A drift post-compensation in Stable32 for instance may work, but loose the first heat-up part as it will confuse the estimator. Anyway, for this reason I have a couple of oscillator heated on the labbench so that they are ready when I need to play with them.

I'm trying to estimate the uncertainty of GPS Common View data (which is based on TIE measurement) and compare it to data from dual mixer method.

With this, it is trivial to convert it into time by dividing by speed of light c and by subtracting the reported pseudorange after converting it to time (divide by 16*1023*1000) you have an estimate of the time-range, so it only remains to round it up to ms. Once this is done, it is trivial to update it using the wrapping of 16*1023 that the 0x5A provides.

Estimate $100+ (Do an original email please) If one can find a better deal, please but it and inform the list so we all can be envious.  Like the guys who got WWII surplus jeeps for $50 in long past times. Regards, Perrier

If you use Linear Regretion / Least Square frequency estimation methods, it will be easy to be conclusive. The counter/oscilloscope setup would work. You could even record the Lissajou pattern shift ever so slowly.

So the current estimate of 13 is towards the high end and variation is large enough that 40 years with might be sufficiently low that only 1 rollover is assumed. Not likely to overflow the leap second count early either.

That does not matter here because I used these plots only for locating the resonances and not for the crystal estimator. The Auswahl_005.png plot has some of the experimenting history. Cheers, Gerhard

If not, you are informed and an estimate of repairs is made. If repair is refused, you pay 'half price' for the failed attempt at calibration and the meter is returned. If you agree to repair, you pay only the 'Repair Per Incident' charge of $2363.56 which includes the 'Agilent Calibration Per Incident' calibration.

Is there a way to estimate the leackage for such a cable? Reading a stable Voltage source with and without a series resistance? Fabio.

returned to me that is more accurately calibrated than if I take the trouble to preserve the SRAM contents. 3) The adjustments are I believe software, so there's no risk that adjusting potentiometers will cause drift to increase. 4) I don't have any historical data from cal certificates, so even if I a range is in error by 0.5%, I can't make any attempt to estimate