If uhd support a more precise In band signaling timestamp in the resolution 1ns or 10ns?

Hi Matt,
I recently learn the uhd project which contain a double type timestamp
in
band signaling. I want to know if this change really take a more precise
timestamp from usrp hardware or it just an interface change to meet
other
hardware? For now, I want to measure the time of flight to count a
distance,
so the timestamp should be as precise as at least 100ns to meet my need.

Thanks!

On 06/04/2010 02:34 AM, John Wu wrote:

Hi Matt,
I recently learn the uhd project which contain a double type timestamp
in band signaling. I want to know if this change really take a more
precise timestamp from usrp hardware or it just an interface change to
meet other hardware? For now, I want to measure the time of flight to
count a distance, so the timestamp should be as precise as at least
100ns to meet my need.

The UHD will give you sample times which are accurate to 1 cycle. On
the USRP2 this is 10ns.

Matt

Hi,
John,Can you tell me how to use the timestamp, I only require the
precise
as 100ms?
I google it and still do not know how to do it, would you so nice to
give me
some information?
Thanks very much!
Best Regards!

John Wu-6 wrote:


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