Hello Joe, If you're stuck for a manual I know that Manuals Plus have a paper copy for sale. Im also interested in the 9975, but have no experience with it. I would go you halves in buying the manual if you want - I would be happy with a scan. Cheerio, ben. ---------------------------------------- From: "Joe Hobart" <nova@npgcable.com> Sent: Wednesday, January 01, 2014 8:37 AM To: volt-nuts@febo.com Subject: [volt-nuts] Need Guildline 9975 Information A used Guildline 9975 DC Current Comparator Resistance Bridge arrived in a big box yesterday. After some repairs, the unit appears to work, but I have never used one of these bridges before. Why do I say it appears to work? Here are two measurements comparing one Ohm resistors at 30 mA current: L&N 1 Ohm versus Resistor #2 0.9999372 Resistor #2 versus L&N 1 Ohm 1.0000630 The above measurements appear consistent (or I got lucky), but there are several controls/functions I do not understand how to set or use. Does anyone have a Guildline 9975 manual I can buy or borrow and copy? Who has experience with the 9975 and can give me some pointers? Thanks and Happy New Year everyone, Joe Hobart Flagstaff, Arizona _______________________________________________ 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.

Have you asked Guildline. They gave me a copy of some documents and advise when I was restoring my guildline standardcell cabinet oven Fred PA4TIM Van: ben Verzonden: ‎donderdag‎ ‎2‎ ‎januari‎ ‎2014 ‎04‎:‎10 Aan: volt-nuts Hello Joe, If you're stuck for a manual I know that Manuals Plus have a paper copy for sale. Im also interested in the 9975, but have no experience with it. I would go you halves in buying the manual if you want - I would be happy with a scan. Cheerio, ben. ---------------------------------------- From: "Joe Hobart" <nova@npgcable.com> Sent: Wednesday, January 01, 2014 8:37 AM To: volt-nuts@febo.com Subject: [volt-nuts] Need Guildline 9975 Information A used Guildline 9975 DC Current Comparator Resistance Bridge arrived in a big box yesterday. After some repairs, the unit appears to work, but I have never used one of these bridges before. Why do I say it appears to work? Here are two measurements comparing one Ohm resistors at 30 mA current: L&N 1 Ohm versus Resistor #2 0.9999372 Resistor #2 versus L&N 1 Ohm 1.0000630 The above measurements appear consistent (or I got lucky), but there are several controls/functions I do not understand how to set or use. Does anyone have a Guildline 9975 manual I can buy or borrow and copy? Who has experience with the 9975 and can give me some pointers? Thanks and Happy New Year everyone, Joe Hobart Flagstaff, Arizona _______________________________________________ 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. _______________________________________________ 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.

L&N 1 Ohm versus Resistor #2   0.9999372
Resistor #2 versus L&N 1 Ohm   1.0000630

Hi Fred, I plan to work out as many details as I can before I trouble Guildline. Judging from the price they quoted me for a model 9350 10 Ohm Hamon transfer standard, I probably will not buy many new items from them. I want to ask only the most critical and difficult questions. Thanks to Ben, I ordered a manual from Manuals Plus. That should answer many questions about 9975 controls with obscure functions (like what does the OUT - PCA switch do?). The 9975 is comparing two 1000 Ohm resistors, but I have not been able to use a 10K Ohm resistor as either standard or unknown. Hopefully the manual will suggest better control settings and how to minimize drift due to temperature changes. Thanks, Joe On 1/1/2014 11:52 PM, pa4tim@gmail.com wrote: > Have you asked Guildline. They gave me a copy of some documents and advise when > I was restoring my guildline standardcell cabinet oven > > > Fred PA4TIM > > > > > > > > > Van: ben > Verzonden: ‎donderdag‎ ‎2‎ ‎januari‎ ‎2014 ‎04‎:‎10 > Aan: volt-nuts > > > > > > Hello Joe, If you're stuck for a manual I know that Manuals Plus have a > paper copy for sale. Im also interested in the 9975, but have no experience > with it. I would go you halves in buying the manual if you want - I would > be happy with a scan. Cheerio, ben. > > > > > ---------------------------------------- > From: "Joe Hobart" <nova@npgcable.com> > Sent: Wednesday, January 01, 2014 8:37 AM > To: volt-nuts@febo.com > Subject: [volt-nuts] Need Guildline 9975 Information > > A used Guildline 9975 DC Current Comparator Resistance Bridge arrived in a > big > box yesterday. After some repairs, the unit appears to work, but I have > never > used one of these bridges before. > > Why do I say it appears to work? Here are two measurements comparing one > Ohm > resistors at 30 mA current: > > L&N 1 Ohm versus Resistor #2 0.9999372 > Resistor #2 versus L&N 1 Ohm 1.0000630 > > The above measurements appear consistent (or I got lucky), but there are > several > controls/functions I do not understand how to set or use. > > Does anyone have a Guildline 9975 manual I can buy or borrow and copy? > > Who has experience with the 9975 and can give me some pointers? > > Thanks and Happy New Year everyone, > Joe Hobart > Flagstaff, Arizona > _______________________________________________ > 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. > > > _______________________________________________ > 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. > _______________________________________________ > 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. > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2014.0.4259 / Virus Database: 3658/6967 - Release Date: 01/01/14 >