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: 28.498176
dt[ms]=    0.000 
dt[ms]=    2.334 
dt[ms]=    3.253 
dt[ms]=    3.258 
dt[ms]=    0.929 
dt[ms]=    2.293 
dt[ms]=    0.952 
dt[ms]=    2.313 
dt[ms]=    1.065 
dt[ms]=    2.297 
dt[ms]=    1.075 
dt[ms]=    2.310 
dt[ms]=    0.947 
dt[ms]=    2.295 
dt[ms]=    1.075 
dt[ms]=    2.307 
dt[ms]=    1.075 
dt[ms]=    2.293 
dt[ms]=    1.074 
dt[ms]=    2.321 
dt[ms]=    0.935 
dt[ms]=    2.293 
dt[ms]=    1.076 
dt[ms]=    2.310 
dt[ms]=    1.069 
dt[ms]=    2.305 
dt[ms]=    1.065 
dt[ms]=    2.308 
dt[ms]=    0.947 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  92029.07532375451
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.