Empathy List Archives

DM

Demian Martin

Tue, Apr 17, 2012 6:17 AM

Steve-
I sent you a copy on a separate e-mail. Its 5 MB. I hope it gets through.

It's a KV divider, I have the VDR106-7 which has the .1 ppm resolution (7
digits). The manual covers all the variations. Its still pretty much state
of the art, which has not moved much. The next level really is a JJ array,
not really a hobbiest possibility.
Demian

Date: Sun, 15 Apr 2012 21:59:40 -0400
From: Steve Byan stevebyan@verizon.net
To: volt-nuts@febo.com
Subject: [volt-nuts] Julie Research Labs VDR-106 manual?
Message-ID: F5BC51A1-33F0-40FF-81CE-FCC832C0CFB4@verizon.net
Content-Type: text/plain; charset=us-ascii

I'm in need of a copy of the manual for a Julie Research Labs VDR-106 that

I picked up at the MIT flea today. I'm not even sure what it is; it looks
like a >six-digit Kelvin-Varley divider. Anyone happen to have a scan or
hardcopy of the manual?

Best regards,
-Steve

Steve- I sent you a copy on a separate e-mail. Its 5 MB. I hope it gets through. It's a KV divider, I have the VDR106-7 which has the .1 ppm resolution (7 digits). The manual covers all the variations. Its still pretty much state of the art, which has not moved much. The next level really is a JJ array, not really a hobbiest possibility. Demian >Date: Sun, 15 Apr 2012 21:59:40 -0400 >From: Steve Byan <stevebyan@verizon.net> >To: volt-nuts@febo.com >Subject: [volt-nuts] Julie Research Labs VDR-106 manual? >Message-ID: <F5BC51A1-33F0-40FF-81CE-FCC832C0CFB4@verizon.net> >Content-Type: text/plain; charset=us-ascii >I'm in need of a copy of the manual for a Julie Research Labs VDR-106 that I picked up at the MIT flea today. I'm not even sure what it is; it looks like a >six-digit Kelvin-Varley divider. Anyone happen to have a scan or hardcopy of the manual? >Best regards, >-Steve

SB

Steve Byan

Tue, Apr 17, 2012 12:02 PM

On Apr 17, 2012, at 2:17 AM, Demian Martin wrote:

Steve-
I sent you a copy on a separate e-mail. Its 5 MB. I hope it gets through.

Thanks, Robert Atkinson sent me a copy also. They both are the same scan, but curiously your PDF is 200 kB smaller; it was modified the day after it was scanned.

It's a KV divider, I have the VDR106-7 which has the .1 ppm resolution (7
digits). The manual covers all the variations. Its still pretty much state
of the art, which has not moved much. The next level really is a JJ array,
not really a hobbiest possibility.

Yes, it's quite a nice piece of gear. Now it's time to get serious about getting a good voltage standard :-)

Best regards,
-Steve

--
Steve Byan stevebyan@me.com
Littleton, MA 01460

On Apr 17, 2012, at 2:17 AM, Demian Martin wrote: > Steve- > I sent you a copy on a separate e-mail. Its 5 MB. I hope it gets through. Thanks, Robert Atkinson sent me a copy also. They both are the same scan, but curiously your PDF is 200 kB smaller; it was modified the day after it was scanned. > > It's a KV divider, I have the VDR106-7 which has the .1 ppm resolution (7 > digits). The manual covers all the variations. Its still pretty much state > of the art, which has not moved much. The next level really is a JJ array, > not really a hobbiest possibility. Yes, it's quite a nice piece of gear. Now it's time to get serious about getting a good voltage standard :-) Best regards, -Steve -- Steve Byan <stevebyan@me.com> Littleton, MA 01460

RA

Robert Atkinson

Tue, Apr 17, 2012 5:16 PM

Hi Steve,
I think it is the same scan. I had to search for a hard copy and ended up purchasing one from a dealer. Even Ohm-Labs (who own the JRL IP) didn't have a copy. They do now :o)
Calibration is fairly easy with 10 matched resistors. JRL conviniced NPL to use their method (see back ov manual) also google harmon divider. JRL guaranteed accuracy for 5 years!

