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: 25.810848
dt[ms]=    0.000 
dt[ms]=    1.175 
dt[ms]=    2.319 
dt[ms]=    1.062 
dt[ms]=    2.297 
dt[ms]=    1.069 
dt[ms]=    2.313 
dt[ms]=    1.068 
dt[ms]=    2.310 
dt[ms]=    0.934 
dt[ms]=    2.312 
dt[ms]=    1.072 
dt[ms]=    2.295 
dt[ms]=    1.070 
dt[ms]=    2.324 
dt[ms]=    0.934 
dt[ms]=    2.296 
dt[ms]=    1.072 
dt[ms]=    2.313 
dt[ms]=    1.069 
dt[ms]=    2.309 
dt[ms]=    1.058 
dt[ms]=    2.313 
dt[ms]=    0.949 
dt[ms]=    2.299 
dt[ms]=    1.065 
dt[ms]=    2.306 
dt[ms]=    1.079 
dt[ms]=    2.298 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  100020.27569356491
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.