[time-nuts] Poor Man's IRIG-B Generator?

[Jason Rabel]

Hi Dean,

Yep, I kind of put 2 & 2 together from an earlier post (I'm working my way
through all my emails this morning) and found the tg.c file in the ntp
distribution. Have not compiled it yet (about 1/2 way through all my
messages).

I would be interested in your modified tg.c, please by all means email it to
me!

I do not need it to be super accurate output, I was just wanting it to drive
a time display (Kode/Odetics 375-642). Which for that matter, does anyone
have any info on that unit, I noticed some jumpers inside but have no clue
what they do.

Also I noticed Scott replied too with the link, thanks again for all the
help and replies guys. :)

Jason


> Hi there,
> 
> The "standard" source package for the Network Time Protocol package,
> found either at http://www.ntp.org or through download with/for a LINUX
> distribution, has a tool in the "utils" directory called "tg", which
> stands for "tone generator".  It can generate simple modulated IRIG-B
> and WWV(H) time signals on an audio card.  Unfortunately, I found that
> it would not compile for X86 - it was apparently written for the
> SparcStation, I think.  I've modified it to work with Open Sound System
> (a modern LINUX sound system), and added all kinds of IRIG options,
> including IEEE 1344 yes/no, daylight savings time, proper second-of-day,
> 1998 or 2002 format (includes years), etc.  I also tweaked the WWV(H)
> format to make it more correct, e.g. skipping the 440 Hz tone on the
> 29th second, etc.
> 
> Unfortunately, I haven't got around to contributing the source back
> yet.  Looking just now, it's not obvious **how** to contribute back. 
> I'll check that out later.
> 
> In spite of this... should you be running LINUX, and should you wish to
> download NTP (you have to have NTP source before you can compile "tg" -
> may even have to have the core software compiled), I can provide a file
> "tg.c" which will drop right on top of the existing "tg.c" in the
> "utils" directory, and give you these features.  Just drop me a line. 
> As always, your mileage might vary, no warranties, etc.