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: 26.998272
dt[ms]=    0.000 
dt[ms]=    2.261 
dt[ms]=    3.255 
dt[ms]=    0.941 
dt[ms]=    2.303 
dt[ms]=    0.940 
dt[ms]=    2.301 
dt[ms]=    1.079 
dt[ms]=    2.301 
dt[ms]=    1.069 
dt[ms]=    2.311 
dt[ms]=    0.943 
dt[ms]=    2.301 
dt[ms]=    1.070 
dt[ms]=    2.302 
dt[ms]=    1.076 
dt[ms]=    2.310 
dt[ms]=    1.062 
dt[ms]=    2.302 
dt[ms]=    0.952 
dt[ms]=    2.301 
dt[ms]=    1.070 
dt[ms]=    2.312 
dt[ms]=    1.068 
dt[ms]=    2.301 
dt[ms]=    1.070 
dt[ms]=    2.303 
dt[ms]=    0.950 
dt[ms]=    2.311 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  111.30001131080472
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.