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: 23.873472
dt[ms]=    0.000 
dt[ms]=    1.329 
dt[ms]=    2.300 
dt[ms]=    1.058 
dt[ms]=    2.317 
dt[ms]=    1.059 
dt[ms]=    2.302 
dt[ms]=    0.940 
dt[ms]=    2.291 
dt[ms]=    1.081 
dt[ms]=    2.299 
dt[ms]=    1.085 
dt[ms]=    2.296 
dt[ms]=    1.065 
dt[ms]=    2.317 
dt[ms]=    0.949 
dt[ms]=    2.312 
dt[ms]=    1.055 
dt[ms]=    2.299 
dt[ms]=    1.078 
dt[ms]=    2.311 
dt[ms]=    0.939 
dt[ms]=    2.308 
dt[ms]=    1.065 
dt[ms]=    2.291 
dt[ms]=    1.088 
dt[ms]=    2.299 
dt[ms]=    0.957 
dt[ms]=    2.304 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  121254.55648665587
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.