Hi all, hese is a Synchron TDMA, or a DBS frequency... http://www5e.biglobe.ne.jp/~kaorin57/Synchronous%20TDMA%20Direct%20Satellite%20Broadcasting%20Network%20%28English%29.pdf http://ieeexplore.ieee.org/Xplore/login.jsp?url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel5%2F8429%2F26550%2F01182532.pdf%3Farnumber%3D1182532&authDecision=-203 Regards, Karesz
2010/11/28 Magnus Danielson <mag...@rubidium.dyndns.org> > On 11/28/2010 09:42 AM, Poul-Henning Kamp wrote: > >> In message<75891fad-425d-4081-999a-3864a6057...@standingwave.org>, Peter >> Loron >> writes: >> >> Hello folks. I have a box of oscillators that I'm trying to get the >>> datasheet for. Google and the CTS website haven't been helpful. >>> >>> Most interestingly, this thing has 5 pins. The label on the box says the >>> customer was Agilent. >>> >>> Any ideas? Thanks. >>> >> >> The frequency sounds like something that could be related to SONET >> communications... >> > > Doesn't match up very well... 42,192 MHz doesn't have suitably even numbers > to any of the rates. Factorisation gives > > 42192 kHz = 2^4 * 3^2 * 293 kHz > > The SDH/SONET rate of 155,52 Mb/s breaks up as > > 155520 kHz = 2^7 * 3^5 * 5 kHz > > Other SDH/SONET clocks is /3, /8, *4, *16, *64, *256 variants of the above, > and sometimes for internal use other sub-divisions. The /8 variant is often > seen as 19,44 MHz. > > I can't come up with a suitable PDH rate either. > > We are looking for a system where 293 turns up, and SDH/SONET isn't it. > > Cheers, > Magnus - does SDH/SONET clocking for a living > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.