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: 25.873344
dt[ms]=    0.000 
dt[ms]=    1.126 
dt[ms]=    2.302 
dt[ms]=    1.077 
dt[ms]=    2.296 
dt[ms]=    1.084 
dt[ms]=    2.333 
dt[ms]=    0.895 
dt[ms]=    2.315 
dt[ms]=    1.077 
dt[ms]=    2.315 
dt[ms]=    1.045 
dt[ms]=    2.323 
dt[ms]=    1.056 
dt[ms]=    2.305 
dt[ms]=    0.941 
dt[ms]=    2.319 
dt[ms]=    1.081 
dt[ms]=    2.317 
dt[ms]=    1.052 
dt[ms]=    2.305 
dt[ms]=    0.931 
dt[ms]=    2.305 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  101.28313935832391
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.