[volt-nuts] Another different question for Fluke 732A owners
Has anyone looked into swapping the SLA's with the short life expectancy for some of the new LI batteries? My guess is that the box draws around 300 mA at 24V or around 7W (seems excessive today). There are a number of high current LI options that would easily fit, weigh a lot less get rid of the lead and its disposal problems etc. I don't think the charger would need a lot of rework either and there are protection boards and other stuff all over ebay for LiFE or LIPO batteries. I have one 732A so it's a lot of effort for one box but if you have several its worth looking into. Perhaps a kit to make the change would be popular? ___ 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.
Re: [volt-nuts] Question for Fluke 732A owners
Having done my OB/Gyn and Ped's rotations, I am familiar with the 'gender ambiguity' issues. Just having some fun! :^)) Joe -Original Message- From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of Mike S Sent: Wednesday, February 26, 2014 6:48 PM To: volt-nuts@febo.com Subject: Re: [volt-nuts] Question for Fluke 732A owners On 2/26/2014 6:53 PM, J. L. Trantham wrote: > Oh!! THAT's what they mean by 'male' and 'female'. I get it! :^)) You jest, but it's not always clear. Take the common Cannon "D-sub" connectors. A connector with male contacts will have have a female shield, making gender ambiguous. That's why they come in P (pin) or S (socket) forms, and not male/female. Or the old Token Ring connectors (or even older GR-874), which were hermaphroditic. ___ 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.
Re: [volt-nuts] Question for Fluke 732A owners
My concern was the size of the meter leads mixed with my daily intake of caffeine. I did not want to add another repair job to my list of to-do's. I have measured them in the past, but the location is a little difficult to access due to the placement of the 732A's. I want to make an adapter that converts to banana jacks or similar. I would then run the cables to the front near the rest of the binding posts. Todd ___ 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.
Re: [volt-nuts] Solartron 7071 on ebay UK
Congrats. Does it include a calibration key? A few of us have one, or you may get one made by a locksmith if you plan on servicing it yourself. I bought a used 7061 last year that looked showroom new. The original stickers from Solartron were unbroken and had only one issue, the Varta battery was dead. It leaked onto the digital board and caused corrosion. The meter reported GLUG errors on power-up, but once it was cleaned and replaced, all was well. It just needs a cal and it will be ready to go. I think others have reported battery issues and it should be easy to get if it is a similar model. I found mine at Newark, so Farnell would probably have it too. I used a 3.6V 110mAH NI-MH battery vs the old NI-Cd. The Varta pn is 55711603800. Todd ___ 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.
Re: [volt-nuts] Question for Fluke 732A owners
If you put a 34401A in the high-input impedance mode you can fairly accurately measure the battery voltage from the outside across two of the pins. -Original Message- From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of T. Micallef Sent: Wednesday, February 26, 2014 9:18 PM To: volt-nuts@febo.com Subject: Re: [volt-nuts] Question for Fluke 732A owners Male pins on six battery packs. I had the same issue with Fluke and their plugs without contacts. I will have to contact Kensington about availability. It is not on my priority list at the moment but I would like to add a remote reading of the charging voltage. Hopefully I can tell if the batteries are failing prematurely. I had two packs fail last year. A single battery in one, and two in another. Todd ___ 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.
Re: [volt-nuts] Question for Fluke 732A owners
Male pins on six battery packs. I had the same issue with Fluke and their plugs without contacts. I will have to contact Kensington about availability. It is not on my priority list at the moment but I would like to add a remote reading of the charging voltage. Hopefully I can tell if the batteries are failing prematurely. I had two packs fail last year. A single battery in one, and two in another. Todd ___ 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.
Re: [volt-nuts] Question for Fluke 732A owners
On 2/26/2014 6:53 PM, J. L. Trantham wrote: Oh!! THAT's what they mean by 'male' and 'female'. I get it! :^)) You jest, but it's not always clear. Take the common Cannon "D-sub" connectors. A connector with male contacts will have have a female shield, making gender ambiguous. That's why they come in P (pin) or S (socket) forms, and not male/female. Or the old Token Ring connectors (or even older GR-874), which were hermaphroditic. ___ 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.
