# Digital Counter signal oscillation

I've a digital counter (Kubler Codix 908) with integrated 30Hz interference input filter integrated, but sometimes (when the contact that will increment the counter is closed) it counts two pieces... the mechanical counter work perfectly but the digital one is affected by signal interference. Is it possible to use a RC snubber (in parallel with the contatc) to solve the problem? Wich values of R and C I should use? Thanx in advance, Andrea from Italy.

As to what values, try RC on the order of 20-50 msec, to start, and adjust if the behavior isn't right. (i.e., $0.01\ \mu F$ and $20 k\Omega$)