Shahriar,
Unfortunately the resolution of the software timer in LabVIEW is 1ms. There is no way to obtain a microsecond software timer in LabVIEW, or reliably in Windows for that matter.
Depending on the DAQ board you have, and if it contains counter/timer lines, you may be able to configure a hardware timer. You could configure a counter for time measurement and after 10us has elapsed you could continue with your program.
For example, take a look at the LabVIEW shipping example titled, "Count Time". If you extend the precision of the elapsed time display to more than the configured 2 decimal places you will be able to see microseconds.
I hope this helps.
Regards,
Justin Britten