Large Range of Frequencies using Two Counters Measurement Method on PXI 6229

Hi All,

I was reviewing the documentation on NI's site regarding on setting up a task for taking a measurement:

http://zone.ni.com/reference/en-XX/help/370471AE-01/daqmxcfunc/daqmxcreatecifreqchan/

I had a question regarding the divisor parameter of this fuction. It mentions a rollover count error, however it doesn't mention much else. Can anyone provide me some more details on the nature of the error and how to know if it occurred?

Thanks