6500 using full range, visible and nir

towerman's picture

I am working on a foss 6500. It will not pass the performance test because it has a noise spike at about 800nm. This is some kind of mechanical noise. When these instruments have problems with the the torquer or encoder motors causing a mechanical noise spike it showes up at about 1400 to 1500nm. This unit has no spike in that area. I have been told this could be a alignment problem with the order sorter. Again if that is the case then I would have problems in the 1800 to 2500 nm area and I do not. My work on these instruments is in the NIR region and I have little experence in the visible area. Any insight on this problem would be a great help. Thank you all !

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