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: 26.998272
dt[ms]=    0.000 
dt[ms]=    0.996 
dt[ms]=    2.302 
dt[ms]=    0.955 
dt[ms]=    2.301 
dt[ms]=    1.041 
dt[ms]=    2.367 
dt[ms]=    1.036 
dt[ms]=    2.309 
dt[ms]=    1.065 
dt[ms]=    2.304 
dt[ms]=    0.944 
dt[ms]=    2.308 
dt[ms]=    1.073 
dt[ms]=    2.296 
dt[ms]=    1.083 
dt[ms]=    2.296 
dt[ms]=    1.072 
dt[ms]=    2.302 
dt[ms]=    0.924 
dt[ms]=    2.355 
dt[ms]=    1.046 
dt[ms]=    2.318 
dt[ms]=    1.064 
dt[ms]=    2.295 
dt[ms]=    1.077 
dt[ms]=    2.294 
dt[ms]=    0.955 
dt[ms]=    2.301 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  110.55865893611508
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.