Hi,
I've been using a microscope who runs on LabView for some time now and I recently installed a subVI to control a Sutter ROE-200 moving platform. Since then, I've noticed a constant signal in every physical channel (see picture below) by using an oscilloscope. I need to use a PMT detector to measure very low light intensity and the background signal is often higher than the one resulting from a photon. I've measured the frequency of this signal to be 40 KHz.
Is there any way to monitor in real time what is the signal passing through the channels, and to reset or modify it?
Thank you!