Didier and Bob both suggested that perhaps the Tbolt's Kalman filter is
better served by the "other corner of the board" temperature data
supplied by the existing DS1620, and was designed to operate that way.
If this were true, we would expect Tbolts with newer DS1620 chips
(chunky 1C temp dat
Magnus,
> The mf values of +3, +2, +1, -1, -2, -3 transitions have a relatively
> strong sensitivity to magnetic field, with a strong linear term on the
> magnetic field strength, where as the 0 transition has a much weaker
> quadratic sensitivity, assuming weak magnetic field which is fair
> ass
Hi,
On 2019-12-07 21:46, Anders Wallin wrote:
> In Cs my understanding is that a transition mF=0 to mF=0 transition is used
> - so it is insensitive to the magnetic field[1].
> There is no magnetic field insensitive component of the 88Sr+ clock
> transition (other optical clocks will vary!)
> See
GREAT !
Surplus ESE units (like those from 911 system upgrades) have often been
disconnected and in storage for weeks or months, before being posted on the
auction sites.
This storage time plus age of the units (10-25 years), produce dead batteries —
requiring their replacement.
As noted by M
>
> The servo-loop will
> > thus need to probe the left and right side of multiple peaks in sequence.
> > Our pulse-sequence now does 100 probe-pulses in about 7 seconds. If we
> > probe left/right side of three pars (twelve frequencies in total) the
> > line-center can be computed about once per
Luca,
Thanks for that 15 minute video. Normally we discard random youtube
links on time-nuts that simply have a word "watch" or "clock" in the
title. But the one you posted is related to Ken Shirriff
(www.righto.com) and by Marc Verdiell (CuriousMarc) of Apollo AGC fame,
so they get a pass. T
https://youtu.be/JBIhzEZkWEA
Cool old special stuff!
(room temperature xtal time base only?...)
:-)
Bye
Luca
iw2lje
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