Problem in taking voltage signal from photodiode to labview

[shiju.joseph]

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

 

[anorlunda]

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