Re: [ntp:questions] CHU gadget box files
On Dec 6, 3:31 pm, jimmyterrence wrote: > On a related note, is there anyone using the gadget box, or are you > just using CHU audio drivers? I was wondering if it would be possible > to build just the PPS part of the circuitry and use a generic PPS > driver with the CHU AUDIO driver. Some folks like to tinker with (and I have myself done so) a PPS source from one refclock, and a serial stream from a second refclock under development, as this lets you get a handle on latency etc. This is how I measured the audio driver latency and jitter using different tweaks. I think this is a fine cross check. I didn't actually build "the gadget box" but I just strung together a LS123, a blinky LED, and a MAX232 in a nearly identical configuration. Other folks use far cruder TTL to EIA converters (e.g. a diode and a resistor or similar, taking advantage of the bias commonly found on PC- clone serial ports.) Tim. ___ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
Re: [ntp:questions] CHU gadget box files
jimmyterrence, There is a link on www.eecis.udel.edu/~mills/resources. The PPS should work for CHU audio just like any other driver; however, that would be useful only if you have a local calibrated PPS source of sufficiently high quality and want to use CHU only to number the seconds. Dave jimmyterrence wrote: >Does anyone have a live link to the CHU gadget box files that used to >be at ftp://ftp.udel.edu/pub/ntp/gadget.tar.Z ? >I can't seem to find them anywhere else. > >On a related note, is there anyone using the gadget box, or are you >just using CHU audio drivers? I was wondering if it would be possible >to build just the PPS part of the circuitry and use a generic PPS >driver with the CHU AUDIO driver. > >Thanks, > >Court > >___ >questions mailing list >questions@lists.ntp.org >https://lists.ntp.org/mailman/listinfo/questions > > ___ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
Re: [ntp:questions] CHU gadget box files
On 2009-12-06, jimmyterrence wrote: > Does anyone have a live link to the CHU gadget box files that used to > be at ftp://ftp.udel.edu/pub/ntp/gadget.tar.Z ? > I can't seem to find them anywhere else. http://www.eecis.udel.edu/~ntp/ntp_spool/hardware/gadget.tar.Z http://archive.ntp.org/hardware/gadget.tar.Z gopher -p '/hardware/' archive.ntp.org http://www.google.com/search?q=gadget.tar.Z for more ... > On a related note, is there anyone using the gadget box, or are you > just using CHU audio drivers? I was wondering if it would be possible > to build just the PPS part of the circuitry and use a generic PPS > driver with the CHU AUDIO driver. I'm using the CHU audio driver w/ a Soekris NET4801 & TenTec RC-320D receiver (w/ Tim Shoppa's modified icom.[hc] files). -- Steve Kostecke NTP Public Services Project - http://support.ntp.org/ ___ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
[ntp:questions] CHU gadget box files
Does anyone have a live link to the CHU gadget box files that used to be at ftp://ftp.udel.edu/pub/ntp/gadget.tar.Z ? I can't seem to find them anywhere else. On a related note, is there anyone using the gadget box, or are you just using CHU audio drivers? I was wondering if it would be possible to build just the PPS part of the circuitry and use a generic PPS driver with the CHU AUDIO driver. Thanks, Court ___ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
