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Discussion of precise voltage measurement

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Valhalla Model 2703 AC Voltage Standard

CQ
Chris Quayle
Tue, Sep 12, 2023 5:40 PM

Hi,

Recently brought home the above item for the lab. Clean inside and
powers up, but doesn't exit post and stops with the message:

Bad Data

Suspected bad eeproms, so replaced those with the same result.

Found the user manual, but just a page of service info. Anyone have
a service manual for this, or even the required sequence to reset
everything to manufacturers defaults ?. Has the ieee option and can
access that if required, but nothing relevant in the published remote
command set...

Thanks,

Chris

Hi, Recently brought home the above item for the lab. Clean inside and powers up, but doesn't exit post and stops with the message: Bad Data Suspected bad eeproms, so replaced those with the same result. Found the user manual, but just a page of service info. Anyone have a service manual for this, or even the required sequence to reset everything to manufacturers defaults ?. Has the ieee option and can access that if required, but nothing relevant in the published remote command set... Thanks, Chris
DM
Dave McGuire
Tue, Sep 12, 2023 5:44 PM

On 9/12/23 13:40, Chris Quayle wrote:

Recently brought home the above item for the lab. Clean inside and
powers up, but doesn't exit post and stops with the message:

Bad Data

Suspected bad eeproms, so replaced those with the same result.

Found the user manual, but just a page of service info. Anyone have
a service manual for this, or even the required sequence to reset
everything to manufacturers defaults ?. Has the ieee option and can
access that if required, but nothing relevant in the published remote
command set...

I've eyed those up occasionally; I hope to find one someday.  I have
the maintenance and calibration "manual", all of seven pages.  Let me
know if you want me to send you a copy.

        -Dave

--
Dave McGuire
McGuire Scientific Services, LLC
New Kensington, PA

On 9/12/23 13:40, Chris Quayle wrote: > Recently brought home the above item for the lab. Clean inside and > powers up, but doesn't exit post and stops with the message: > > Bad Data > > Suspected bad eeproms, so replaced those with the same result. > > Found the user manual, but just a page of service info. Anyone have > a service manual for this, or even the required sequence to reset > everything to manufacturers defaults ?. Has the ieee option and can > access that if required, but nothing relevant in the published remote > command set... I've eyed those up occasionally; I hope to find one someday. I have the maintenance and calibration "manual", all of seven pages. Let me know if you want me to send you a copy. -Dave -- Dave McGuire McGuire Scientific Services, LLC New Kensington, PA
CQ
Chris Quayle
Wed, Sep 13, 2023 3:59 PM

On 9/12/23 13:40, Dave McGuire  wrote:

I've eyed those up occasionally; I hope to find one someday.  I have
the maintenance and calibration "manual", all of seven pages.  Let me
know if you want me to send you a copy.

     -Dave

Dave,

Thanks a lot. If you have it in pdf, you can email to:

chris at tridac.net

or, let me know how much to post to the uk and
will paypal. Let me know if I can help with
anything from Sunny old England.

It's a neat unit and worth fixing. Came from
a tech scrap recovery company, via the usual site.
Pretty much undamaged other than one of the front
plastic handles has sheared off. Probably dropped
on to it. Iirc, it's 6809, so push come to shove,
can disassemble that to see what other goodies
are hidden within...

Regards,

Chris

On 9/12/23 13:40, Dave McGuire wrote: > I've eyed those up occasionally; I hope to find one someday. I have > the maintenance and calibration "manual", all of seven pages. Let me > know if you want me to send you a copy. > > -Dave Dave, Thanks a lot. If you have it in pdf, you can email to: chris at tridac.net or, let me know how much to post to the uk and will paypal. Let me know if I can help with anything from Sunny old England. It's a neat unit and worth fixing. Came from a tech scrap recovery company, via the usual site. Pretty much undamaged other than one of the front plastic handles has sheared off. Probably dropped on to it. Iirc, it's 6809, so push come to shove, can disassemble that to see what other goodies are hidden within... Regards, Chris
DM
Dave McGuire
Wed, Sep 13, 2023 4:57 PM

On 9/13/23 11:59, Chris Quayle wrote:

I've eyed those up occasionally; I hope to find one someday.  I have
the maintenance and calibration "manual", all of seven pages.  Let me
know if you want me to send you a copy.

Thanks a lot. If you have it in pdf, you can email to:

chris at tridac.net

File emailed.

or, let me know how much to post to the uk and
will paypal. Let me know if I can help with
anything from Sunny old England.

I will keep it in mind, thanks!

It's a neat unit and worth fixing. Came from
a tech scrap recovery company, via the usual site.
Pretty much undamaged other than one of the front
plastic handles has sheared off. Probably dropped
on to it. Iirc, it's 6809, so push come to shove,
can disassemble that to see what other goodies
are hidden within...

It's sad to hear when good equipment gets trashed.  I hope you're
able to resurrect it.  Good luck.

        -Dave

--
Dave McGuire
McGuire Scientific Services, LLC
New Kensington, PA

On 9/13/23 11:59, Chris Quayle wrote: >> I've eyed those up occasionally; I hope to find one someday.  I have >> the maintenance and calibration "manual", all of seven pages.  Let me >> know if you want me to send you a copy. > > Thanks a lot. If you have it in pdf, you can email to: > > chris at tridac.net File emailed. > or, let me know how much to post to the uk and > will paypal. Let me know if I can help with > anything from Sunny old England. I will keep it in mind, thanks! > It's a neat unit and worth fixing. Came from > a tech scrap recovery company, via the usual site. > Pretty much undamaged other than one of the front > plastic handles has sheared off. Probably dropped > on to it. Iirc, it's 6809, so push come to shove, > can disassemble that to see what other goodies > are hidden within... It's sad to hear when good equipment gets trashed. I hope you're able to resurrect it. Good luck. -Dave -- Dave McGuire McGuire Scientific Services, LLC New Kensington, PA