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: 24.560928
dt[ms]=    0.000 
dt[ms]=    0.988 
dt[ms]=    2.309 
dt[ms]=    0.949 
dt[ms]=    2.296 
dt[ms]=    1.066 
dt[ms]=    2.304 
dt[ms]=    1.081 
dt[ms]=    2.306 
dt[ms]=    1.060 
dt[ms]=    2.318 
dt[ms]=    0.943 
dt[ms]=    2.306 
dt[ms]=    1.056 
dt[ms]=    2.316 
dt[ms]=    1.069 
dt[ms]=    2.310 
dt[ms]=    1.039 
dt[ms]=    2.321 
dt[ms]=    0.935 
dt[ms]=    2.298 
dt[ms]=    1.078 
dt[ms]=    2.284 
dt[ms]=    1.084 
dt[ms]=    2.289 
dt[ms]=    1.089 
dt[ms]=    2.321 
dt[ms]=    0.934 
dt[ms]=    2.321 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  110359.65751281225
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.