Hi There, I noticed an odd behavior when using the Ocean Optics USB2000 Spectrometer. When I use the instrument driver to read the waveform, I get a waveform of length 2022 pixels. When I use Ocean Optics software (SprectraSuite) I get a waveform of length 2048. I first noticed this behavior when I was looking at the spectrum of a light source that is known to be ~870nm. Using the LabVIEW driver I saw a peak at ~857nm, but using the Ocean Optics software I saw the peak at 870nm as expected. Please let me know if you can give any insight to this problem. Thank you, Gregory

Just to tie this away, I did end up padding the front of the spectrum array with zeros. This is definitely something that Ocean Optics (or the writer of the drivers) should address. I did not change the driver because it might shoot me in the foot when using one of the other models. Also, I noticed that for the USB2000 Set Integration Time VI the units of time are milliseconds. The USB4000 (and what is suggested by the drivers/examples) use microseconds. Hopefully these drivers can get an update soon!

LabVIEW

Inconsistent behavior using Ocean Optics LabVIEW driver

Solved!

I found the most recent driver and installed it.

Thanks!!

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LabVIEW

Inconsistent behavior using Ocean Optics LabVIEW driver

Re: Inconsistent behavior using Ocean Optics LabVIEW driver