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: 23.311008
dt[ms]=    0.000 
dt[ms]=    2.372 
dt[ms]=    2.333 
dt[ms]=    1.059 
dt[ms]=    2.314 
dt[ms]=    0.912 
dt[ms]=    2.366 
dt[ms]=    1.023 
dt[ms]=    2.331 
dt[ms]=    1.047 
dt[ms]=    2.310 
dt[ms]=    1.050 
dt[ms]=    2.335 
dt[ms]=    0.916 
dt[ms]=    2.351 
dt[ms]=    1.031 
dt[ms]=    2.334 
dt[ms]=    1.051 
dt[ms]=    2.302 
dt[ms]=    0.927 
dt[ms]=    2.366 
dt[ms]=    1.012 
dt[ms]=    2.347 
dt[ms]=    1.042 
dt[ms]=    2.302 
dt[ms]=    0.947 
dt[ms]=    2.322 
dt[ms]=    1.055 
dt[ms]=    2.310 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  120872.90337112002
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.