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: 23.186016000000002
dt[ms]=    0.000 
dt[ms]=    1.320 
dt[ms]=    2.295 
dt[ms]=    1.071 
dt[ms]=    2.296 
dt[ms]=    1.111 
dt[ms]=    2.267 
dt[ms]=    0.943 
dt[ms]=    2.302 
dt[ms]=    1.084 
dt[ms]=    2.297 
dt[ms]=    1.090 
dt[ms]=    2.310 
dt[ms]=    0.932 
dt[ms]=    2.316 
dt[ms]=    1.048 
dt[ms]=    2.305 
dt[ms]=    1.109 
dt[ms]=    2.267 
dt[ms]=    1.066 
dt[ms]=    2.303 
dt[ms]=    0.957 
dt[ms]=    2.295 
dt[ms]=    1.091 
dt[ms]=    2.290 
dt[ms]=    1.074 
dt[ms]=    2.294 
dt[ms]=    0.947 
dt[ms]=    2.299 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  121638.37258148803
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.