Comment by NkVczPkybiXICG
2 days ago
Why does the title say 1ns but the body of the article says 30ns (with hopes to eventually get it down to 5)?
2 days ago
Why does the title say 1ns but the body of the article says 30ns (with hopes to eventually get it down to 5)?
The 2nd revision of the hardware is 1ns in simulation, likely 5ns in real-world scenarios. The first revision of the hardware (which I saw at NAB) is more like 30ns (with 20ps jitter, I believe).
1ns is about the best you can do with the nearly 1 GHz carrier (as mentioned in a sibling comment).
The limit of a time sync protocol is not generally directly because of the carrier frequency. It can be a lot better or a lot worse depending on many other details. (E.g. the pulse per second from a GPS receiver can give time syncs down to nanoseconds).
It's the period of the carrier wave (900MHz)?
approximately, with assumptions.
Assuming ISM band in the US.
https://en.wikipedia.org/wiki/ISM_radio_band