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: 28.998144
dt[ms]=    0.000 
dt[ms]=    3.308 
dt[ms]=    0.930 
dt[ms]=    2.314 
dt[ms]=    1.060 
dt[ms]=    2.298 
dt[ms]=    0.948 
dt[ms]=    2.300 
dt[ms]=    1.076 
dt[ms]=    2.317 
dt[ms]=    1.056 
dt[ms]=    2.300 
dt[ms]=    0.952 
dt[ms]=    2.300 
dt[ms]=    1.072 
dt[ms]=    2.313 
dt[ms]=    1.065 
dt[ms]=    2.300 
dt[ms]=    1.072 
dt[ms]=    2.300 
dt[ms]=    0.953 
dt[ms]=    2.316 
dt[ms]=    1.056 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  95.33829882320063
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.