paul swed wrote:
Sorry no idea.
It will however be offset from time if your source encodes rs232 and then
you decode it...
Easy way for everyone with a short wave receiver and scope would be to
measure the tick on 1 channel and if I recall the pulse out or you can also
look for the IRIGB leading data. As I recall its fixed and you can see it as
a pattern
But adding a server and etc I am sure its close to 1 second.
Just did not have a need to get that detailed.
I run gps connected to a pic that drives a home brew irigb gen and that
drives numbers of decoders.
The pic does several things. It extracts the time from gps and then
calculates the proper time to acount for the irigb encoder delay.
Essentially I output the next second ahead of 0 time.
Liked all of this pretty well and did essentially the same trick with a
smpte tc generator using jam sync. Works very well. I jam every 10 minutes
so that its always on time. If power fails I jam as soon as things are
stable within 10 seconds.
Are the PIC and irigb encoder written up any place. I have a couple of
GPS receivers and
an irig display and I would like to connect them. Been meaning to build
an irig encoder myself.
Bill K7NOM
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