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: 24.435936
dt[ms]=    0.000 
dt[ms]=    1.305 
dt[ms]=    2.313 
dt[ms]=    0.929 
dt[ms]=    2.307 
dt[ms]=    1.076 
dt[ms]=    2.341 
dt[ms]=    1.049 
dt[ms]=    2.323 
dt[ms]=    1.048 
dt[ms]=    2.319 
dt[ms]=    0.914 
dt[ms]=    2.303 
dt[ms]=    1.078 
dt[ms]=    2.309 
dt[ms]=    1.046 
dt[ms]=    2.299 
dt[ms]=    0.949 
dt[ms]=    2.297 
dt[ms]=    1.073 
dt[ms]=    2.299 
dt[ms]=    1.080 
dt[ms]=    2.299 
dt[ms]=    1.072 
dt[ms]=    2.299 
dt[ms]=    0.957 
dt[ms]=    2.297 
dt[ms]=    1.075 
dt[ms]=    2.296 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  110080.200531517
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.