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 23 Sampling time 40000.0
Number of pixels: 2048
acquiring the readoutnoise patterns
Loop 1 of infinite
Waiting on trigger
Spectra acquired
Background acquired
Spectra acquired
board temperature: 26.998272
dt[ms]=    0.000 
dt[ms]=    2.346 
dt[ms]=    0.952 
dt[ms]=    2.326 
dt[ms]=    0.918 
dt[ms]=    2.315 
dt[ms]=    1.064 
dt[ms]=    2.314 
dt[ms]=    1.061 
dt[ms]=    2.313 
dt[ms]=    0.932 
dt[ms]=    2.305 
dt[ms]=    1.060 
dt[ms]=    2.325 
dt[ms]=    1.049 
dt[ms]=    2.385 
dt[ms]=    1.022 
dt[ms]=    2.341 
dt[ms]=    1.031 
dt[ms]=    2.285 
dt[ms]=    0.938 
dt[ms]=    2.325 
dt[ms]=    1.097 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  99.28694325532308
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.