6009: anti-aliasing filter

[tomatomato]

I'm using USB 6009 to measure acceleration at 1000 Hz. The acquired data seems to have aliasing components. Because the data sheet for 6009 does not mention anything about anti-aliasing filter, I guess USB6009 is a data acquisition system without AA filter. Is this correct?
Does anyone know a portable anti-aliasing filter suitable to be used with USB6009?

Thank you

[Nicholas_B]

Greetings Tomato,

The 6009 does not have a custom anti-aliasing filter.  The analog input circuitry does include a MUX, amplifier, ADC, and FIFO, but does not include a user-configurable filter.  The AI circuit components have their own intrinsic frequency responses as well, but a 1kHz is well within the range of this device and its components.  Our S-Series cards, such as the NI 6115, do have built-in anti-aliasing filters that can be set in software to 50 and 500 kHz. 

For more information on anti-aliasing filters and proper sampling rates, please refer to this KnowledgeBase:  Why Should I Use Anti-Aliasing Filters?

Regards,

Nicholas B, National Instruments