Re: [time-nuts] 74HCT9046A Max. Operating Frequency

2014-04-30 Thread Magnus Danielson
Alex, You should direct your comments to Samuel that is doing a design. I know very well about keeping the comparator frequency high, and that the 9045 may not be the ideal comparator. Cheers, Magnus On 04/30/2014 02:53 AM, Alexander Pummer wrote: Hi Magnus if you do not need to use the

Re: [time-nuts] Z3816 Oscillator Saga

2014-04-30 Thread Jason Rabel
Chris, You will have to do a little google searching, or even contact MTI directly, but the suffixes in the part #'s can mean anything and without the correct spec sheet you have no idea what the EFC range is, or even the direction. There is no rhyme or reason to the suffix numbers (that I can

Re: [time-nuts] Linux TSC clocksource on multi-core systems

2014-04-30 Thread Jason Rabel
Laszlo, Have you tried choosing between your different available clock sources and letting NTP run for a few days and log the stats? Check: /sys/devices/system/clocksource/clocksource0/ available_clocksource current_clocksource ___ time-nuts

Re: [time-nuts] 74HCT9046A Max. Operating Frequency

2014-04-30 Thread Daniel Mendes
Em 30/04/2014 13:38, Magnus Danielson escreveu: Alex, You should direct your comments to Samuel that is doing a design. He replied to me because I also asked a question about the 74HCT9046A. I know very well about keeping the comparator frequency high, and that the 9045 may not be the

Re: [time-nuts] Phase noise and geomagnetism

2014-04-30 Thread iov...@inwind.it
Hi all,thanks for your replies.Geomagnetic storms are known to produce easily detectable effects at earth, sometimes dramatic ( http://en.wikipedia.org/wiki/Solar_storm_of_1859 , http://www.youtube.com/watch?v=7ukQhycKOFw ), sometimes serious (compasses get crazy), sometimes minor (only

Re: [time-nuts] 74HCT9046A Max. Operating Frequency

2014-04-30 Thread Magnus Danielson
On 05/01/2014 12:10 AM, Daniel Mendes wrote: Em 30/04/2014 13:38, Magnus Danielson escreveu: Alex, You should direct your comments to Samuel that is doing a design. He replied to me because I also asked a question about the 74HCT9046A. Ah, yes. Memory is good when you have it. I know

Re: [time-nuts] Z3816 Oscillator Saga

2014-04-30 Thread Tom Van Baak
Hi Chris, Ideally, I would like to find another Z3816, as this would provide a spare as well as visual id of damaged parts to allow repair, but haven't seen any for sale recently. Start with http://leapsecond.com/museum/z3816a/ Maybe also: http://leapsecond.com/museum/z3815a/ I have