Encoder Debounce

[Caustic Photon Render Pass]

I am using the Bourns non-detented encoder (PEC11-4020F-N0024), with 24 pulses per revolution.

I find at a 1ms sample frequency, that the encoders are really "jumpy".

When I turn the encoder clockwise very slowly I will see numbers jump, for example: 0,1,2,1,3,4,6,5,6,7,etc I would expect the output to be smooth: 0,1,2,3,4,5,6,7,etc

I have tried using various techniques to reduce this bounce with not much success. One I tried was this:

http://www.kennethkuhn.com/electronics/debounce.c

The integration method he uses seems sound, but I am still getting jumpy output.

Do these encoders have too many PPR? Or are my expectations too high?

Any ideas?

[Rics]

I've also bougth these encoders, but i've havent tested yet.

I hope to test them in the weekend.

[Rics]

Tested yesterday and i got the behaviour reported on my

Btw i'm using the same encoder but the one with pushbutton, PEC11-4015F-S0024