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]=    1.043 
dt[ms]=    2.328 
dt[ms]=    0.938 
dt[ms]=    2.335 
dt[ms]=    1.028 
dt[ms]=    2.336 
dt[ms]=    1.035 
dt[ms]=    2.363 
dt[ms]=    0.882 
dt[ms]=    2.362 
dt[ms]=    1.012 
dt[ms]=    2.347 
dt[ms]=    1.060 
dt[ms]=    2.304 
dt[ms]=    1.046 
dt[ms]=    2.365 
dt[ms]=    0.888 
dt[ms]=    2.309 
dt[ms]=    1.078 
dt[ms]=    2.308 
dt[ms]=    1.056 
dt[ms]=    2.324 
dt[ms]=    0.923 
dt[ms]=    2.342 
dt[ms]=    1.029 
dt[ms]=    2.350 
dt[ms]=    1.025 
dt[ms]=    2.347 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  111732.28213647995
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.