Problem in taking voltage signal from photodiode to labview

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The user is attempting to connect a DET10A photodiode to a USB-6008 for voltage measurement in LabVIEW but is encountering issues, as LabVIEW shows incorrect values despite accurate readings on a multimeter and oscilloscope. The maximum output voltage from the photodiode for the measurement is 1.05 V. A suggestion was made to convert the photodiode's output signal to a serial bit stream to ensure compatibility with the DAQ's ports. The discussion highlights the need for proper signal conversion to achieve accurate readings in LabVIEW. The user seeks guidance on the appropriate connection method for the photodiode output.
shiju.joseph
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Hi frnds,

I have the photodiode DET10A and I am trying to take its output to computer using USB-6008. Labview feels that the DAQ’s ports are open and shows values 1.4 – 1.42. However, when I connect the photodiode to a multimeter or oscilloscope I see correct signal. the maximum photodiode output voltage for my measurement is 1.05 V.

What should I connect to the output end of the photodiode in order to get voltage measurement at the DAQ’s port.

Thank you very much

With regards
Shiju
 
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USB is a serial port. You need to convert the signal to a serial bit stream.
 
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