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: 25.185888000000002
dt[ms]=    0.000 
dt[ms]=    1.311 
dt[ms]=    2.329 
dt[ms]=    1.009 
dt[ms]=    2.341 
dt[ms]=    0.916 
dt[ms]=    2.320 
dt[ms]=    1.089 
dt[ms]=    2.277 
dt[ms]=    1.092 
dt[ms]=    2.305 
dt[ms]=    1.071 
dt[ms]=    2.297 
dt[ms]=    0.957 
dt[ms]=    2.278 
dt[ms]=    1.080 
dt[ms]=    2.319 
dt[ms]=    1.074 
dt[ms]=    2.282 
dt[ms]=    1.078 
dt[ms]=    2.334 
dt[ms]=    0.909 
dt[ms]=    2.332 
dt[ms]=    1.045 
dt[ms]=    2.348 
dt[ms]=    1.027 
dt[ms]=    2.331 
dt[ms]=    0.907 
dt[ms]=    2.347 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  101381.29421508452
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.