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: 23.498496
dt[ms]=    0.000 
dt[ms]=    1.238 
dt[ms]=    2.334 
dt[ms]=    1.041 
dt[ms]=    2.320 
dt[ms]=    1.039 
dt[ms]=    2.332 
dt[ms]=    0.919 
dt[ms]=    2.315 
dt[ms]=    1.060 
dt[ms]=    2.354 
dt[ms]=    1.029 
dt[ms]=    2.315 
dt[ms]=    1.057 
dt[ms]=    2.325 
dt[ms]=    0.922 
dt[ms]=    2.321 
dt[ms]=    1.052 
dt[ms]=    2.376 
dt[ms]=    0.991 
dt[ms]=    2.240 
dt[ms]=    1.046 
dt[ms]=    2.304 
dt[ms]=    1.046 
dt[ms]=    2.321 
dt[ms]=    1.064 
dt[ms]=    2.309 
dt[ms]=    1.070 
dt[ms]=    2.320 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  120883.85370148865
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.