3 ms·
Why does the title say 1ns but the body of the article says 30ns (with hopes to eventually get it down to 5)?
by NkVczPkybiXICG 5mo ago
Why does the title say 1ns but the body of the article says 30ns (with hopes to eventually get it down to 5)?
- larpingscholar 5mo agoIt's the period of the carrier wave (900MHz)?
- tejtm 5mo agoapproximately, with assumptions. Assuming ISM band in the US. https://en.wikipedia.org/wiki/ISM_radio_band https://en.wikipedia.org/wiki/ISM_radio_band
- geerlingguy 5mo agoThe 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).
- rcxdude 5mo agoThe 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).