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: 24.373440000000002
dt[ms]=    0.000 
dt[ms]=    1.331 
dt[ms]=    2.314 
dt[ms]=    0.931 
dt[ms]=    2.305 
dt[ms]=    1.072 
dt[ms]=    2.300 
dt[ms]=    1.071 
dt[ms]=    2.328 
dt[ms]=    1.050 
dt[ms]=    2.299 
dt[ms]=    0.948 
dt[ms]=    2.304 
dt[ms]=    1.074 
dt[ms]=    2.311 
dt[ms]=    1.060 
dt[ms]=    2.306 
dt[ms]=    0.948 
dt[ms]=    2.299 
dt[ms]=    1.072 
dt[ms]=    2.317 
dt[ms]=    1.061 
dt[ms]=    2.299 
dt[ms]=    1.073 
dt[ms]=    2.305 
dt[ms]=    0.949 
dt[ms]=    2.312 
dt[ms]=    1.060 
dt[ms]=    2.304 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  117.06564930614438
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.