HSDIO 6556: How to measure the time period between 2 accepted strobe triggers ?

Hi,

I am using HSDIO6556, configured as: "niHSDIOProperties.DigitalEdgeStartTriggerEdge RisingEdge" & "ConfigureSampleClock: Strobestr 1000000" . I am expecting trigger signals to the STROBE pin at 1000000 Samples/second. My questions are:

Q1) Does it matter what value i program to the "Strobestr" ? I suppose, it requires to be more than my expected trigger rate.

Q2) Is there any means of measuring the time interval between accepted STROBE signals ??

Thanks,

Antony