11-21-2005 11:39 AM
11-22-2005 03:12 PM
11-22-2005 04:09 PM
11-23-2005 09:14 AM
Hi Matt-
When you say you traced the signals to the embedded controller, do you mean that removing the controller removed the problem or that you literally traced the 1MHz signal to some point on the controller. When you remove the controller are you still running the DAQ card via MXI or some other remote means? If the system is not operational I would expect to see the noise being induced if it is indeed coming from the system itself.
When you acquire data with the DAQ card do you see similar noise? A great example to try for LabVIEW would be "Cont Acq&Graph Voltage-Int Clk.vi" from the NI Example Finder (Help>>Find Examples) under Hardware Input and Output>>DAQmx>>Analog Measurements>>Voltage. Please let me know if the spike shows in the data read by the DAQ card as well.
Thanks-