[time-nuts] T-Bolts object to being dropped.....
lists at ozindfw.net
Sat Jan 8 14:31:31 UTC 2011
My first order guess would be something like the crystal support wires
annealing after the shock. Second would be contaminants knocked loose
onto the crystal changing it's mass, and thus operating frequency and
"boiling" back off with some operating time (or maybe just standby
time.) Third would be that the crystal slid a fraction of a thou or so
in it's mounts and needed to seal the connection with a little
operation. All gross speculation, of course.
On 1/8/2011 8:21 AM, Raj wrote:
> I wonder what could have caused this? Other than the xtals, what could be shock sensitive I wonder!
> At 08-01-2011, you wrote:
>> Hello, Time Nutters....
>> Last week I was rearranging gear
>> on a shelf over my workbench. I managed
>> to knock my T-bolt off the shelf and onto
>> the top of the workbench, about a 20-inch
>> fall. After I finished calling myself a
>> $#@$%&*#@ idiot, I hooked it back up and,
>> just as I feared, there was a "BAD OSCILLATOR"
>> warning and something about an "OSCILLATOR
>> AGE" warning. There was no oscillator
>> output. AAAARRRRggghhhh....
>> Taking it apart to see what I could find, I
>> noted that the OCXO WAS running, but apparently
>> so far off that no lock occurred.
>> Thinking I had nothing to lose, I considered
>> removing the access screw over the oscillator
>> tweaking adjustment and seeing if I could
>> resurrect it, but decided I had done enough
>> damage for the day and went back into the house
>> whimpering over the demise of my T-bolt.
>> However, the next day, it had recovered all on its
>> own, at least enough that there was normal
>> output, although the steering voltage was nearly
>> at its limit. Over the following week, it
>> slowly recovered and appears now to be back to
>> normal with all parameters right where they
>> used to be. No permanent damage seems to have
>> been done....
>> Mike Baker
mailto:oz at ozindfw.net
Southlake, TX 76092 (Near DFW Airport)
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