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: 23.685984
dt[ms]=    0.000 
dt[ms]=    2.356 
dt[ms]=    3.252 
dt[ms]=    0.931 
dt[ms]=    2.309 
dt[ms]=    0.943 
dt[ms]=    2.298 
dt[ms]=    1.073 
dt[ms]=    2.304 
dt[ms]=    1.075 
dt[ms]=    2.310 
dt[ms]=    0.936 
dt[ms]=    2.306 
dt[ms]=    1.073 
dt[ms]=    2.298 
dt[ms]=    1.073 
dt[ms]=    2.316 
dt[ms]=    1.064 
dt[ms]=    2.298 
dt[ms]=    0.948 
dt[ms]=    2.304 
dt[ms]=    1.075 
dt[ms]=    2.309 
dt[ms]=    1.063 
dt[ms]=    2.305 
dt[ms]=    1.074 
dt[ms]=    2.298 
dt[ms]=    0.948 
dt[ms]=    2.308 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  121.1879828609936
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.