Re: [ntp:questions] How do I validate my PPS clocks?

2013-02-25 Thread unruh
On 2013-02-26, rama...@gmail.com wrote: > On Tuesday, February 26, 2013 6:32:53 AM UTC+10, unruh wrote: >> When I ran a test many years ago I used a program to put out a rising >> >> pulse onto one of the printer port output pins, and then connected that >> >> to the parallel port nack pin. I ti

Re: [ntp:questions] How do I validate my PPS clocks?

2013-02-25 Thread ramadog
On Tuesday, February 26, 2013 6:32:53 AM UTC+10, unruh wrote: > When I ran a test many years ago I used a program to put out a rising > > pulse onto one of the printer port output pins, and then connected that > > to the parallel port nack pin. I timestamped the time just before I put > > out th

Re: [ntp:questions] PPS only configuration

2013-02-25 Thread Richard B. Gilbert
On 2/20/2013 5:00 PM, E-Mail Sent to this address will be added to the BlackLists wrote: On 2/20/2013 12:17 PM, Richard B. Gilbert wrote: The Thunderbird Mail Client does NOT automagically insert line breaks when the sender has failed to do so. Fortunately, almost everyone limits their line len

Re: [ntp:questions] How do I validate my PPS clocks?

2013-02-25 Thread unruh
On 2013-02-25, Miroslav Lichvar wrote: > On Mon, Feb 25, 2013 at 01:44:02PM +0100, Kasper Pedersen wrote: >> From the PPS arrives, and to the kernel timestamps it, is a very long time. >> I wrote this to measure it: >> http://n1.taur.dk/edgetest.c >> (you will need a linux machine, gcc, and kerne

Re: [ntp:questions] How do I validate my PPS clocks?

2013-02-25 Thread Miroslav Lichvar
On Mon, Feb 25, 2013 at 01:44:02PM +0100, Kasper Pedersen wrote: > From the PPS arrives, and to the kernel timestamps it, is a very long time. > I wrote this to measure it: > http://n1.taur.dk/edgetest.c > (you will need a linux machine, gcc, and kernel-headers to compile) Very interesting, thank

Re: [ntp:questions] How do I validate my PPS clocks?

2013-02-25 Thread Kasper Pedersen
On 02/25/2013 12:11 AM, bodo...@gmail.com wrote: > I can't find or figure out how to validate my ntp results. > > I (currently) have two Linux boxes with PPS via the NMEA driver from > Garmins (18 & 18x) and a Sure board connected to a purpose built > NTP server. When I set up my first Garmin all

Re: [ntp:questions] How do I validate my PPS clocks?

2013-02-25 Thread David Taylor
On 24/02/2013 23:11, bodo...@gmail.com wrote: I can't find or figure out how to validate my ntp results. I (currently) have two Linux boxes with PPS via the NMEA driver from Garmins (18 & 18x) and a Sure board connected to a purpose built NTP server. When I set up my first Garmin all of my remo