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: 25.185888000000002
dt[ms]=    0.000 
dt[ms]=    0.981 
dt[ms]=    2.334 
dt[ms]=    0.910 
dt[ms]=    2.333 
dt[ms]=    1.024 
dt[ms]=    2.341 
dt[ms]=    1.032 
dt[ms]=    2.337 
dt[ms]=    1.039 
dt[ms]=    2.329 
dt[ms]=    0.945 
dt[ms]=    2.299 
dt[ms]=    1.053 
dt[ms]=    2.314 
dt[ms]=    1.053 
dt[ms]=    2.351 
dt[ms]=    0.897 
dt[ms]=    2.311 
dt[ms]=    1.069 
dt[ms]=    2.346 
dt[ms]=    1.050 
dt[ms]=    2.320 
dt[ms]=    1.047 
dt[ms]=    2.338 
dt[ms]=    0.908 
dt[ms]=    2.332 
dt[ms]=    1.049 
dt[ms]=    2.348 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  104716.0091554766
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.