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Re: [Openbts-discuss] Need help to resolve error
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From: Alexander C. <ale...@gm...> - 2011-10-19 14:30:29
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It won't harm if you just try. But yes, your calculations look correct. I never recall should you add or subtract and always just try. On Wed, Oct 19, 2011 at 18:22, Akib Sayyed <aki...@gm...> wrote: > > so can i kalibrate it as per given value in previous mail > On Wed, Oct 19, 2011 at 7:49 PM, Sylvain Munaut <24...@gm...> wrote: >> >> > Btw, 1.5kHz offset looks way to much for ClockTamer. According to TCXO >> > specs you can't get offset more then 300 HZ at 946MHz or 6Hz at 20 >> > MHz. >> >> Huh no ... 0.28 ppm is only the short term stability. Datasheets says >> the initial calibration can be off up to 1 ppm. (at 25C, so add the >> temperate drift to that, then the aging). >> >> Then of course the BTS itself can be 0.1 ppm off and the fact kal >> isn't perfect. >> >> So all in all 1.5kHz looks very possible :) >> >> Cheers, >> >> >> Sylvain > > > > -- > Akib Sayyed > Matrix-Shell > aki...@gm... > aki...@ma... > Mob:- +91-966-514-2243 > > > -- Regards, Alexander Chemeris. |