Linux native USB library loaded.
spectrometer type: HR2000+ s/n: HR+C1886 number of channels: 1 firmware: 3.30.0 
Integration time 1.67 [ms], number of spectra 29 Sampling time 50000.0
Number of pixels: 2048
acquiring the readoutnoise patterns
Loop 1 of infinite
Waiting on trigger
Spectra acquired
Background acquired
Spectra acquired
board temperature: 25.31088
dt[ms]=    0.000 
dt[ms]=    0.968 
dt[ms]=    2.340 
dt[ms]=    0.910 
dt[ms]=    2.347 
dt[ms]=    1.056 
dt[ms]=    2.286 
dt[ms]=    1.054 
dt[ms]=    2.324 
dt[ms]=    1.056 
dt[ms]=    2.349 
dt[ms]=    0.893 
dt[ms]=    2.382 
dt[ms]=    0.992 
dt[ms]=    2.361 
dt[ms]=    1.029 
dt[ms]=    2.312 
dt[ms]=    0.928 
dt[ms]=    2.332 
dt[ms]=    1.054 
dt[ms]=    2.308 
dt[ms]=    1.068 
dt[ms]=    2.324 
dt[ms]=    1.048 
dt[ms]=    2.304 
dt[ms]=    0.943 
dt[ms]=    2.323 
dt[ms]=    1.045 
dt[ms]=    2.321 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  107513.80975565457
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.