USB-6210: Noise and small analogue input values lead to saturation

[lichti]

I receive very noisy input values and saturation +10V or -10V if small voltages are applied.

I'm using a USB-6210 board on a Dell Latitude D820 and want to read analogue values +-10V into one or more analogue channels (differential mode).
The problems occurs with my VC6.0 software and actual NI drivers (8.3) as well as with the Measurement explorer.

I would be pleased to receive a hint how to solve the problem. (It ocurs even if the laptop runs from battery...)

Thank's a lot
  Ralf

[PGriese]

Hello lichti,

You may see your source float of the maximum working range (saturation) when in differential mode.

Please see the 621X Manual for actions to take:
Pages 5-2, 5-5, 5-6, 5-7
http://digital.ni.com/manuals.nsf/websearch/796D7F547CCC871186257248007A61DB