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: 25.560864000000002
dt[ms]=    0.000 
dt[ms]=    3.343 
dt[ms]=    0.900 
dt[ms]=    2.314 
dt[ms]=    0.942 
dt[ms]=    2.323 
dt[ms]=    1.066 
dt[ms]=    2.293 
dt[ms]=    1.081 
dt[ms]=    2.316 
dt[ms]=    1.047 
dt[ms]=    2.334 
dt[ms]=    0.924 
dt[ms]=    2.300 
dt[ms]=    1.068 
dt[ms]=    2.312 
dt[ms]=    1.049 
dt[ms]=    2.320 
dt[ms]=    0.919 
dt[ms]=    2.363 
dt[ms]=    1.034 
dt[ms]=    2.296 
dt[ms]=    1.088 
dt[ms]=    2.307 
dt[ms]=    1.070 
dt[ms]=    2.301 
dt[ms]=    0.953 
dt[ms]=    2.305 
dt[ms]=    1.051 
Acquring readoutnoise patterns
The readoutnoise patterns acquired  104558.88475265351
end
Detected device change on USB
The interface was claimed successfully.
Closing interface 0.