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 23 Sampling time 40000.0
Number of pixels: 2048
acquiring the readoutnoise patterns
Loop 1 of infinite
Waiting on trigger
Spectra acquired
Background acquired
Spectra acquired
board temperature: 28.623168
dt[ms]=    0.000 
dt[ms]=    2.383 
dt[ms]=    3.383 
dt[ms]=    3.348 
dt[ms]=    3.367 
dt[ms]=    3.383 
dt[ms]=    3.375 
dt[ms]=    3.384 
dt[ms]=    2.377 
dt[ms]=    2.342 
dt[ms]=    0.933 
dt[ms]=    2.322 
dt[ms]=    1.056 
dt[ms]=    2.316 
dt[ms]=    1.052 
dt[ms]=    2.318 
dt[ms]=    0.957 
dt[ms]=    2.300 
dt[ms]=    1.055 
dt[ms]=    2.291 
dt[ms]=    1.086 
dt[ms]=    2.302 
dt[ms]=    1.069 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  98.01317069573865
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.