My rough estimate is that the accuracy of NTP is typically not better than about 5% of the round-trip delay. >> >> Judah Levine >> >> >> On 7/20/2015 3:27 PM, Mike Cook wrote: >>> Thanks Judah, >>> >>> >>>> Le 20 juil. 2015 à 17:25, Judah Levine > a écrit : >>>> >>>> >>>> Hello, >>>> Your

The prices vary a bit, depending on where you live, but usually using 2*(BOM cost) and/or (BOM Cost)+300 are good estimates for how much it will cost to build a PCB. "Going east" might also be a good strategy.

Well, ADEV is a method to estimate noise amplitudes using counters, simply because at the time, phase noise systems simply did not have enough frequency resolution to be useful for atomic clocks. The definition gives the relationship between the noise level and the ADEV value for that particular noise-type.

I would estimate from >> your graph that the jitter in offset is about 1 millisecond peak-to-peak, >> but it seems that I get less than that - perhaps 100 microseconds >> peak-to-peak with occasional excursions outside that.

Is there any way to measure/estimate the resistance in the shared path between heater GND and EFC GND? (I've done my best to directly refer the filter and the ADC to the GND pin of the oscillator to reduce this effect on the external path). - how to properly do outlier removal in a mobile platform which may get bumped (leading to OCXO jumps).

Enrico presented an approach to estimate the removed noise and simply add it back. Mike Driscoll discussed the potential of doing a different approach with mixers for higher amplitude level.

Estimating what WWVB is doing over long baselines as the weather changes is not at all easy. To keep things in sync you need solid data all the time. Guessing at your time source and then trying to discipline against it does not make for a rational disciplining system. Again … I spent a lot of years looking at those phase plots.

The pertinent portion of the ordinance is below: (3) (a) All supplies, materials, equipment and contractual services, except as otherwise provided herein, when the estimated costs thereof shall exceed $25,000, shall be purchased by formal written contract from the lowest and best bidder, after due notice inviting bid Should this RFP be rebid?

There are differences in distance estimation and depth perception. From a practical, operational perspective by the time you get red light bright enough to make a difference in perception you've lost dark adaptation. The US military has mostly shifted from red light to highly dimmable white. So what does that mean to us?

This would be necessary, anyway, to estimate the expected cell life. A current rise resembling a a diode turn-on knee would serve to establish the limit. I wouldn't ever let it rise above 1 mA or so. Some varactors have MAX forward currents in the 10s of mA range.