Counter/timer high resolution

Dear all
I have developed a counter-timer program by using NI PCI-6601 card and LabVIEW 7.1 on P-IV with Windows XP.
It gives satisfactory results when I apply i.e.
                                                              Input 100000 Hz at 1 sec high Time and 1.00E-7 sec low time which gives output 100000 counts,
                                                              Input 100000 Hz at 0.5 sec high Time and 1.00E-7 sec low time which gives output 50000 counts and
                                                              Input 100000 Hz at 0.2 sec high Time and 1.00E-7 sec low time which gives output 20000 counts
But when I goes to achieve high resolution it gives incorrect data i.e.
                                          Input 100000 Hz at 0.1sec high Time and 1.00E-7 sec low time which gives output 20000/10000 counts, and below this value it also gives wrong output data.
                                                     I want to achieve .001 sec high time.
                                                     Please help me to solve this problem.
Best Wishes
Ishfaq

Hello Neal M,
Thanks for reply and sparing time for me. I am using counter-0 for reading and counter-2 for pulse output.
I want to achieve the following readings/counts at respective inputs which are following:
Input 100000 Hz at 0.1sec high Time and 1.00E-7 sec low time then the output should be 10000 counts,
Input 100000 Hz at 0.01sec high Time and 1.00E-7 sec low time then the output should be 1000 counts and
Input 100000 Hz at 0.001sec high Time and 1.00E-7 sec low time then the output should be 100 counts.
I am also sending you "counter timer high resolution.vi" in attachment.
Thanks a lot again in helping me.
Ishfaq
Attachments:
counter timer high resolution1.vi ‏192 KB

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