Regards,
Robert G8RPI

From: Steve Byan stevebyan@verizon.net
To: volt-nuts@febo.com
Sent: Tuesday, 17 April 2012, 13:02
Subject: Re: [volt-nuts] Julie Research Labs VDR-106 manual?

On Apr 17, 2012, at 2:17 AM, Demian Martin wrote:

Steve-
I sent you a copy on a separate e-mail. Its 5 MB. I hope it gets through.

Thanks, Robert Atkinson sent me a copy also. They both are the same scan, but curiously your PDF is 200 kB smaller; it was modified the day after it was scanned.

It's a KV divider, I have the VDR106-7 which has the .1 ppm resolution (7
digits). The manual covers all the variations. Its still pretty much state
of the art, which has not moved much. The next level really is a JJ array,
not really a hobbiest possibility.

Yes, it's quite a nice piece of gear. Now it's time to get serious about getting a good voltage standard :-)

Best regards,
-Steve

--
Steve Byan stevebyan@me.com
Littleton, MA 01460

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.

Hi Steve, I think it is the same scan. I had to search for a hard copy and ended up purchasing one from a dealer. Even Ohm-Labs (who own the JRL IP) didn't have a copy. They do now :o) Calibration is fairly easy with 10 matched resistors. JRL conviniced NPL to use their method (see back ov manual) also google harmon divider. JRL guaranteed accuracy for 5 years! Regards, Robert G8RPI ________________________________ From: Steve Byan <stevebyan@verizon.net> To: volt-nuts@febo.com Sent: Tuesday, 17 April 2012, 13:02 Subject: Re: [volt-nuts] Julie Research Labs VDR-106 manual? On Apr 17, 2012, at 2:17 AM, Demian Martin wrote: > Steve- > I sent you a copy on a separate e-mail. Its 5 MB. I hope it gets through. Thanks, Robert Atkinson sent me a copy also. They both are the same scan, but curiously your PDF is 200 kB smaller; it was modified the day after it was scanned. > > It's a KV divider, I have the VDR106-7 which has the .1 ppm resolution (7 > digits). The manual covers all the variations. Its still pretty much state > of the art, which has not moved much. The next level really is a JJ array, > not really a hobbiest possibility. Yes, it's quite a nice piece of gear. Now it's time to get serious about getting a good voltage standard :-) Best regards, -Steve -- Steve Byan <stevebyan@me.com> Littleton, MA 01460 _______________________________________________ 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.

SB

Steve Byan

Tue, Apr 17, 2012 5:37 PM

On Apr 17, 2012, at 1:16 PM, Robert Atkinson wrote:

Hi Steve,
I think it is the same scan. I had to search for a hard copy and ended up purchasing one from a dealer. Even Ohm-Labs (who own the JRL IP) didn't have a copy. They do now :o)
Calibration is fairly easy with 10 matched resistors. JRL conviniced NPL to use their method (see back ov manual) also google harmon divider. JRL guaranteed accuracy for 5 years!

Yes, it's going to offer many hours of fun :-) I don't even have a thermometer in the lab yet, much less any resistors with a low enough tempco to be worth matching to 1 ppm. I've got quite a bit of work to do before I'm up to the challenge of the VDR-106.

Best regards,
-Steve

--
Steve Byan stevebyan@me.com
Littleton, MA 01460

On Apr 17, 2012, at 1:16 PM, Robert Atkinson wrote: > Hi Steve, > I think it is the same scan. I had to search for a hard copy and ended up purchasing one from a dealer. Even Ohm-Labs (who own the JRL IP) didn't have a copy. They do now :o) > Calibration is fairly easy with 10 matched resistors. JRL conviniced NPL to use their method (see back ov manual) also google harmon divider. JRL guaranteed accuracy for 5 years! Yes, it's going to offer many hours of fun :-) I don't even have a thermometer in the lab yet, much less any resistors with a low enough tempco to be worth matching to 1 ppm. I've got quite a bit of work to do before I'm up to the challenge of the VDR-106. Best regards, -Steve -- Steve Byan <stevebyan@me.com> Littleton, MA 01460

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Re: [volt-nuts] Julie Research Labs VDR-106 manual?