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Re: hp 5100A /5110A synth set
Hi:
I joined this group on the 17th and asked for a daily digest, but none have arrived, so have missed a few postings. I repaired my synth many years ago by replacing the SRD with the biggest slowest one I could find. But it has died again. The problem is in getting a SRD with a lifetime that's long enough to work with a 1 MHz input signal. Since diode lifetime goes up with temperature, HP used a heater to increase the lifetime and thus get a stronger set of combs out of the diode. The idea is that during fordward conduction the diode stores charge and when the input polarity reverses the diode keeps conducting (because of the stored charge). When the stored charge is all removed the diode "snaps" to the reverse voltage. In the ideal case the stored charge runs out when the reverse voltage is at it's negative peak. In this case that would take a huge amount of charge storage and so it's a case of the more charge the higher the output. If someone knows of a large long lifetime SRD (or it may be called a fast PIN, or noise diode) that may be a good choice. Have Fun, Brooke Clarke, N6GCE |
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Re: hp 5100A /5110A synth set
--- In hp_agilent_equipment@..., Morris Odell
<morriso@v...> wrote: Hi Jorgen,Because of it hasn't to be a microwave SRD (as in the most other cases of SRD-use) i think it is possible to substitute it with other types of diodes which also "snap", but unwanted, or better said, not build for to be a SRD. A BA244 Tuner Switching Diode will work well. A few years ago i have "Measured" (Not a perfect measurement, fast thrown together) a step with a slew that nearly matched the rise time of the scope (Tek 2465B, 400MHZ) so that i think it will do a nice job in there. if it is not available down under, i send together with the Manual. I will take a look in our clubstation the next days for it,I haveIs it possible to get a copy of the 5100A manual? All costs covered of i think it is possible. Jorgen |
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Re: follow-up - HP 3439A
computeruser04
The service manual arrived today and it answered my question. The
unit must be zeroed each time it is turned on. Thanks BL --- In hp_agilent_equipment@..., "computeruser04" <computeruser@s...> wrote: The HP 3439A has been repaired. It was C8 on A9 that had failed.about it is appreciated. |
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Re: hp 5100A /5110A synth set
Jose V. Gavila
Well, no so... at least I recalled your message was somewhere in the pile of unanswered ones ;-)!PS.No reply from Jose,will send another message.BG.Jose replied to me yesterday after seeing the above. It seems he is just Sorry for the delay! Regards, JOSE PS to BG: I think I will get the Eddy :-)! ---------------------------------------------------------------------- 73 EB5AGV / EC5AAU - JOSE V. GAVILA La Canyada - Valencia (SPAIN) - Loc: IM99SM Vintage Radio: Vintage Test Equipment: European Boatanchors List: |
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Re: hp 5100A /5110A synth set
Brian Goldsmith
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----- Original Message -----
From: "Morris Odell"> I have the Manuals for those both units at our Ham-RadioIs it possible to get a copy of the 5100A manual? All costs covered of course... Morris Fingers crossed!!!! Brian G. PS.No reply from Jose,will send another message.BG. |
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Re: Introduction
Hi Robert,
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I will be glad to send you pictures. I have so many things going on right now that I do tend to get behind or forget. If you have not heard from me in a week, send me a reminder email. Thanks, Jack Robert Middleton wrote: Hello Jack. |
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HP 4260 Thanks for Help
r_j_shehan
Hello again,
I have already received a number of replies about my sick 4260A. Thanks to the group for their efforts and to the individuals for trying to obtain parts or another unit for me. Being located where I am, it is almost impossible to obtain parts for anything, let alone an obscure, old piece of test equipment. I am also looking on ebay, so if anyone spots a 4260A anywhere, let me know, although just the resistor would be better due to the high cost of postage to Australia. Thanks again, Rod. |
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Re: Introduction
Robert Middleton
开云体育Hello Jack.
?
Thank you for getting back to me. I could be
interested in the 140A and also the 851B. Is there a possibility that you could
send some photos of both? When your time permits please let me
know.