Re: [volt-nuts] Question for Fluke 732A owners
Male contacts (3) -Original Message- From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of Charles Steinmetz Sent: Wednesday, February 26, 2014 5:47 PM To: VoltNuts Subject: [volt-nuts] Question for Fluke 732A owners Fluke used two different connector schemes for the DC input on 732A battery packs. The oldest units have a pair of banana jacks, and later units use a 3-pin connector made by Hypertronics. My question concerns only the latter (732A battery packs with the Hypertronics connectors). The Hypertronics contacts are interchangeable between the panel mount connector body and the plug body. It is customary to build the panel mount connectors with female contacts, and the plugs with male contacts. However, it appears that Fluke may have made at least some 732A battery packs with male contacts in the panel mount connectors. I'd be interested to know what is out there in the field. If you have a 732A battery module with the Hypertronics 3-pin connector, could you please look at the connector and let me know if the contacts are male or female? Just to be painfully clear, I'm referring to the gold-plated metal contacts only, not to the black plastic parts of the connector. The gold-plated metal contacts can be male (i.e., the metal part you can see is a solid pin) or female (i.e., the metal part you can see is a hole that will accept a pin). Thank you, Charles ___ 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.
Re: [volt-nuts] Question for Fluke 732A owners
Oh!! THAT's what they mean by 'male' and 'female'. I get it! :^)) My 732A has male pins on the battery module and female sockets on the mating connector/plug. BTW, the mating connector is not easy to find. Several phone calls to Fluke led me to Fluke Item Number 2181497, Description: 100-166, PLUG - MALE, H. I ordered two but all that arrived was the shell, no contacts. I tried calling Fluke but was unable to find anyone that had a clue about the plug or it's contacts. Perhaps I'll try again when I get some spare time to spend another hour on the phone. An effort with the Hypertronics website led to P/N D01PB306FSTAH which is the mating plug for the Fluke 732A, contacts and all. The plug is composed of two components: HYP D01PB306NT, PLUG, 3P BLACK, and HYP YSK006-010ANH, SOCKET, SOLDER CUP 50 UIN, but it is ordered with the P/N listed. I found them at Kensington Electronics in Austin, TX, with a minimum $50 order. I ordered 6 after reviewing the specifics with the sales person who confirmed that I had the correct part number. They work perfectly. I have some spares if anyone is interested. If you wanted male contacts for the mating plug for the 732A, as best I can tell, the P/N would be D01PB306MSTH. The 'TAH' relates to 50 uin gold over nickel plating over female sockets and the 'TH' relates to 50 uin gold over nickel plating over male pins. A little time with the data sheet for the Hypertronics connectors should make it all clear. Joe -Original Message- From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of Charles Steinmetz Sent: Wednesday, February 26, 2014 4:47 PM To: VoltNuts Subject: [volt-nuts] Question for Fluke 732A owners Fluke used two different connector schemes for the DC input on 732A battery packs. The oldest units have a pair of banana jacks, and later units use a 3-pin connector made by Hypertronics. My question concerns only the latter (732A battery packs with the Hypertronics connectors). The Hypertronics contacts are interchangeable between the panel mount connector body and the plug body. It is customary to build the panel mount connectors with female contacts, and the plugs with male contacts. However, it appears that Fluke may have made at least some 732A battery packs with male contacts in the panel mount connectors. I'd be interested to know what is out there in the field. If you have a 732A battery module with the Hypertronics 3-pin connector, could you please look at the connector and let me know if the contacts are male or female? Just to be painfully clear, I'm referring to the gold-plated metal contacts only, not to the black plastic parts of the connector. The gold-plated metal contacts can be male (i.e., the metal part you can see is a solid pin) or female (i.e., the metal part you can see is a hole that will accept a pin). Thank you, Charles ___ 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.
