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]=    2.361 
dt[ms]=    0.920 
dt[ms]=    2.350 
dt[ms]=    0.916 
dt[ms]=    2.299 
dt[ms]=    1.075 
dt[ms]=    2.299 
dt[ms]=    1.074 
dt[ms]=    2.303 
dt[ms]=    1.073 
dt[ms]=    2.315 
dt[ms]=    0.938 
dt[ms]=    2.307 
dt[ms]=    1.060 
dt[ms]=    2.303 
dt[ms]=    1.052 
dt[ms]=    2.360 
dt[ms]=    1.048 
dt[ms]=    2.320 
dt[ms]=    0.922 
dt[ms]=    2.305 
dt[ms]=    1.072 
dt[ms]=    2.313 
dt[ms]=    1.065 
dt[ms]=    2.301 
dt[ms]=    0.941 
dt[ms]=    2.310 
dt[ms]=    1.068 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  112.1589205465831
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.