Hi, I work at a civil engineering research laboratory. We have had the same hardware and software (more or less) installed there for about five years. Yesterday, we noticed that the acquired signals from our hydraulic controller analog outputs were drifting slightly, perhaps in the range of 5-10 millivolts. It was not clear whether other sensor channels (we use lots of strain gages, string pots, and lvdts) were affected. We tried viewing these signals on an oscilloscope and couldn't detect the variations. After a reboot, the problem was solved with the same software and hardware. Any ideas what could have happened and maybe how we can prevent this?
Our setup is as follows: Windows XP SP3, NI-DAQmx 8.0, Measurement Studio 7.1, PCI-6052E,4 SCXI-1001 chassis, 6 SCXI-1102 modules, 32 SCXI-1520 modules. The analog outputs are connected in differential mode to an 1102 module.
-drew
