sbrio analog input at -1V

[Slev1n]

Hey guys,

I have a question regarding the SBRIO9636 with the eval board. The analog is configured +-1V single ended. Now, if I read the analog input and there is no signal inserted into the port, it gives me -1V, why is it not giving me 0V? As it is a constant value, I cant imagine EMV problems.

If there is a signal inserted it works fine.

Kind regards

Slev1n

[Sam_Sharp · Accepted solution]

If the signal is physically disconnected, it will float.

Look here for an explanation: http://digital.ni.com/public.nsf/websearch/4E9B8B3F8FD3A31B862562B5004EA1D9?OpenDocument