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: 24.373440000000002
dt[ms]=    0.000 
dt[ms]=    3.398 
dt[ms]=    3.243 
dt[ms]=    0.939 
dt[ms]=    2.303 
dt[ms]=    1.074 
dt[ms]=    2.380 
dt[ms]=    0.854 
dt[ms]=    2.323 
dt[ms]=    1.061 
dt[ms]=    2.303 
dt[ms]=    1.076 
dt[ms]=    2.297 
dt[ms]=    1.082 
dt[ms]=    2.293 
dt[ms]=    0.950 
dt[ms]=    2.301 
dt[ms]=    1.072 
dt[ms]=    2.301 
dt[ms]=    1.091 
dt[ms]=    2.288 
dt[ms]=    0.944 
dt[ms]=    2.303 
dt[ms]=    1.075 
dt[ms]=    2.300 
dt[ms]=    1.081 
dt[ms]=    2.294 
dt[ms]=    0.951 
dt[ms]=    2.301 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  118.74883252502319
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.