Acquire encoder position with Motion and DAQ

Hi,
I am trying to acquire an encoder position with Motion. It seems impossible to set the frequency of the acquisition with Motion and I must poll for the position in a do-while loop.
I have read in a lot of threads that one can use RTSI lines to retrieve encoder position with a DAQ Board though it is acquired with a Motion board. But there are no examples at all about this.
To sum up, I need to send Encoder Phase A to RTSI0, Encoder PhaseB to RTSI1 (which I already do), retrieve info with a DAQ device and then calculate rpm.
Christophe
PS: please don't answer with measure angular position.vi or explain me in what this Vi can help me

Hi Christophe,
I'm not sure I understood well what you need. You have the angular position and you need to know the timing, am I right? Can you use an other counter on your card to get the period (or the frequency) of your signal? From that, I think you should be able to calculate the velocity.
I hope this helps,
Charlotte F. | CLAD
National Instruments France
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Message was edited by: Tapz

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[....you might want to try using the animation codec..millions of colors...]
I gave that a shot this morning, and I'm having the same problem. See what's going on now is after changing the Field Order to even for the footage media, all of it looks decent except for the ones on an angle, croped or resized and I see this in both Motion's preview and the final render when I play it back in FCP. So as per your suggestion I rendered with the animation codec (filed rendering) and it still has it. Its just odd to me that it does that, like I said before I've worked in the DV/DVCPRO - NTSC codec with FCP and AE for years with no quality degrade. The reason I have always do that is that's what I capture to and that what my FCP project is so to keep it all consistant. BTW, this is going network and cable, no different than I usually do.
[...are you enabling field rendering in the Canvas or in the export settings?]
Yes I am, sorry, I should have pointed that out. I have done combinations of different QT codecs with and without field rendering turned on to see different results. None of course resolves this issue.
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Acquire encoder position with Motion and DAQ

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