Hi,
What version of Industrial SDK are you using?
You can change Clock.tickPeriod = 100 in app.cfg. This will change sleep interval to 100us, Then you need to adjust OS_TICKES_IN_MILLI_SEC for all the tasks that need to sleep for milli sec duration. However this is not the only way.
You can also read analog interrupt from a timer interrupt task or any thing equivalent for example...