I have purchased (on behalf of the BFTA) a pro-chrono digital chronograph.
I wanted to trial this alongside the usual chrono at GP2.
Unfortunately home trials have not been successful. Occasionally I can get it to read my S400 but have failed to get a single reading from my EV2- with and without diffusers. (I'm hoping that this is because that in my garden there isn't a clear view of the sky)
Does anyone have experience of using this chrono hence provide advice on how to get the best results from it.