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: 26.810784
dt[ms]=    0.000 
dt[ms]=    1.234 
dt[ms]=    2.342 
dt[ms]=    1.024 
dt[ms]=    2.318 
dt[ms]=    1.083 
dt[ms]=    2.343 
dt[ms]=    1.013 
dt[ms]=    2.340 
dt[ms]=    0.895 
dt[ms]=    2.360 
dt[ms]=    1.015 
dt[ms]=    2.317 
dt[ms]=    1.084 
dt[ms]=    2.312 
dt[ms]=    0.937 
dt[ms]=    2.348 
dt[ms]=    1.031 
dt[ms]=    2.315 
dt[ms]=    1.044 
dt[ms]=    2.340 
dt[ms]=    0.900 
dt[ms]=    2.316 
dt[ms]=    1.072 
dt[ms]=    2.326 
dt[ms]=    1.070 
dt[ms]=    2.332 
dt[ms]=    1.045 
dt[ms]=    2.299 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  111.26314278185045
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.