Re: [volt-nuts] Electro Instruments 3500
Well at $60 for a manual I will have to pass. Tucker was never known for bargains. Notice that my unit has the Hughes green panel color rather than the standard (gray I think). Bob On Wednesday, February 26, 2014 3:09 PM, "Marv @ Home" wrote: Nice, an Electro Instrument 3500 Voltmeter from early 1960s, a beauty and collector item, less so for production use. Still has the Hughes aircraft stickers on them too, from their HQ in El Segundo. Some info here: http://www.etestmanuals.com/Search.aspx?Mfg=ETI of interest: http://imagehost.vendio.com/bin/viewimage.x//ggardenour/AQ0451.JPG?vvid=15142926&allow_track_link=1&track=027e6fc266-3281e&sp=0&vsid=1&vgp=1 Enjoy. At 12:51 PM 2/26/2014, Bob Albert wrote: >This is the link: > > >http://imgur.com/a/8leSW > >Bob ___ 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] Electro Instruments 3500
Nice, an Electro Instrument 3500 Voltmeter from early 1960s, a beauty and collector item, less so for production use. Still has the Hughes aircraft stickers on them too, from their HQ in El Segundo. Some info here: http://www.etestmanuals.com/Search.aspx?Mfg=ETI of interest: http://imagehost.vendio.com/bin/viewimage.x//ggardenour/AQ0451.JPG?vvid=15142926&allow_track_link=1&track=027e6fc266-3281e&sp=0&vsid=1&vgp=1 Enjoy. At 12:51 PM 2/26/2014, Bob Albert wrote: This is the link: http://imgur.com/a/8leSW Bob ___ 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] Question for Fluke 732A owners
Fluke used two different connector schemes for the DC input on 732A battery packs. The oldest units have a pair of banana jacks, and later units use a 3-pin connector made by Hypertronics. My question concerns only the latter (732A battery packs with the Hypertronics connectors). The Hypertronics contacts are interchangeable between the panel mount connector body and the plug body. It is customary to build the panel mount connectors with female contacts, and the plugs with male contacts. However, it appears that Fluke may have made at least some 732A battery packs with male contacts in the panel mount connectors. I'd be interested to know what is out there in the field. If you have a 732A battery module with the Hypertronics 3-pin connector, could you please look at the connector and let me know if the contacts are male or female? Just to be painfully clear, I'm referring to the gold-plated metal contacts only, not to the black plastic parts of the connector. The gold-plated metal contacts can be male (i.e., the metal part you can see is a solid pin) or female (i.e., the metal part you can see is a hole that will accept a pin). Thank you, Charles ___ 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.
Re: [volt-nuts] Newbie here...
This is the link: http://imgur.com/a/8leSW Bob On Wednesday, February 26, 2014 12:53 AM, cheater00 . wrote: Bob, you have to give us the link for the album. When you uploaded the images, the site showed you a link that you need to copy and paste for us. It should be described as "share album" or something like that. If you had already closed the site, maybe it's still in your browser's history. Cheers, D. On Wed, Feb 26, 2014 at 6:51 AM, Bob Albert wrote: > I think it's imgur.com > > > > > > On Tuesday, February 25, 2014 9:35 PM, wb6bnq wrote: > > > Hi Bob, > > As I have never heard of imgur, it would be helpful to provide a proper > link to the site. > > BillWB6BNQ > > > Bob Albert wrote: > The pics are in imgur under voltnuts. Bob On Sunday, February 23, 2014 1:47 > PM, Bob Albert wrote: Pete, Oh yes those Harbor Freight > jobs have to be the bargain of the century. And from time to time they even > give them away. I am currently checking my time base calibration against WWV > at 20 MHz. It's a treat when I can hear them at that frequency so I try to > get as close as I can. I usually can get within 0.1 Hz for an error of only > 5 ppb, not too shabby. Harder to calibrate voltage though. My IC 10V > standards are presumed to be within about .05%, close enough for most work > but I want to do better. I do have five of them and can average them but > that's subject to systematic errors, since they are all from the same vendor > (I think). And that doesn't count aging, important because they are at least > 10-15 years old. Bob On Sunday, February 23, 2014 1:17 PM, Pete Lancashire > wrote: Again just my few > cents >>1 KV on the classics >>Be very very careful. I was not uncommon for both of these guys to arc over. >>If you do work with voltages in that space, consider a divider probe. If you >>do keep playing over about 4 digits at some point you going to need to >>decided that your absolute measurements are not