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: 23.498496
dt[ms]=    0.000 
dt[ms]=    2.360 
dt[ms]=    0.932 
dt[ms]=    2.308 
dt[ms]=    0.938 
dt[ms]=    2.318 
dt[ms]=    1.061 
dt[ms]=    2.298 
dt[ms]=    1.070 
dt[ms]=    2.308 
dt[ms]=    0.943 
dt[ms]=    2.286 
dt[ms]=    1.107 
dt[ms]=    2.308 
dt[ms]=    1.053 
dt[ms]=    2.301 
dt[ms]=    0.956 
dt[ms]=    2.300 
dt[ms]=    1.062 
dt[ms]=    2.303 
dt[ms]=    1.080 
dt[ms]=    2.304 
dt[ms]=    1.064 
dt[ms]=    2.304 
dt[ms]=    0.956 
dt[ms]=    2.326 
dt[ms]=    1.047 
dt[ms]=    2.329 
dt[ms]=    1.050 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  114400.33879681965
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.