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]=    2.270 
dt[ms]=    1.051 
dt[ms]=    2.310 
dt[ms]=    0.933 
dt[ms]=    2.184 
dt[ms]=    1.194 
dt[ms]=    2.321 
dt[ms]=    1.050 
dt[ms]=    2.183 
dt[ms]=    1.071 
dt[ms]=    2.309 
dt[ms]=    1.061 
dt[ms]=    2.185 
dt[ms]=    1.193 
dt[ms]=    2.310 
dt[ms]=    1.061 
dt[ms]=    2.183 
dt[ms]=    1.071 
dt[ms]=    2.320 
dt[ms]=    1.052 
dt[ms]=    2.307 
dt[ms]=    1.072 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  82.4080483714013
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.