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: 24.560928
dt[ms]=    0.000 
dt[ms]=    1.080 
dt[ms]=    2.320 
dt[ms]=    1.077 
dt[ms]=    2.336 
dt[ms]=    1.016 
dt[ms]=    2.352 
dt[ms]=    1.016 
dt[ms]=    2.353 
dt[ms]=    0.902 
dt[ms]=    2.318 
dt[ms]=    1.079 
dt[ms]=    2.307 
dt[ms]=    1.093 
dt[ms]=    2.287 
dt[ms]=    0.936 
dt[ms]=    2.319 
dt[ms]=    1.066 
dt[ms]=    2.300 
dt[ms]=    1.037 
dt[ms]=    2.347 
dt[ms]=    1.035 
dt[ms]=    2.333 
dt[ms]=    0.949 
dt[ms]=    2.290 
dt[ms]=    1.080 
dt[ms]=    2.307 
dt[ms]=    1.077 
dt[ms]=    2.297 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  115.94762352858261
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.