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: 23.623488000000002
dt[ms]=    0.000 
dt[ms]=    1.285 
dt[ms]=    2.294 
dt[ms]=    0.950 
dt[ms]=    2.346 
dt[ms]=    1.029 
dt[ms]=    2.379 
dt[ms]=    1.001 
dt[ms]=    2.328 
dt[ms]=    0.922 
dt[ms]=    2.301 
dt[ms]=    1.070 
dt[ms]=    2.293 
dt[ms]=    1.081 
dt[ms]=    2.365 
dt[ms]=    1.036 
dt[ms]=    2.323 
dt[ms]=    0.933 
dt[ms]=    2.305 
dt[ms]=    1.057 
dt[ms]=    2.324 
dt[ms]=    1.043 
dt[ms]=    2.322 
dt[ms]=    0.933 
dt[ms]=    2.317 
dt[ms]=    1.070 
dt[ms]=    2.305 
dt[ms]=    1.064 
dt[ms]=    2.304 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  119699.6613345398
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.