[time-nuts] 10811 crystal orientation

[Jim Palfreyman]

All,

Can you please follow John's instructions and stay on topic.

All this new age pseudo-science talk of "crystal orientations" and "g
sensitivity" does not belong in this group.

Thank you.

Jim


2009/7/9 Robert Atkinson <robert8rpi at yahoo.co.uk>

>
> Hi Antonio,
> Have a look at http://www.realhamradio.com/GPS-oven-journey.htm for
> internal pictures.
> The crystal element is a disc mounted parallel to the flat end of the can,
> see http://www.bliley.com/index_088.htm
>
> Robert G8RPI.
>
> --- On Wed, 8/7/09, iovane at inwind.it <iovane at inwind.it> wrote:
>
> > From: iovane at inwind.it <iovane at inwind.it>
> > Subject: Re: [time-nuts] 10811 crystal orientation
> > To: "time-nuts" <time-nuts at febo.com>
> > Date: Wednesday, 8 July, 2009, 7:01 PM
> > Hi Chad,
> >
> > the sketch you sent seems to indirectly answer my question,
> > as I could rely on the axis of minimum "g" sensitivity to
> > orient my three 10811 assemblies, but for my purpose it
> > seems that there is still a margin of ambiguity. I don't
> > take from the sketch how the crystal is actually fitted
> > (vertically?) into the case. As far as I know, "g"
> > sensitivity depends mainly on how the crystal "weights" on
> > its suspensions (contacts), and this is secondary for me.
> > So, I would be pleased to know how the crystal is actually
> > oriented, say regardless of the "g" sensitivity.
> >
> > Thanks.
> > Antonio I8IOV
> >
> > > Hi Antonio,
> > >
> > > Please see the attached diagram from the 10811A
> > service manual.  Minimum and
> > > maximum G-sensitivity axes are shown.  Since the
> > other variants of 10811 are
> > > all internally constructed the same, I would not
> > expect a difference for the
> > > -60111.
> > >
> > > - Chad.
> > >
> > >
> > >
> > > On Wed, Jul 8, 2009 at 10:27 AM, iovane at inwind.it
> > <iovane at inwind.it>
> > wrote:
> > >
> > > > Dear all,
> > > >
> > > > does anybody out there know the orientation of
> > the crystal faces relative
> > > > to the outer case in a 10811-60111?
> > > >
> > > > (The sense of the question is that we are
> > considering building a 3-axis
> > > > apparatus for gravity-related tests. Note, based
> > on our tentative
> > > > modelization, crystals are not requested to work
> > as accelerometers).
> > > >
> > > > Antonio I8IOV
> >
> >
> >
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>
>
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