[comp.sys.atari.st.tech] Mega ST Real Time Clocks

ralph@laas.fr (Ralph P. Sobek) (12/04/90)

What's the accuracy of the real-time clocks that come with Mega STs?
I've noticed that on mine I'm losing a second a day.  Is this within
specs?  The batteries are fresh.

The real-time clock (ZTime) that I had on my old 1040 ST seemed more
accurate than that.

Any comments?

Maybe my computer is way too fast approaching Einsteinien limits in
its calculations. :-)

--
Ralph P. Sobek			  Disclaimer: The above ruminations are my own.
ralph@laas.fr				   Addresses are ordered by importance.
ralph@laas.uucp, or ...!uunet!laas!ralph		
If all else fails, try:				      sobek@eclair.Berkeley.EDU
===============================================================================
Proud new owner of a Mega 4 ST.

wallace@ynotme.enet.dec.com (Ray Wallace) (12/04/90)

In article <RALPH.90Dec3175249@orion.laas.fr>, ralph@laas.fr (Ralph P. Sobek) writes...
>What's the accuracy of the real-time clocks that come with Mega STs?
>I've noticed that on mine I'm losing a second a day.  Is this within
FYI - My Mega clock looses time as well. I wonder if there is an adjustment
for it like ICD has?
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Ray Wallace		
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ralph@laas.fr (Ralph P. Sobek) (12/14/90)

I am reposting the following question since I haven't received a
single reply.  Maybe the original never got out.

In article <RALPH.90Dec3175249@orion.laas.fr> I wrote:

|  What's the accuracy of the real-time clocks that come with Mega STs?
|  I've noticed that on mine I'm losing a second a day.  Is this within
|  specs?  The batteries are fresh.

Even rebooting causes an additional loss of a couple of seconds.

|  The real-time clock (ZTime) that I had on my old 1040 ST seemed more
|  accurate than that.
| 
|  Any comments?
| 
|  Maybe my computer is way too fast approaching Einsteinien limits in
|  its calculations. :-)

Anything I can do to get more accuracy?

--
Ralph P. Sobek			  Disclaimer: The above ruminations are my own.
ralph@laas.fr				   Addresses are ordered by importance.
ralph@laas.uucp, or ...!uunet!laas!ralph		
If all else fails, try:				      sobek@eclair.Berkeley.EDU
===============================================================================
Proud new owner of a Mega 4 ST.  What should I do with my SH204 drive?

wallace@oldtmr.enet.dec.com (Ray Wallace) (12/15/90)

In article <RALPH.90Dec13174008@orion.laas.fr>, ralph@laas.fr (Ralph P. Sobek) writes...
>I am reposting the following question since I haven't received a
>single reply.  Maybe the original never got out.
I posted a follow up to your original, stating that I had a similiar problem
with my Mega clock loosing time.

>|  What's the accuracy of the real-time clocks that come with Mega STs?
I don't know, but when I opened up my Mega this weekend I found that there is
an adjustment for the clock 'speed'. It is small potentiometer right near the
clock chip. I turned it clockwise a 1/16 of a turn. I don't know yet what
affect, if any, it had on it.

>Even rebooting causes an additional loss of a couple of seconds.
Woa, are you sure you don't have a time setting program in your auto folder,
or a time setting desk accessory? If you do then that is most likly what is
causing your problem (based on this re-boot comment).

>Anything I can do to get more accuracy?
Adjust the pot as above.

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Ray Wallace		
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