Empathy List Archives

G

gsteinba52@aol.com

Mon, Oct 5, 2009 3:54 AM

Hello fellow nut-cases.

What does everyone do for calibration? I recently powered an instrument (HP 3468A) and it displayed "ERROR 1" - which means the battery backed CAL RAM values are kaput. I popped the cover to discover the battery had been replaced at some time (it is putting out the required 3Vdc) but the RAM contents have probably been toast since then.

The service manual is available online from Agilent. Required calibration equipment is well beyond my meager 'home lab'? inventory. I have a couple of GR resistance standards at 0.01%, but the cal procedure calls for 0.0005%. Some of the tests require a voltmeter that has 10x the accuracy of the 3468A? AND has been calibrated to that accuracy within the previous 24hours of running the 3468A cal.

I also have a couple of Solartron 7060s (one re-branded as a WESTON 7060), a Solartron 7081 and miscellaneous toys.

So aside from selling my car to pay for NIST traceable calibration for all this equipment, what other options are there?

Best,
Jerry

p.s. The time-nuts T-bolt group buy lets me do the frequency related stuff.? Thanks TAPR!

Hello fellow nut-cases. What does everyone do for calibration? I recently powered an instrument (HP 3468A) and it displayed "ERROR 1" - which means the battery backed CAL RAM values are kaput. I popped the cover to discover the battery had been replaced at some time (it is putting out the required 3Vdc) but the RAM contents have probably been toast since then. The service manual is available online from Agilent. Required calibration equipment is well beyond my meager 'home lab'? inventory. I have a couple of GR resistance standards at 0.01%, but the cal procedure calls for 0.0005%. Some of the tests require a voltmeter that has 10x the accuracy of the 3468A? **AND** has been calibrated to that accuracy within the previous 24hours of running the 3468A cal. I also have a couple of Solartron 7060s (one re-branded as a WESTON 7060), a Solartron 7081 and miscellaneous toys. So aside from selling my car to pay for NIST traceable calibration for all this equipment, what other options are there? Best, Jerry p.s. The time-nuts T-bolt group buy lets me do the frequency related stuff.? Thanks TAPR!

JF

J. Forster

Mon, Oct 5, 2009 5:01 AM

Well, you can calibrate it to the standards you have. The resolution will
still be there, but the absolute accuracy will not.

Do you REALLY NEED the absolute accuracy?

-John

================

Hello fellow nut-cases.

What does everyone do for calibration? I recently powered an instrument
(HP 3468A) and it displayed "ERROR 1" - which means the battery backed CAL
RAM values are kaput. I popped the cover to discover the battery had been
replaced at some time (it is putting out the required 3Vdc) but the RAM
contents have probably been toast since then.

The service manual is available online from Agilent. Required calibration
equipment is well beyond my meager 'home lab'? inventory. I have a couple
of GR resistance standards at 0.01%, but the cal procedure calls for
0.0005%. Some of the tests require a voltmeter that has 10x the accuracy
of the 3468A? AND has been calibrated to that accuracy within the
previous 24hours of running the 3468A cal.

I also have a couple of Solartron 7060s (one re-branded as a WESTON 7060),
a Solartron 7081 and miscellaneous toys.

So aside from selling my car to pay for NIST traceable calibration for all
this equipment, what other options are there?

Best,
Jerry

p.s. The time-nuts T-bolt group buy lets me do the frequency related
stuff.? Thanks TAPR!

volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.

Well, you can calibrate it to the standards you have. The resolution will still be there, but the absolute accuracy will not. Do you REALLY NEED the absolute accuracy? -John ================ > Hello fellow nut-cases. > > What does everyone do for calibration? I recently powered an instrument > (HP 3468A) and it displayed "ERROR 1" - which means the battery backed CAL > RAM values are kaput. I popped the cover to discover the battery had been > replaced at some time (it is putting out the required 3Vdc) but the RAM > contents have probably been toast since then. > > The service manual is available online from Agilent. Required calibration > equipment is well beyond my meager 'home lab'? inventory. I have a couple > of GR resistance standards at 0.01%, but the cal procedure calls for > 0.0005%. Some of the tests require a voltmeter that has 10x the accuracy > of the 3468A? **AND** has been calibrated to that accuracy within the > previous 24hours of running the 3468A cal. > > I also have a couple of Solartron 7060s (one re-branded as a WESTON 7060), > a Solartron 7081 and miscellaneous toys. > > So aside from selling my car to pay for NIST traceable calibration for all > this equipment, what other options are there? > > Best, > Jerry > > p.s. The time-nuts T-bolt group buy lets me do the frequency related > stuff.? Thanks TAPR! > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. > >

EA

Electronics and Books

Mon, Oct 5, 2009 12:03 PM

Easyis way is that you have something stable. Then measure it at a place where they can do that with great accuracy and write the value on the resistor together with the teperature. Then this is your reference. So you dont have a 10K resistor but a 10.001234 k resistor. As far as you know the difference its ok.
A reference with an LTZ1000 voltage standard ic at about 7V is less than 1ppm per year after the first year.

