Quadrant photodiode

[Benvalet]

Hi All,

I am having a problem working with signals from my position sensitive photodiode (PSPD). I have been using the attached FPGA vi to acquire my 3 signals (vertical, horizontal and sum)  then use DMA FIFO to transfer the signals to the host computer for constructing my virtual PSPD (see the attached HOSTT and PSPD files). This works for me but not so well since I have no full control.

I would like to use a Waveform Graph to construct the virtual PSPD. I am using labview 2011.

Could someone kindly suggest to me some ideas or hints.  I will greatly appreciate.

Best Regards,

Ben

[mikeporter]

A couple questions:

1. You say it isn't working well for you. What is the problem?

2. You also mention not having "full control". What do you mean?

Mike...