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: 24.435936
dt[ms]=    0.000 
dt[ms]=    2.363 
dt[ms]=    3.243 
dt[ms]=    3.242 
dt[ms]=    0.930 
dt[ms]=    2.306 
dt[ms]=    1.075 
dt[ms]=    2.302 
dt[ms]=    1.066 
dt[ms]=    2.305 
dt[ms]=    0.956 
dt[ms]=    2.300 
dt[ms]=    1.064 
dt[ms]=    2.303 
dt[ms]=    1.095 
dt[ms]=    2.326 
dt[ms]=    0.933 
dt[ms]=    2.285 
dt[ms]=    1.070 
dt[ms]=    2.297 
dt[ms]=    1.067 
dt[ms]=    2.301 
dt[ms]=    1.083 
dt[ms]=    2.312 
dt[ms]=    0.927 
dt[ms]=    2.306 
dt[ms]=    1.076 
dt[ms]=    2.301 
dt[ms]=    1.069 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  118.28695075519528
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.