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: 26.748288000000002
dt[ms]=    0.000 
dt[ms]=    3.458 
dt[ms]=    2.366 
dt[ms]=    2.355 
dt[ms]=    1.018 
dt[ms]=    2.346 
dt[ms]=    1.051 
dt[ms]=    2.299 
dt[ms]=    0.949 
dt[ms]=    2.324 
dt[ms]=    1.052 
dt[ms]=    2.347 
dt[ms]=    1.026 
dt[ms]=    2.325 
dt[ms]=    1.028 
dt[ms]=    2.310 
dt[ms]=    0.962 
dt[ms]=    2.330 
dt[ms]=    1.052 
dt[ms]=    2.304 
dt[ms]=    1.077 
dt[ms]=    2.327 
dt[ms]=    1.042 
dt[ms]=    2.327 
dt[ms]=    0.925 
dt[ms]=    2.319 
dt[ms]=    1.043 
dt[ms]=    2.328 
dt[ms]=    1.074 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  112.29914617271747
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.