Jan Kiszka wrote: > Karl Reichert wrote: > > Hello, > > > > I have again a question concerning the master's jitter - the > > difference between scheduled and real transmission time. Just to make > > sure I understood it right ... > > > > The offset between global and local clock is calculated without > > respect to master's jitter. Same with transmission time. So we only > > need to respect master's jitter if we are calculating a time relative > > to a Synchronisation frame, right?! > > Nope. RTnet implements an atomic transmission time stamp that allows to > compensate most of the sender's software-related TX jitter, and this > information is applied to all calculations. It would make no sense to > restrict its usage only on internal frame timing. > > Jan
But where do I need it then (except for maybe backup masters)? As you told me before, the offset between TDMA slots has to be chosen big enough to compensate also master's jitter. So why do we need to know then master's jitter (if we forget about backup master for a moment)? Karl ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ RTnet-users mailing list RTnet-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rtnet-users
