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Posts Tagged ‘Rubidium standard’

Datum/Symmetricom 8040 Rubidium frequency standard teardown

Tuesday, March 7th, 2017

Teardown: A look at the Datum/Symmetricom 8040 Rubidium frequency standard The 8040 used an LPRO 101 (low profile Rubidium oscillator) oscillator. Interestingly, there is a note written on the top of the LPRO case: “vibration test may have magnetized cover”. As you may know, Rubidium standards’s accuracy is very sensitive...

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Posted in Teardowns | No Comments »

Rubidium frequency standard enclosure

Wednesday, December 5th, 2012

Kenneth builds an enclosure and power supply for a "cheap" rubidium frequency standard. Rubidium standards are used for high precision clocks, and time keeping with a drift of only 6ms a year. Normally, rubidium standards are very expensive, but it is possible to find these modules on eBay for $50-$100...

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Posted in DIY, hacks | 7 Comments »

Recent Comments

  • Pekka Akselin: This is ridiculous!? :-) We are back at 256(!) byte EPROMs that needed multiple, a handful, of voltages to run! :-(
  • KH: Let's try a back-of-envelope calc balancing energies. From MCP1700 datasheet, there are graphs for a 200mA load step. Estimate the energy shortfall as 12uJ. Say...
  • Daniel: It's been a week and my comment is still awaiting moderation. Apparently the CIA doesn't want their involvement known?
  • KH: Agree, so okay, I guess he must have learned from somewhere. 100nF and 1000uF is so far apart, that was jarring; it's more magic incantation...
  • Max: I have a suspicion the hefty electrolytic cap might be some sort of cargo cult carry-over from other RF-based projects - for instance, I've seen...