[volt-nuts] Fwd: Solartron 7150plus - Chasing AC gremlins

[Philip Pemberton]

Also, I should mention that the Calibration Refresh procedure succeeds.

I'd expect that if the EAROM had failed or become marginal, the 
Calibration Refresh would fail (as I recall, the manual says something to 
this effect though I don't have mine here to check).

Thanks,
Phil.

On Fri, 7 Dec 2012, Rob Klein wrote:

> As per Philip's original post, _all_ AC ranges drop gradually. This is really 
> not consistent with a faulty
> EAROM.
>
> Rob.
>
> Op 7-12-2012 13:19, Wim de Jong schreef:
>> Dave,
>> 
>> Thats the question. It depends on the quality of the cells where the AC 
>> calibration info is stored.
>> I'm not aware of a checksum function on these EAROM's.
>> 
>> If it is the AC part, I've some spare parts if necessary... Just let me 
>> know.
>> 
>> Kind regards, Wim.
>> 
>> Wim de Jong
>> wim.de.jong.59 at solcon.nl
>> 
>> Op 7-12-2012 10:25, David C. Partridge schreef:
>>> Wim
>>> 
>>> I don't think that is likely, as Phil clearly says that all the DC ranges 
>>> are correct,  it is just the AC ranges that are a problem.  If the EAROMs 
>>> were bad, you'd lose all the calibration constants.
>>> 
>>> Dave
>>> -----Original Message-----
>>> From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On 
>>> Behalf Of Wim de Jong
>>> Sent: 07 December 2012 08:04
>>> To: volt-nuts at febo.com
>>> Subject: [volt-nuts] Fwd: Solartron 7150plus - Chasing AC gremlins
>>> 
>>> Phil,
>>> I suspect it to be the EAROM(s) IC 105/6 of this meter. Losing its 
>>> calibration constants.
>>> Regards, Wim.
>>> 
>>> Wim de Jong
>>> wim.de.jong.59 at solcon.nl
>>> 
>>> 
>>> _______________________________________________
>>> volt-nuts mailing list -- volt-nuts at febo.com
>>> To unsubscribe, go to 
>>> https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
>>> and follow the instructions there.
>>> 
>> 
>> _______________________________________________
>> volt-nuts mailing list -- volt-nuts at febo.com
>> To unsubscribe, go to 
>> https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
>> and follow the instructions there.
>> 
>
> _______________________________________________
> volt-nuts mailing list -- volt-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
> and follow the instructions there.
>

-- 
Phil.
philpem at philpem.me.uk
http://www.philpem.me.uk/