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: 31.560480000000002
dt[ms]=    0.000 
dt[ms]=    1.007 
dt[ms]=    2.320 
dt[ms]=    1.054 
dt[ms]=    2.290 
dt[ms]=    1.096 
dt[ms]=    2.323 
dt[ms]=    1.054 
dt[ms]=    2.295 
dt[ms]=    0.938 
dt[ms]=    2.287 
dt[ms]=    1.098 
dt[ms]=    2.299 
dt[ms]=    1.063 
dt[ms]=    2.308 
dt[ms]=    0.953 
dt[ms]=    2.314 
dt[ms]=    1.051 
dt[ms]=    2.314 
dt[ms]=    1.067 
dt[ms]=    2.311 
dt[ms]=    1.057 
dt[ms]=    2.317 
dt[ms]=    0.941 
dt[ms]=    2.342 
dt[ms]=    1.030 
dt[ms]=    2.301 
dt[ms]=    1.081 
dt[ms]=    2.308 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  93.22821413348846
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.