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: 24.123456
dt[ms]=    0.000 
dt[ms]=    1.129 
dt[ms]=    2.356 
dt[ms]=    1.038 
dt[ms]=    2.348 
dt[ms]=    0.874 
dt[ms]=    2.365 
dt[ms]=    1.008 
dt[ms]=    2.366 
dt[ms]=    1.008 
dt[ms]=    2.341 
dt[ms]=    1.060 
dt[ms]=    2.348 
dt[ms]=    0.896 
dt[ms]=    2.300 
dt[ms]=    1.059 
dt[ms]=    2.335 
dt[ms]=    1.042 
dt[ms]=    2.347 
dt[ms]=    1.022 
dt[ms]=    2.360 
dt[ms]=    0.887 
dt[ms]=    2.347 
dt[ms]=    1.063 
dt[ms]=    2.291 
dt[ms]=    1.057 
dt[ms]=    2.348 
dt[ms]=    0.917 
dt[ms]=    2.286 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  113414.42610041973
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.