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: 31.310496
dt[ms]=    0.000 
dt[ms]=    2.322 
dt[ms]=    3.254 
dt[ms]=    3.254 
dt[ms]=    0.927 
dt[ms]=    2.305 
dt[ms]=    1.074 
dt[ms]=    2.299 
dt[ms]=    0.946 
dt[ms]=    2.315 
dt[ms]=    1.065 
dt[ms]=    2.298 
dt[ms]=    1.072 
dt[ms]=    2.307 
dt[ms]=    0.947 
dt[ms]=    2.308 
dt[ms]=    1.064 
dt[ms]=    2.305 
dt[ms]=    1.074 
dt[ms]=    2.298 
dt[ms]=    1.072 
dt[ms]=    2.315 
dt[ms]=    0.940 
dt[ms]=    2.298 
dt[ms]=    1.073 
dt[ms]=    2.305 
dt[ms]=    1.073 
dt[ms]=    2.309 
dt[ms]=    0.938 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  96.73429143852769
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.