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: 28.560672
dt[ms]=    0.000 
dt[ms]=    2.345 
dt[ms]=    0.940 
dt[ms]=    2.303 
dt[ms]=    1.084 
dt[ms]=    2.330 
dt[ms]=    1.041 
dt[ms]=    2.288 
dt[ms]=    0.974 
dt[ms]=    2.287 
dt[ms]=    1.072 
dt[ms]=    2.321 
dt[ms]=    1.058 
dt[ms]=    2.301 
dt[ms]=    0.945 
dt[ms]=    2.300 
dt[ms]=    1.069 
dt[ms]=    2.412 
dt[ms]=    0.969 
dt[ms]=    2.297 
dt[ms]=    1.073 
dt[ms]=    2.301 
dt[ms]=    0.950 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  98.45117252229456
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.