[time-nuts] 10811 crystal orientation

John Ackermann N8UR jra at febo.com
Thu Jul 9 00:05:54 UTC 2009


I think several of us have an HP document on-line that explains at least 
a bunch of the various models.  My copy is at
http://www.febo.com/pages/hp10811/HP10811-Specs.pdf

John
----

Dave M said the following on 07/08/2009 08:02 PM:
>> 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
> 
> 
>> 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.
>>
> 
> 
> Speaking of the variants of the 10811- oscillator, does anyone know of a 
> reference that describes or compares the details and differences between 
> all the variations?
> 
> Dave M
> masondg44 at comcast dot net
> 
> I went to a bookstore and asked the saleswoman, "Where's the self-help 
> section?" She said if she told me, it would defeat the purpose.
> 
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