How to increase the resolution of the timer loop?

Hi all

I use myRIO 1900 for my project of Active noise cancellation. I need to process the audio signal @44. rate of 1 kHz sampling and 50 samples per image. So, I use myRIO personality of broadband.

Now my problem is simple, I want to measure the time each iteration (loop). I went for the number of cycles normal (msec). Used as a standard [https://decibel.ni.com/content/docs/DOC-11078].

But my value of the indicator oscillates between 1 and 2. It is supposed to be 1.13msec, but how to find the exact value of timer?

I think, I can't increase the resolution of tick count (msec) as it is by default is 1 ms resolution and I can't use the clock source external I use myRIO.

Help me calculate the precise time of loop.

Thank you.

RT has express VIs for timers.  You can use this: http://zone.ni.com/reference/en-XX/help/371361J-01/lvexpress/tick_count/

Tags: NI Software

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