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: 31.560480000000002
dt[ms]=    0.000 
dt[ms]=    1.033 
dt[ms]=    2.301 
dt[ms]=    0.935 
dt[ms]=    2.307 
dt[ms]=    1.079 
dt[ms]=    2.308 
dt[ms]=    0.930 
dt[ms]=    2.304 
dt[ms]=    1.079 
dt[ms]=    2.333 
dt[ms]=    1.036 
dt[ms]=    2.305 
dt[ms]=    1.080 
dt[ms]=    2.297 
dt[ms]=    0.940 
dt[ms]=    2.306 
dt[ms]=    1.080 
dt[ms]=    2.302 
dt[ms]=    1.062 
dt[ms]=    2.306 
dt[ms]=    0.956 
dt[ms]=    2.297 
dt[ms]=    1.046 
dt[ms]=    2.364 
dt[ms]=    1.047 
dt[ms]=    2.325 
dt[ms]=    1.037 
dt[ms]=    2.310 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  92.82481519658134
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.