syseng68k to PJ2:
From your original post 3640:
The key point is, parameters can't be recorded all at once. If there are
1800 parameters (in binary form) coming into the system, the system must have a way of "listening, parsing and recording". The data frame software is how that process is handled.
And then:
Without getting more complicated, (because it has to if we go any
further and everyone will be asleep), the nature of recording can give
the appearance of a 'lag', when there "may, or may not" have been one.
Which is what I was disagreeing about. A few general data logging and
comms system basics may help here, but apologies if preaching to the
choir :-).
There may be confusion here between time stamps,synchronous sampling and lower than nyquist sample rate artifacts
Even with accurate time stamps there can be artifacts such as phantom split control surfaces if the data is not sampled (and time stamped) at the same instant or at a high enough rate to allow full fidelity.
Phantom split control surfaces can be caused by the time (up to 1/2 the sampling interval) difference between A and B samples.
If a short "jog" (less or near sample interval) is sent to A and B only A might show movement with B appearing stationary.
If the data for 2 surfaces are sampled at the same instant the artifact will not happen.
Eihter both will be captured moving or the "jog" will be missed entirely.
Note though that no more "real" data will be available, if anything slightly less since sampling related data with a time offset may help in filling in the time gaps.