[time-nuts] 5680A update

EWKehren at aol.com EWKehren at aol.com
Tue Jan 17 11:38:56 EST 2012


I am using a fan that holds it within .1 C Its been month since I measured  
it but I did report it here and I think it is 42.7C.
Bert Kehren
 
 
In a message dated 1/17/2012 11:30:07 A.M. Eastern Standard Time,  
n4ua.va at gmail.com writes:

Bert,

Since you have been running your unit for a long time,  what temperature are
you holding your 5680 to? I suppose more to the point,  I attached my unit
to a 1/2" think aluminum plate slightly larger than the  5680 footprint, and
that in turn is attached to a painted surface of a  cabinet (no effort to
achieve max temp transfer there). The top (hidden  mounting screw) of my
unit stabilizes at 140 F. It locks up just fine, but  sometimes, after
several hours, it will unlock and fail to re-lock. I was  wondering if I
need to drop the temperature.

geo

On Tue, Jan  17, 2012 at 11:13 AM, <EWKehren at aol.com> wrote:

> After eight  weeks of monitoring to 1 E-12, I still se no aging. Waiting 
for
>   a change so I can do other tests. One thing I clearly se is a 4 Hz  
filter
> response changing the output by +- 3 E-11. It may be more, will  have to
> find a  way to check it more accurately, because of  limited response 
time.
> I
> for one  will fix that problem  with a Morion MV 89 and a 100 Hz analog
> filter.
> New   Morion's are available for less than $ 30 the ones I bought seem 
new.
>  That's  also where I got my 5680A
> Have no contact with the  seller.
> Bert Kehren
>  _______________________________________________
> time-nuts mailing list  -- time-nuts at febo.com
> To unsubscribe, go to
>  https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the  instructions  there.
>
_______________________________________________
time-nuts  mailing list -- time-nuts at febo.com
To unsubscribe, go to  
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the  instructions there.




More information about the time-nuts mailing list