c-RIO Real-Time clock accuracy

[Terry_ALE]

I plan to send an Network Time Protocol (NTP) (not SNTP) message to set the time of RT controller in the c-RIO.  How accurately will the c-RIO this time.  Will it hold it in the milliseconds, microseconds?

I cannot use GPS. 

[jareds]

Since the accuracy is listed as 200 ppm (for all conditions; 35 ppm at 25 degrees C), you shouldn't expect to see a drift of more than 200 microseconds per second.  Also, NTP is listed having accuracies of up to 200 microseconds on a local network.  Therefore, the cRIO should have a timing accuracy of around 0.5 ms.