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: 23.685984
dt[ms]=    0.000 
dt[ms]=    1.160 
dt[ms]=    2.320 
dt[ms]=    1.047 
dt[ms]=    2.343 
dt[ms]=    0.919 
dt[ms]=    2.335 
dt[ms]=    1.042 
dt[ms]=    2.318 
dt[ms]=    1.052 
dt[ms]=    2.336 
dt[ms]=    1.055 
dt[ms]=    2.300 
dt[ms]=    0.921 
dt[ms]=    2.327 
dt[ms]=    1.055 
dt[ms]=    2.302 
dt[ms]=    1.099 
dt[ms]=    2.298 
dt[ms]=    1.044 
dt[ms]=    2.318 
dt[ms]=    0.928 
dt[ms]=    2.350 
dt[ms]=    1.051 
dt[ms]=    2.300 
dt[ms]=    1.045 
dt[ms]=    2.350 
dt[ms]=    0.921 
dt[ms]=    2.318 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  118.16165273975878
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.