Multifunction DAQ

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Pre-trigger filtering on analog channel

Is there a way to add a low-pass filter ahead of the trigger logic when trying to do an analog trigger? I am using DAQ assistant to configure and acquire an analog voltage measurement to capture a motor start-up after a switch closure and it seems to be triggering erratically after the switch is closed. I suspect it is triggering on noise because if I test my vi with a function generator as the voltage source it works fine. I am using a PCI-6250 and LabView 7.0.
Thanks,
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Hi,

As far as I know, the trigger circuit of the DAQ boards works on the signal itself, so you cannot do modifications on the signal by software.
Maybe if you do that treatment by electronic means before feeding it to the DAQ board you can solve the problem.

Regards,
Paulo
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