Thanks, that looks just fine.
Here is one (SI 100): https://www.picoquant.com/products/category/accessories/adapters-splitters-cables-various-accessories-for-photon-counting-setups
Ok, thanks! do you know an easy in-line inverter like mini-circuit or digikey? Can also redesign the detector I gues to produce positive signals, just it might be easier if there was a simple inverter if you are aware of? thanks Abaz
No. You have to use an inverter for one of your signals.
I would like to be able to trigger in this fashon: channel 0 > 0.1 and. channel 1< -0.1, because I have a positive and a negative signal. Can DRS4 (5) Eval board do this kind of trigger?