important or get something >>like the 3456A calibrated, or the calibrator you have. I've had good luck >>with one of the > few meteorology labs where I live having things calibrated for very little as > long as I don't want that little sticker. Once they found out I had a just > acquired set of L&N 4000s that I wanted to cal, they even let me do it > myself. For a few $'s there is a small one man company in Washington state > that sells a nicely done set of voltage sources. > http://www.voltagestandard.com/ If you add up the parts cost, etc. they are a > bargain and well built (not a customer but would be if didn't have the stuff > I have). -pete There is a H-F about 1 mile from where I live. One day there > were about 20 of the Red DMM in the dumpster, I could not resist. Fixed all > except 2 put 2 in the truck and gave the rest away. 90% assembly issues. On > Sun, Feb 23, 2014 at 10:21 AM, Bob Albert wrote: Well > all comments are appreciated and well noted. The 3456A is indeed a Pandora's > box and is, as suggested, on the back burner for now. >>As for the Dana, I have tried all the above. I replaced one IC that seemed >>to be the root of the trouble, to no avail. The unit is very clean. I spray >>cooled it when it did its trouble thing and it came back to operation but I >>haven't been able to find the offending component or solder joint. Power >>supply seems good throughout. I paid so little for this, and I have so many >>other units, that I am loath to spend money on a diagram, especially when it >>is no guarantee of giving me the needed information. Plus, the 300-page HP >>manual is free for download, so it feels like the tail is wagging the dog >>here. I will pay attention to the KO4BB site for when the HP manual will >>appear. But if I need to measure something, I certainly have the tools to do >>it. If the voltage is above 1 kV I have my Simpson 260 and Triplett 630-NA >>for that. And I am ashamed to admit, a couple Radio Schlock VOMs. The whole >>thing here is that I enjoy playing with accurate > stuff even though I have no legitimate use for 6-digit voltage measurements. >One thing about the HP that appeals is the accurate Ohmmeter. I have a GR >1658 bridge that is very accurate but it doesn't measure at DC, so is >cumbersome for inductors, etc. And of course the delightful little toy, the >Harbor Freight DVM, is a bargain that can't be approached by 'normal' units. >I have several of them and, within their limitations, they are great units. >There is a calibrate pot inside that takes care of any ordinary reading >errors. And if I blow it up, I pick up another without that dreaded feeling >of having broken something valuable. Bob On Sunday, February 23, 2014 3:55 AM, >Artek Manuals wrote: Bob et all 1) We have a 1st >class scan of the R-D 4200, manual with complete > schematics available at a modest price > 2) We have a VERY NICE scan (NOT a retread of the poor quality of > Agilent scan) 600d
Re: [volt-nuts] Solartron 7071 on ebay UK
Nice find on the 7071 :) I append here to David's message: if anyone happen to have or know of a foating board of a 7071 or 7081, I'd like have one to play with. I'm not referring to your meter, David, since I'm not searching the whole meter but the board only at a small enough price to play with it. I remember some time ago (probably one year or so) I saw an ebay auction of bare 7081 boards. Thanks, Fabio Eboli. Il 2014-02-26 14:54 David C. Partridge ha scritto: Wohoo! Congrats ... PS To all - if anyone hears of either a 7071 or 7081 being parted out, I have a 7071 with a sick earthy processor board that I've not been able to fix :( Dave Partridge -Original Message- From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of Robert Atkinson Sent: 26 February 2014 12:40 To: volt-nuts@febo.com Subject: [volt-nuts] Solartron 7071 on ebay UK Hi, I just won a 7071 on ebay complete with input lead. The seller is listing another one, item 231167733398 for a bit more money than I paid. Presumably because it's "claibration is valid" I do note that the cal sticker on the on I won (haven't received the meter yet) expired late last year and is blue with "calibration" (looks like IFR) on it. The current listing meter has a yellow "concessed calibration" sticker so has either not been checked on all ranges/functions or to full specifications so watch out if you bid on it. The seller, Leafiead, is a MOD disposals agent but has no technical knowledge. It will be nice to have a big Solartron again and this 7.5 digit unit (same circuit as 7081 8.5 digit) is effectively calibrated for life to 6.5 digit accuracy. Robert G8RPI. ___ 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.
