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: 23.498496
dt[ms]=    0.000 
dt[ms]=    3.333 
dt[ms]=    0.924 
dt[ms]=    2.316 
dt[ms]=    1.069 
dt[ms]=    2.296 
dt[ms]=    0.944 
dt[ms]=    2.302 
dt[ms]=    1.079 
dt[ms]=    2.307 
dt[ms]=    1.060 
dt[ms]=    2.305 
dt[ms]=    0.955 
dt[ms]=    2.296 
dt[ms]=    1.069 
dt[ms]=    2.313 
dt[ms]=    1.069 
dt[ms]=    2.300 
dt[ms]=    1.069 
dt[ms]=    2.303 
dt[ms]=    0.956 
dt[ms]=    2.309 
dt[ms]=    1.060 
dt[ms]=    2.302 
dt[ms]=    1.078 
dt[ms]=    2.312 
dt[ms]=    1.056 
dt[ms]=    2.317 
dt[ms]=    0.938 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  104882.21449339428
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.