How can I get amplitude in spectral irradiance(W⋅m−2⋅nm−1) against wavelength for ocean optics spectrometer HR2000 in Labview?

[Gopikishore]

Hello,

I have successfully calibrated my Ocean Optics HR2000 Spectrometer and can get results in wavelength(nm) vs Irradiance (W⋅m⁻²⋅nm⁻¹) with SPECTRA SUITE software. 

But I need to control the spectrometer with LabView. I have successfully installed the drivers and can collect the spectrum values for different wavelengths. But I can not figure out how I can get the amplitude values in Irradiance(W⋅m⁻²⋅nm⁻¹).

I couldn't find any information to resolve this problem. Can you guys please let me know how I can resolve it or where I can find the relative information to resolve this issue?

The .vi file I have attached is a basic code that I used to test my spectrometer.

Thanks in advance.

Looking forward to your response.

Best regards,

Vayalthota Gopikishore

[Kyle97330]

I believe that irradiance isn't a measure that the hardware does directly.  The HR2000 itself just has a linear pixel array inside it that reports its values back to the PC.  The spectrometer itself has no way of knowing anything else. 

So the calibrations in SpectraSuite that you run are just there to set up the math needed to convert those pixel array values in ADC counts into Irradiance.  I'm pretty sure you need to either continue using their software, or figure out how to convert the values yourself.  I'm just a programmer who uses the OO drivers for automation, not an optical engineer, so I can't help you beyond that.

[Gregory]

The user manual is pretty detailed with equations and steps to show how this calculation is done. Have you seen that already? Pg 154 of the manual, Pg 166 on the PDF: https://mmrc.caltech.edu/Biologic%20Stopped%20Flow/Manuals/Ocean%20Optics/SpectraSuite.pdf