Re: [volt-nuts] Another newbie...
Not better, just alternative : Craiglist.org ebid.net http://www.govdeals.com/ http://www.govliquidation.com/ http://us.ebid.net/for-sale/fluke-510a-ac-reference-standard-100khz-10v-rms-working-68605046.htm This Fluke AC reference is still listed now on ~2 years. Just as a food for thought. On eBay it would be gone in 2-4 weeks. At 10:08 PM 2/23/2014, new wrote: Hi! to all volt-nuts! Question - is there any place that is better than ebay to find 'volt-nut' type things? I'm guessing that it's best to stay in the US to avoid border issues with precision devices, even if they are decades old, e.g., 3458a. Thanks! Willy ___ ___ 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.
Re: [volt-nuts] Solartron 7071 on ebay UK
Wohoo! Congrats ... PS To all - if anyone hears of either a 7071 or 7081 being parted out, I have a 7071 with a sick earthy processor board that I've not been able to fix :( Dave Partridge -Original Message- From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of Robert Atkinson Sent: 26 February 2014 12:40 To: volt-nuts@febo.com Subject: [volt-nuts] Solartron 7071 on ebay UK Hi, I just won a 7071 on ebay complete with input lead. The seller is listing another one, item 231167733398 for a bit more money than I paid. Presumably because it's "claibration is valid" I do note that the cal sticker on the on I won (haven't received the meter yet) expired late last year and is blue with "calibration" (looks like IFR) on it. The current listing meter has a yellow "concessed calibration" sticker so has either not been checked on all ranges/functions or to full specifications so watch out if you bid on it. The seller, Leafiead, is a MOD disposals agent but has no technical knowledge. It will be nice to have a big Solartron again and this 7.5 digit unit (same circuit as 7081 8.5 digit) is effectively calibrated for life to 6.5 digit accuracy. Robert G8RPI. ___ 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] Solartron 7071 on ebay UK
Hi, I just won a 7071 on ebay complete with input lead. The seller is listing another one, item 231167733398 for a bit more money than I paid. Presumably because it's "claibration is valid" I do note that the cal sticker on the on I won (haven't received the meter yet) expired late last year and is blue with "calibration" (looks like IFR) on it. The current listing meter has a yellow "concessed calibration" sticker so has either not been checked on all ranges/functions or to full specifications so watch out if you bid on it. The seller, Leafiead, is a MOD disposals agent but has no technical knowledge. It will be nice to have a big Solartron again and this 7.5 digit unit (same circuit as 7081 8.5 digit) is effectively calibrated for life to 6.5 digit accuracy. Robert G8RPI. ___ 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.
Re: [volt-nuts] Newbie here...
