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: 26.998272
dt[ms]=    0.000 
dt[ms]=    2.391 
dt[ms]=    3.247 
dt[ms]=    3.247 
dt[ms]=    0.931 
dt[ms]=    2.311 
dt[ms]=    1.068 
dt[ms]=    2.295 
dt[ms]=    0.950 
dt[ms]=    2.310 
dt[ms]=    1.071 
dt[ms]=    2.295 
dt[ms]=    1.074 
dt[ms]=    2.309 
dt[ms]=    0.948 
dt[ms]=    2.293 
dt[ms]=    1.074 
dt[ms]=    2.314 
dt[ms]=    1.063 
dt[ms]=    2.302 
dt[ms]=    1.085 
dt[ms]=    2.298 
dt[ms]=    0.938 
dt[ms]=    2.303 
dt[ms]=    1.085 
dt[ms]=    2.291 
dt[ms]=    1.072 
dt[ms]=    2.300 
dt[ms]=    1.078 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  112.69496572924477
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.