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: 31.497984000000002
dt[ms]=    0.000 
dt[ms]=    0.963 
dt[ms]=    2.313 
dt[ms]=    1.066 
dt[ms]=    2.298 
dt[ms]=    1.069 
dt[ms]=    2.320 
dt[ms]=    0.935 
dt[ms]=    2.299 
dt[ms]=    1.072 
dt[ms]=    2.307 
dt[ms]=    1.071 
dt[ms]=    2.308 
dt[ms]=    0.938 
dt[ms]=    2.306 
dt[ms]=    1.073 
dt[ms]=    2.298 
dt[ms]=    1.074 
dt[ms]=    2.317 
dt[ms]=    1.062 
dt[ms]=    2.299 
dt[ms]=    0.946 
dt[ms]=    2.310 
dt[ms]=    1.070 
dt[ms]=    2.308 
dt[ms]=    1.063 
dt[ms]=    2.310 
dt[ms]=    0.943 
dt[ms]=    2.299 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  94.64376322827019
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.