Measuring the constant volatge by using DAQ

Dear All.
Sorry for disturbing again,i have one problem in measuring analog I/P,i created a analog VI measurement subVI,by using this SubVI i am going to have some 6 times repeated measurement,when i run my main VI 1st 2 measurement became low and 3,4,5 will Ok then 6th will be high,when i run subVI continuously then it measuring OK for every iteration,why changes happening while running mainVI,and i need Digital multiple line output.I created by using Case structure but i didn't get correct output,1 to 3 cases its working fine but othercases it will not correct. herewith i attached by VI,please help me.
I am going to measure Voltage then converting that into resistance by using Ohm's Law.
Thanking You.
Raikar A G
Attachments:
Anlog Input.vi ‏81 KB
BigTech.vi ‏25 KB
Digital-Output.vi ‏33 KB

First of all, zip up your files when posting more than 1 or 2 files.
Secondly, why are you clearing your tasks and resetting your card each loop?  You should initialize your tasks once before the loop, read/write inside of the loop, and close/clear/reset once after the loop.
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