lab view data sampling

[Dost]

I am using NI E series card. i am acquiring data from two pressure transducer and one flow meter .I have used config .vi AI start .vi and AI read .vi.I am writing the acquire data in text file with time.my loop is excutes after 1 second.i have set 1000 buffer for the AI config and numberof scan/secon in AI start.My problem is that  there is a lost of data every after 10 or a5 second .example i will keep recieveing dat for say 15 seconds than 16th second data is lost and i will get 17 th second.and it goes on any idea what iis caused of this and how can i improve it.

Dost.

[mikeporter]

Can you post your code so we can look at it. At the sample rate you're talking about it's probibly a pretty simple logic error.

Mike...