8 Apr
2005
8 Apr
'05
7:55 p.m.
On Fri, 2005-04-08 at 16:25, Fons Adriaensen wrote:
On Fri, Apr 08, 2005 at 11:04:29AM -0500, Jan Depner
wrote:
That's about the time frame that we started using them. Most
everything now is time tagged at the sensor so it's much less of a
problem than it used to be.
Jan
IIRC part of it was servicing IRIG-B interrupts.
The easiest way to input IRIG-B is as an audio signal via a
soundcard, and use a software decoder. That was one my first
jobs when I joined Alcatel Space more than 10 years ago :-)
We are still using that code -- it takes less than 0.1% of
available CPU on today's systems, and provides sub-microsecond
accuracy.