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: 25.873344
dt[ms]=    0.000 
dt[ms]=    3.442 
dt[ms]=    2.317 
dt[ms]=    2.276 
dt[ms]=    1.026 
dt[ms]=    2.323 
dt[ms]=    1.078 
dt[ms]=    2.336 
dt[ms]=    1.038 
dt[ms]=    2.326 
dt[ms]=    0.909 
dt[ms]=    2.333 
dt[ms]=    1.047 
dt[ms]=    2.337 
dt[ms]=    1.020 
dt[ms]=    2.341 
dt[ms]=    0.943 
dt[ms]=    2.296 
dt[ms]=    1.075 
dt[ms]=    2.306 
dt[ms]=    1.066 
dt[ms]=    2.321 
dt[ms]=    1.029 
dt[ms]=    2.337 
dt[ms]=    0.935 
dt[ms]=    2.329 
dt[ms]=    1.048 
dt[ms]=    2.335 
dt[ms]=    1.043 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  114.0970039371691
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.