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]=    0.999 
dt[ms]=    2.304 
dt[ms]=    1.062 
dt[ms]=    2.316 
dt[ms]=    1.070 
dt[ms]=    2.290 
dt[ms]=    0.953 
dt[ms]=    2.310 
dt[ms]=    1.064 
dt[ms]=    2.298 
dt[ms]=    1.072 
dt[ms]=    2.312 
dt[ms]=    1.075 
dt[ms]=    2.293 
dt[ms]=    0.945 
dt[ms]=    2.313 
dt[ms]=    1.069 
dt[ms]=    2.295 
dt[ms]=    1.080 
dt[ms]=    2.305 
dt[ms]=    0.941 
dt[ms]=    2.300 
dt[ms]=    1.058 
dt[ms]=    2.349 
dt[ms]=    1.054 
dt[ms]=    2.314 
dt[ms]=    0.924 
dt[ms]=    2.311 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  117.40460602910255
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.