Met vriendelijke groeten
Regards

ElectronicsAndBooks@Yahoo.com
http://www.ElectronicsAndBooks.tk
TEL +31-(0)6-36024590

--- On Sun, 10/4/09, gsteinba52@aol.com gsteinba52@aol.com wrote:

From: gsteinba52@aol.com gsteinba52@aol.com
Subject: [volt-nuts] Calibration
To: volt-nuts@febo.com
Date: Sunday, October 4, 2009, 11:54 PM
Hello fellow nut-cases.

What does everyone do for calibration? I recently powered
an instrument (HP 3468A) and it displayed "ERROR 1" - which
means the battery backed CAL RAM values are kaput. I popped
the cover to discover the battery had been replaced at some
time (it is putting out the required 3Vdc) but the RAM
contents have probably been toast since then.

The service manual is available online from Agilent.
Required calibration equipment is well beyond my meager
'home lab'? inventory. I have a couple of GR resistance
standards at 0.01%, but the cal procedure calls for 0.0005%.
Some of the tests require a voltmeter that has 10x the
accuracy of the 3468A? AND has been calibrated to that
accuracy within the previous 24hours of running the 3468A
cal.

I also have a couple of Solartron 7060s (one re-branded as
a WESTON 7060), a Solartron 7081 and miscellaneous toys.

So aside from selling my car to pay for NIST traceable
calibration for all this equipment, what other options are
there?

Best,
Jerry

p.s. The time-nuts T-bolt group buy lets me do the
frequency related stuff.? Thanks TAPR!

volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.

Easyis way is that you have something stable. Then measure it at a place where they can do that with great accuracy and write the value on the resistor together with the teperature. Then this is your reference. So you dont have a 10K resistor but a 10.001234 k resistor. As far as you know the difference its ok. A reference with an LTZ1000 voltage standard ic at about 7V is less than 1ppm per year after the first year. Met vriendelijke groeten Regards ElectronicsAndBooks@Yahoo.com http://www.ElectronicsAndBooks.tk TEL +31-(0)6-36024590 --- On Sun, 10/4/09, gsteinba52@aol.com <gsteinba52@aol.com> wrote: > From: gsteinba52@aol.com <gsteinba52@aol.com> > Subject: [volt-nuts] Calibration > To: volt-nuts@febo.com > Date: Sunday, October 4, 2009, 11:54 PM > Hello fellow nut-cases. > > What does everyone do for calibration? I recently powered > an instrument (HP 3468A) and it displayed "ERROR 1" - which > means the battery backed CAL RAM values are kaput. I popped > the cover to discover the battery had been replaced at some > time (it is putting out the required 3Vdc) but the RAM > contents have probably been toast since then. > > The service manual is available online from Agilent. > Required calibration equipment is well beyond my meager > 'home lab'? inventory. I have a couple of GR resistance > standards at 0.01%, but the cal procedure calls for 0.0005%. > Some of the tests require a voltmeter that has 10x the > accuracy of the 3468A? **AND** has been calibrated to that > accuracy within the previous 24hours of running the 3468A > cal. > > I also have a couple of Solartron 7060s (one re-branded as > a WESTON 7060), a Solartron 7081 and miscellaneous toys. > > So aside from selling my car to pay for NIST traceable > calibration for all this equipment, what other options are > there? > > Best, > Jerry > > p.s. The time-nuts T-bolt group buy lets me do the > frequency related stuff.? Thanks TAPR! > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. >

EA

Electronics and Books

Thu, Oct 8, 2009 9:27 PM

New book

Superior-Order Curvature-Correction Techniques for Voltage References
9781441904157 (1441904158), Springer, 2009
The book is dedicated to the analysis and design of voltage reference circuits, the intended audience being high-level students and specialists in the area of analog and mixed-signal CMOS VLSI design. The aim of the book is to evaluate the possibilities of improving the thermal behavior of voltage references by implementing superior-order curvature-correction techniques.

http://book.pdfchm.net/Superior-Order-Curvature-Correction-Techniques-for-Voltage-References/9781441904157/

Met vriendelijke groeten
Regards

ElectronicsAndBooks@Yahoo.com
http://www.ElectronicsAndBooks.tk
TEL +31-(0)6-36024590

New book Superior-Order Curvature-Correction Techniques for Voltage References 9781441904157 (1441904158), Springer, 2009 The book is dedicated to the analysis and design of voltage reference circuits, the intended audience being high-level students and specialists in the area of analog and mixed-signal CMOS VLSI design. The aim of the book is to evaluate the possibilities of improving the thermal behavior of voltage references by implementing superior-order curvature-correction techniques. http://book.pdfchm.net/Superior-Order-Curvature-Correction-Techniques-for-Voltage-References/9781441904157/ Met vriendelijke groeten Regards ElectronicsAndBooks@Yahoo.com http://www.ElectronicsAndBooks.tk TEL +31-(0)6-36024590

M

mikes@flatsurface.com

Wed, Oct 28, 2009 10:26 PM

At 05:27 PM 10/8/2009, Electronics and Books wrote...

New book

Oh. An advertisement for a $100+ book.

http://book.pdfchm.net...

from the URI, one might think that this pointed to a downloadable .pdf.

At 05:27 PM 10/8/2009, Electronics and Books wrote... >New book Oh. An advertisement for a $100+ book. >http://book.pdfchm.net... from the URI, one might think that this pointed to a downloadable .pdf.

volt-nuts@lists.febo.com

Calibration