces.
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How to save backgrounds/raw samples and put them together later
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This is important when changing temperature because can't adjust sample
between different
temperatures. Run all samples or backgrounds first and go to "Tools" and
save. Then run the other and save all. A good method is run all the
backgrounds first and save. On the next run with
the sample, load the background before scanning sample. Then just save as
fixed abs between each. *Remember to have the same number of
scans/exposure time!*
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How to merge graphs
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Go to the Graphics folder on the desktop. Run
Merge.exe. Pick the first graph you want to merge with the icon on file 1.
Select file 2 then select your next file. Anytime you manually change the
axis or want to stop changing with auto, hit fix (X or Y) axis. Then
clear your graph and redraw it. It helps to zoom where you will be joining
the graphs before cutting them. Remember the very ends of IR and Visible
graphs have more error than further in. As a good general rule: pick as
much towers the middle of their overlap as possible, avoiding and local
bumps. To cut, select a graph and enter a value
you want to delete all values above a certain value. Enter the value and
hit the button. Never the same value for the delete lower than but select
the other file. Delete. Now you should have two graphs which stop at the
same point. Pick one to raise or lower. The vertical bars to the right
are coarse then fine scales to raise and lower. Once you think you have
the graph in place hit "Execute move" twice. then redraw the graph.
Readjust to your need if necessary. To merge, first give the
merged data a new name in that spot in the middle of the page. The hit
merge data. This can be redrawn and saved.
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