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: 24.185952
dt[ms]=    0.000 
dt[ms]=    3.335 
dt[ms]=    3.244 
dt[ms]=    0.934 
dt[ms]=    2.283 
dt[ms]=    0.967 
dt[ms]=    2.298 
dt[ms]=    1.072 
dt[ms]=    2.300 
dt[ms]=    1.079 
dt[ms]=    2.281 
dt[ms]=    1.090 
dt[ms]=    2.300 
dt[ms]=    0.953 
dt[ms]=    2.299 
dt[ms]=    1.073 
dt[ms]=    2.283 
dt[ms]=    1.096 
dt[ms]=    2.299 
dt[ms]=    0.947 
dt[ms]=    2.300 
dt[ms]=    1.078 
dt[ms]=    2.283 
dt[ms]=    1.091 
dt[ms]=    2.300 
dt[ms]=    1.078 
dt[ms]=    2.300 
dt[ms]=    0.946 
dt[ms]=    2.284 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  106125.60632732097
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.