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 23 Sampling time 40000.0
Number of pixels: 2048
acquiring the readoutnoise patterns
Loop 1 of infinite
Waiting on trigger
Spectra acquired
Background acquired
Spectra acquired
board temperature: 32.247936
dt[ms]=    0.000 
dt[ms]=    3.330 
dt[ms]=    0.935 
dt[ms]=    2.321 
dt[ms]=    0.934 
dt[ms]=    2.300 
dt[ms]=    1.064 
dt[ms]=    2.313 
dt[ms]=    1.073 
dt[ms]=    2.276 
dt[ms]=    0.963 
dt[ms]=    2.321 
dt[ms]=    1.045 
dt[ms]=    2.316 
dt[ms]=    1.053 
dt[ms]=    2.331 
dt[ms]=    1.051 
dt[ms]=    2.314 
dt[ms]=    0.950 
dt[ms]=    2.311 
dt[ms]=    1.070 
dt[ms]=    2.282 
dt[ms]=    1.082 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  82.57185778851981
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.