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: 31.497984000000002
dt[ms]=    0.000 
dt[ms]=    1.011 
dt[ms]=    2.321 
dt[ms]=    0.936 
dt[ms]=    2.299 
dt[ms]=    1.070 
dt[ms]=    2.304 
dt[ms]=    1.081 
dt[ms]=    2.289 
dt[ms]=    1.072 
dt[ms]=    2.314 
dt[ms]=    0.941 
dt[ms]=    2.299 
dt[ms]=    1.053 
dt[ms]=    2.369 
dt[ms]=    1.033 
dt[ms]=    2.315 
dt[ms]=    0.926 
dt[ms]=    2.312 
dt[ms]=    1.080 
dt[ms]=    2.288 
dt[ms]=    1.071 
dt[ms]=    2.316 
dt[ms]=    1.066 
dt[ms]=    2.298 
dt[ms]=    0.945 
dt[ms]=    2.319 
dt[ms]=    1.084 
dt[ms]=    2.282 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  94.75049677520985
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.