[Gb-ccb] forwarded message from John Ford
Tim Pearson
tjp at astro.caltech.edu
Wed Jan 21 16:53:46 EST 2004
On Wed, 21 Jan 2004, Martin Shepherd wrote:
> This brings up a dump-mode issue that I hadn't thought about yet.
> Whereas the time-stamps of the 1ms integrations didn't need to be any
> more accurate than about 0.5ms, dump-mode samples will presumably need
> much more precise timestamps. So yes, your point about using a 10MHz
> signal synchronized to 1PPS may be important.
I do not think that accurate time-stamping of the dump data is a
requirement. An approximate time (better than 1s) of the start or end
of the dump is all that is needed, assuming the sequence of samples is
really a continuous one. Higher accuracy would be nice, but not
necessary. This is for diagnostics, not pulsar timing.
- Tim
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