Problem in synchronization between a Task and a timed loop

[Principiant]

This is the second time that I post this message because I realized my question landed on the wrong side of the forum and no one has answered.

So I try for a second last time:

Hi everybody,

As usual I need help. I have attached my .vi to let you understanding the source of my first problem.

Sorry for the German names of the Vis.

I have a PCI 6289 installed on a  PC Desktop real time target.

I want to have the smaller jitter possible between Input and output. Since for the moment I have a jitter of 0.1 ms at 40 KHz sampling rate I thought that the cause of this random delay could have been the asynchronization between the While timed loop clock and the Hardware timing clock.

So I tried to synchronize them with the use of a Timing source.

Unfortunately the result is not the expected one.

When I press the execution arrow  all is happening is a millisecond or less of execution and then the program stops automatically without any error message,

Why the Vi is not working? Someone has an Idea?

Many thanks.

Principiant

[Broken_Arrow]

My first thought would be... you want less than 1mS resolution on a PC target? ... Running Windows?
To get a better feel for the error, monitor the error output of the timed loop itself.

[Principiant]

Hi thans for your answer,

The discussion and the problems are already advanced in another thread.

If you want to follow the discussion see here:

 http://forums.ni.com/ni/board/message?board.id=170&message.id=345956#M345956

Bye

Principiant