How to get remote source timestamp at short time intervals

[EdHarris]

Hello,

I want to get a time stamp from a remote time source at something like 4 minute intervals and have been looking at UDP and TCP client example VIs but have not found suitable address and port numbers to make it work. I know the pc uses ntp for time correction but dont want to use the pc time as a baseline. can anyone suggest a good way to go about this? 

[Bob_Schor]

You might do a Web search using "LabVIEW NTP".  There are solutions for LabVIEW Real-Time readily available.

Bob Schor

[EdHarris]

Thanks, found a great solution "help with connecting to NIST NTP server on port 123"

[Bob_Schor]

Once you get this working, why don't you post it back to this thread and mark it as a Solution?  This helps others who come here wondering "How do I ...".  Glad I set you on the right track.

Bob Schor

[EdHarris · Accepted solution]

Here is the solution provided by Altenbach in the post mentioned above. I changed the IP address to a local server and it worked.

QueryNTPparse2.vi ‏29 KB

[EdHarris]

Hi Altenbach,

That last version of your code doesnt contain the correction for round trip delay does it? If not, any suggestion how to set about including it?