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: 27.685728
dt[ms]=    0.000 
dt[ms]=    1.361 
dt[ms]=    2.314 
dt[ms]=    0.936 
dt[ms]=    2.315 
dt[ms]=    1.064 
dt[ms]=    2.323 
dt[ms]=    1.049 
dt[ms]=    2.336 
dt[ms]=    0.918 
dt[ms]=    2.315 
dt[ms]=    1.052 
dt[ms]=    2.318 
dt[ms]=    1.056 
dt[ms]=    2.324 
dt[ms]=    1.063 
dt[ms]=    2.303 
dt[ms]=    0.924 
dt[ms]=    2.340 
dt[ms]=    1.057 
dt[ms]=    2.299 
dt[ms]=    1.055 
dt[ms]=    2.327 
dt[ms]=    0.939 
dt[ms]=    2.309 
dt[ms]=    1.061 
dt[ms]=    2.323 
dt[ms]=    1.052 
dt[ms]=    2.324 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  110.80699412407277
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.