thanks
Am 24.04.2013 13:22, schrieb Bob Camp:
Hi
At least on the 53131, the first sign of wear out was an error message. I
believe it was a self test message (checksum error). I could easily be wrong
about that. We blew them out within 9 months of when they were first
introduced. That was a long time ago.
Bob
On Apr 24, 2013, at 3:43 AM, Volker Esper<[email protected]> wrote:
How do I recognize a wear out? Does the receiver send an error message every
time I try to change the NVRAM or do I have to ask it?
Volker
Am 24.04.2013 00:08, schrieb Mark C. Stephens:
Thanks Ulrich, Much Appreciated, prefer to use your software.
Thanks Again,
mark
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf
Of Ulrich Bangert
Sent: Tuesday, 23 April 2013 5:36 PM
To: Time nuts
Subject: [time-nuts] Z38XX
Gentlemen,
due to the discussion that evolved concerning Z38XX i looked up the sources and
found that indeed every time the current time is read using a
:PTIM:TCOD?
a
:PTIM:TCOD:FORM F2
is sent in advance to make the receiver answer in the format that Z38XX needs.
I have not been aware that this could lead to NVRAM wear out but have been
thinking this simply sets the format of the next output. I have changed the
software so that the FORM F2 command is now only written once after program
start. The software can be downloaded from the usual place but I have currently
no time to test it.
My own experiences with NV memory that can only be written for a limited number
of times (EEPROM on ATMEL processors) indicates that a clever made NV writing
routine would first compare the NV contents to what shall be written on a byte
by byte base and write only changed bytes.
Best regards
Ulrich Bangert
www.ulrich-bangert.de
Ortholzer Weg 1
27243 Gross Ippener
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