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: 23.248512
dt[ms]=    0.000 
dt[ms]=    0.987 
dt[ms]=    2.343 
dt[ms]=    1.062 
dt[ms]=    2.325 
dt[ms]=    0.894 
dt[ms]=    2.323 
dt[ms]=    1.060 
dt[ms]=    2.317 
dt[ms]=    1.067 
dt[ms]=    2.306 
dt[ms]=    1.073 
dt[ms]=    2.302 
dt[ms]=    0.946 
dt[ms]=    2.304 
dt[ms]=    1.076 
dt[ms]=    2.278 
dt[ms]=    1.090 
dt[ms]=    2.291 
dt[ms]=    1.075 
dt[ms]=    2.315 
dt[ms]=    0.943 
dt[ms]=    2.308 
dt[ms]=    1.073 
dt[ms]=    2.284 
dt[ms]=    1.087 
dt[ms]=    2.284 
dt[ms]=    0.970 
dt[ms]=    2.302 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  117318.5056256974
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.