Programmable input filters 9435

[ASTDan]

Hello,

Is the NI 9435 capable of a programmable input filter?

Thanks

[ASTDan]

This is the code I want to use on the 9435

http://zone.ni.com/devzone/cda/tut/p/id/4287#toc0

Is this posible.  I don't have a digital filter option in my MAX API when I try to do this.  If the 9435 isn't cabable of doing this is there another technique that would acomplish the same thing?

Thanks

[ASTDan]

I have solved it in software using the timout event

I have the change detection digital read in an event loop.  I store the digital data in a shift register in the event loop, and set the timout value to my filter time.

When a change is detected I set the timeout case in the event loop to my filter time.

If I don't see a change event my timeout event fires and sends the digital data stored in the shift register to my consumer loop.  After the timeout event fires I set the timout to -1.  A timout value is only trigged when I get a digital change event.

This seems to work well.

Hopefully NI will add programatic filtering on the 9435   That is my wish

[Corby_B]

Hello ASTDan,

Glad to hear that the software solution you found worked for you! I know that the 65XX series have programmable filters but not on the 94X series for C-series. It does have an AC smoothing filter as indicated on the page 13 of the manual but its not programmable. I would like to say that we are always looking for ways to improve our products and if you follow the link below you can make a product suggestion of your own!

Product Suggestion Center

Let us know if you have any other questions or concerns!

Cheers!

Corby_B

http://www.ni.com/support