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 23 Sampling time 40000.0
Number of pixels: 2048
acquiring the readoutnoise patterns
Loop 1 of infinite
Waiting on trigger
Spectra acquired
Background acquired
Spectra acquired
board temperature: 32.18544
dt[ms]=    0.000 
dt[ms]=    1.155 
dt[ms]=    2.305 
dt[ms]=    1.075 
dt[ms]=    2.301 
dt[ms]=    1.067 
dt[ms]=    2.313 
dt[ms]=    1.067 
dt[ms]=    2.302 
dt[ms]=    0.943 
dt[ms]=    2.302 
dt[ms]=    1.077 
dt[ms]=    2.311 
dt[ms]=    1.060 
dt[ms]=    2.302 
dt[ms]=    0.952 
dt[ms]=    2.301 
dt[ms]=    1.069 
dt[ms]=    2.313 
dt[ms]=    1.068 
dt[ms]=    2.300 
dt[ms]=    1.071 
dt[ms]=    2.302 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  81.00195215461659
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.