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: 26.810784
dt[ms]=    0.000 
dt[ms]=    1.099 
dt[ms]=    2.302 
dt[ms]=    1.069 
dt[ms]=    2.302 
dt[ms]=    1.084 
dt[ms]=    2.286 
dt[ms]=    0.950 
dt[ms]=    2.301 
dt[ms]=    1.076 
dt[ms]=    2.296 
dt[ms]=    1.089 
dt[ms]=    2.290 
dt[ms]=    0.949 
dt[ms]=    2.298 
dt[ms]=    1.076 
dt[ms]=    2.300 
dt[ms]=    1.088 
dt[ms]=    2.288 
dt[ms]=    1.075 
dt[ms]=    2.300 
dt[ms]=    0.950 
dt[ms]=    2.297 
dt[ms]=    1.089 
dt[ms]=    2.289 
dt[ms]=    1.075 
dt[ms]=    2.298 
dt[ms]=    0.951 
dt[ms]=    2.301 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  113.34476781057832
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.