Bob, you have to give us the link for the album. When you uploaded the images, the site showed you a link that you need to copy and paste for us. It should be described as "share album" or something like that. If you had already closed the site, maybe it's still in your browser's history. Cheers, D. On Wed, Feb 26, 2014 at 6:51 AM, Bob Albert wrote: > I think it's imgur.com > > > > > > On Tuesday, February 25, 2014 9:35 PM, wb6bnq wrote: > > > Hi Bob, > > As I have never heard of imgur, it would be helpful to provide a proper > link to the site. > > BillWB6BNQ > > > Bob Albert wrote: > The pics are in imgur under voltnuts. Bob On Sunday, February 23, 2014 1:47 > PM, Bob Albert wrote: Pete, Oh yes those Harbor Freight > jobs have to be the bargain of the century. And from time to time they even > give them away. I am currently checking my time base calibration against WWV > at 20 MHz. It's a treat when I can hear them at that frequency so I try to > get as close as I can. I usually can get within 0.1 Hz for an error of only > 5 ppb, not too shabby. Harder to calibrate voltage though. My IC 10V > standards are presumed to be within about .05%, close enough for most work > but I want to do better. I do have five of them and can average them but > that's subject to systematic errors, since they are all from the same vendor > (I think). And that doesn't count aging, important because they are at least > 10-15 years old. Bob On Sunday, February 23, 2014 1:17 PM, Pete Lancashire > wrote: Again just my few > cents >>1 KV on the classics >>Be very very careful. I was not uncommon for both of these guys to arc over. >>If you do work with voltages in that space, consider a divider probe. If you >>do keep playing over about 4 digits at some point you going to need to >>decided that your absolute measurements are not important or get something >>like the 3456A calibrated, or the calibrator you have. I've had good luck >>with one of the > few meteorology labs where I live having things calibrated for very little as > long as I don't want that little sticker. Once they found out I had a just > acquired set of L&N 4000s that I wanted to cal, they even let me do it > myself. For a few $'s there is a small one man company in Washington state > that sells a nicely done set of voltage sources. > http://www.voltagestandard.com/ If you add up the parts cost, etc. they are a > bargain and well built (not a customer but would be if didn't have the stuff > I have). -pete There is a H-F about 1 mile from where I live. One day there > were about 20 of the Red DMM in the dumpster, I could not resist. Fixed all > except 2 put 2 in the truck and gave the rest away. 90% assembly issues. On > Sun, Feb 23, 2014 at 10:21 AM, Bob Albert wrote: Well > all comments are appreciated and well noted. The 3456A is indeed a Pandora's > box and is, as suggested, on the back burner for now. >>As for the Dana, I have tried all the above. I replaced one IC that seemed >>to be the root of the trouble, to no avail. The unit is very clean. I spray >>cooled it when it did its trouble thing and it came back to operation but I >>haven't been able to find the offending component or solder joint. Power >>supply seems good throughout. I paid so little for this, and I have so many >>other units, that I am loath to spend money on a diagram, especially when it >>is no guarantee of giving me the needed information. Plus, the 300-page HP >>manual is free for download, so it feels like the tail is wagging the dog >>here. I will pay attention to the KO4BB site for when the HP manual will >>appear. But if I need to measure something, I certainly have the tools to do >>it. If the voltage is above 1 kV I have my Simpson 260 and Triplett 630-NA >>for that. And I am ashamed to admit, a couple Radio Schlock VOMs. The whole >>thing here is that I enjoy playing with accurate > stuff even though I have no legitimate use for 6-digit voltage measurements. > One thing about the HP that appeals is the accurate Ohmmeter. I have a GR > 1658 bridge that is very accurate but it doesn't measure at DC, so is > cumbersome for inductors, etc. And of course the delightful little toy, the > Harbor Freight DVM, is a bargain that can't be approached by 'normal' units. > I have several of them and, within their limitations, they are great units. > There is a calibrate pot inside that takes care of any ordinary reading > errors. And if I blow it up, I pick up another without that dreaded feeling > of having broken something valuable. Bob On Sunday, February 23, 2014 3:55 > AM, Artek Manuals wrote: Bob et all 1) We have a > 1st class scan of the R-D 4200, manual with complete > schematics available at a modest price > 2) We have a VERY NICE scan (NOT a retread of the poor quality of > Agilent scan) 600dpi scans of the schematics full size up to 27"x 11" > unpieced, again at a very modest price > 3) I am sorry
