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How long time needed to get accurate frequency from SDH

Hi, I do not know SDH, thus seek help here. I am working on a project which needs the accurate frequency information. We plan to get that from E1/T1 dropped from SDH. As far as I know, SDH has pointer adjustment to accommodate different signal sources or other imperfections. I want to know the maximum SDH pointer adjustment period for a stationary resource (which has a fixed, small frequency offset). With that SDH time adjustment period, I can design an average fuction to get the accurate frequency.

Thanks a lot.

Reply to
fl
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A little further information adds. Once I was involved in a GSM project, I had the impression that the time was about 15 minutes. I am not sure about the time because it was too long ago. It onl sounds to me in the minutes order or so.

Thanks.

Reply to
fl

WWV.

Reply to
Lucifer

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