[time-nuts] Generating a solid PPS from 10Mhz source

2016-01-13 Thread Jerome Blaha
Hey Guys, Is there an easy circuit to build that can consistently deliver a 1 PPS from a 10MHz source with excellent resolution and repeatability? My first application is to test different 10MHz oscillators without a TIC always attached and then compare the PPS output change over time against

Re: [time-nuts] Fixing broken HP5065A LED clock

2016-01-13 Thread Poul-Henning Kamp
In message , paul swed writes: >Poul-Henning is that just the back board of the clock? >I guess I did not realize there were actually 2 boards. There are 3 and 2 board versions of the LED clock. Mine is the 2-board

Re: [time-nuts] Generating a solid PPS from 10Mhz source

2016-01-13 Thread John Ackermann N8UR
Tom Van Baak has developed dividers based on simple PIC chips that will produce 1 PPS from several input frequencies. These dividers have remarkably low jitter, down in the couple-of-picosecond range, and are very simple. I've implemented life support circuitry around two versions of Tom's

Re: [time-nuts] Generating a solid PPS from 10Mhz source

2016-01-13 Thread Edesio Costa e Silva
Hi! Try TVB's picDiv at http://www.leapsecond.com/pic/picdiv.htm Edésio On Wed, Jan 13, 2016 at 09:22:09AM +, Jerome Blaha wrote: > Hey Guys, > > Is there an easy circuit to build that can consistently deliver a 1 PPS from > a 10MHz source with excellent resolution and repeatability? My

Re: [time-nuts] Generating a solid PPS from 10Mhz source

2016-01-13 Thread Ole Petter Ronningen
Sounds like a PICDIV is just about right: http://www.leapsecond.com/pic/picdiv.htm Ole On Wed, Jan 13, 2016 at 10:22 AM, Jerome Blaha wrote: > Hey Guys, > > Is there an easy circuit to build that can consistently deliver a 1 PPS > from a 10MHz source with excellent

Re: [time-nuts] Lady Heather Server On Raspberry Pi 2 Model B?

2016-01-13 Thread Chris Caudle
On Wed, January 13, 2016 8:30 am, Nick Sayer wrote: >> No, ntpd would be getting time from the serial port, not from the >> network socket. > > You're right. I may be wrong, but I would expect that either gapd or > ser2net would want to open the serial device exclusively, which would > spoil

Re: [time-nuts] Generating a solid PPS from 10Mhz source

2016-01-13 Thread Nick Sayer via time-nuts
Just shy of a half dozen folks have asked, so I'll post here as soon as I finish cleaning it up. I'll put it on Github when it's ready. I just need a day or two. Sent from my iPhone > On Jan 13, 2016, at 6:43 AM, Nick Sayer via time-nuts > wrote: > > If anyone is

Re: [time-nuts] Tait reference

2016-01-13 Thread Adrian Godwin
Good news - my purchase arrived quickly, contains an FE5660A 10MHz oscillator and shows both the internal standard lock light and the internal reference lock light within a few minutes. It runs from 13.8 volts and takes about 1.2A. The f1 and f2 lock lights don't come on, but that's not a big

Re: [time-nuts] Lady Heather Server On Raspberry Pi 2 Model B?

2016-01-13 Thread Nick Sayer via time-nuts
> On Jan 12, 2016, at 4:20 PM, Chris Caudle wrote: > >>> On Jan 12, 2016, at 7:17 AM, Chris Caudle wrote: >>> Can ntpd using a Thunderbolt as a time source run cooperatively with LH >>> accessing the same Thunderbolt over ser2net? That seems like

Re: [time-nuts] Generating a solid PPS from 10Mhz source

2016-01-13 Thread Nick Sayer via time-nuts
If anyone is interested in the equivalent functionality using an ATTiny25 (for instance, if you’re already heavily invested in AVR instead of PIC, like I am), ping me. I’ve privately written code to solve almost the same problem and it could easily be adapted into doing the same job. > On Jan