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: 24.623424
dt[ms]=    0.000 
dt[ms]= 3315.336 
dt[ms]=    2.287 
dt[ms]=    3.256 
dt[ms]=    3.249 
dt[ms]=    3.250 
dt[ms]=    0.934 
dt[ms]=    2.291 
dt[ms]=    1.088 
dt[ms]=    2.301 
dt[ms]=    0.945 
dt[ms]=    2.303 
dt[ms]=    1.076 
dt[ms]=    2.294 
dt[ms]=    1.060 
dt[ms]=    2.399 
dt[ms]=    0.983 
dt[ms]=    2.322 
dt[ms]=    0.940 
dt[ms]=    2.291 
dt[ms]=    1.088 
dt[ms]=    2.299 
dt[ms]=    1.070 
dt[ms]=    2.302 
dt[ms]=    0.951 
dt[ms]=    2.290 
dt[ms]=    1.082 
dt[ms]=    2.302 
dt[ms]=    1.077 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  116.88498090516023
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.