search for: rubidium

Displaying 4 results from an estimated 4 matches for "rubidium".

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2017 May 24
2
System Time Source
On Wed, May 24, 2017 10:45 am, Warren Young wrote: > On May 24, 2017, at 8:52 AM, Chris Adams <linux at cmadams.net> wrote: >> >> Once upon a time, Warren Young <warren at etr-usa.com> said: >>> a. It???s transmitting from a fixed location in a time zone you >>> probably aren???t in ??? US Mountain ??? being the least populous of >>> the lower
2017 May 25
0
System Time Source
...%2FProduct_Docs%2FGPS_Antennas_ApplicationNote%28GPS-X-08014%29.pdf I'm running an NTP setup here with our secondary being a CentOS box using an Agilent Z3816 GPS-disciplined OCXO with timecode and 1PPS outputs. Our primary is a Datum/Symmetricom SSU2000 modular system with a cesium PRS, a rubidium stratum 2E secondary clock, and an OCXO stratum 3E tertiary clock. The cesium PRS is down at the moment, but the rubudium is close enough for current work. The CentOS box runs very well for this purpose, and the interface wasn't too difficult. I have not implemented the 1PPS discipline fo...
2017 May 24
11
System Time Source
One of our STEM interns recently observed that there are inexpensive clocks that sync via radio to standard time services.? This begged a question about why every computer would not have a radio module to receive time.? Our senior staff did not have a good answer or if time from such a radio module would be supported by the operating system. When I was a student, such questions would have earned
2006 Nov 24
19
Time/clock issues with Xen 3.0.3?
The time appears to be perfect inside dom0, however all the domU''s tend to have a slightly faster date which gets further out of sync every day. I''m currently using Xen 3.0.3 with Gentoo Linux, under 3.0.2 I had no problems with domU clocks. Are there any known issues which could cause this? I''d strongly prefer not to run ntpd in every domU, having all domU clocks in