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Also, when you do happen to run accross any of the
military versions that I have mentioned in my e-mail, (heavy rascals!). Thanks
for your time and for your efforts and you and yours have a great
day.
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Respectfully, Robert
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Re: HP 4260A Parts needed
Rod,
Welcome to the hp_agilent_equipment group! If you happen to know anyone who lives near Norfolk, Virginia, the following gov't auction lot might be of particular interest: Bidding opens 5/18 and closes 5/20 at 5 PM. It looks like that auction lot contains some very nice equipment, in unusually-good condition. The HP 4260A Bridge has a condition code of B4, which should mean that it's working fine! For anyone who's close to Norfolk who might be interested in obtaining some of the other equipment in that lot, who could also ship the 4260A to Rod, here's what else is included: Qty (2) AVO E2540 Resistance-Voltage bridges, in A1 condition(!) ESI 250DE Impedance Bridge (cond F7; i.e. probably working) ESI SR1030 100K Resistance Standard, in A1 condition(!) ESI Capacitance Decade, in A4 condition (0.100 to 1.111 uF in 0.001 uF steps, +/- 1%, 500vdc) Guildline 9154A Voltage Standard, in A1 condition(!), 1 volt w/uncertainty of 2 microvolts over 1 year! Shalltronix Decade Resistor, in A4 condition, 0 to 1.111 kOhms in 1 Ohm steps Clarostat 240C Decade Power Resistor (F7 cond), 0 to 999.999 kOhms in 1 Ohm steps, up to 1000vdc max, 5A max. Alternatively, anyone who lives near Norfolk who could just at least go to pick up and ship the equipment could help, too. We could work out any deal you like, if you don't want to do the bidding yourself, whether you just want part of all of the other equipment, or cash reimbursement + expenses etc, or whatever other ideas you might have. Let me know, as soon as possible, since the bidding starts very soon. And, of course, anyone who knows where someone could obtain an HP 4260A parts unit could be of great help, too. I have been in close contact with our new member, Rod Shehan, over the past week or two, via email. And I believe, strongly, that he is deserving of our help, and that he will also become a very valuable member of the group. Sincerely, Tom Gootee (tomg AT fullnet.com) Date: Mon, 17 May 2004 03:40:22 -0000 From: "r_j_shehan" <r_j_shehan@...> Subject: HP 4260A Parts needed Hello group (Hello Tom Gootee!!) This is my almost first post... I own a nice 4260A universal bridge, it has an issue with R3, the big rotating resistor behind the counter assembly. STUPID small wire joining the resistor assembly to the post. Anyone have one of the parts? I need this unit to operate so I can continue making inductors - my hobby / business. I have had a look at Sphere, but they dont list any 4260 parts. Any help would be much appreciated. Rod, from the outback in Western Australia. |
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Re: Introduction
Sorry for the re-post. I had the wrong "Subject" line, the first time.
---------- From: Thomas P. Gootee[SMTP:tomg@...] Sent: Monday, May 17, 2004 10:22 AM To: 'hp_agilent_equipment@...' Subject: RE: [hp_agilent_equipment] Digest Number 101 Jack, I have the military model designation cross-references for most or all of the equipment on your list, which I will email to you. Even better, I have spent a LOT of time ferreting-out any downloadable HP manuals that are available. I will send you a list of all of the URLs for manuals that I have found so far, for the equipment on your list, as soon as I can get time. Some of these manuals are *extremely* difficult to find. Just knowing the military designations and the URLs for the military manuals sites does not even begin to get you there, in many cases. Take a look at the list of manuals that I have already found, at . If some that you need aren't there, I will see if I can find them. P.S. I also have a copy of the FedLog (Federal Logistics) Database, with which I can usually find commercial and military part number/model designation cross-references for a given military for commercial part number or model designation. And that's not just for *equipment* numbers. It also contains most *individual* part numbers! Often, for example, a semiconductor that is just marked with an HP part number can be identified completely, from the database, resulting in a list of commercial part numbers and manufacturers' names, and sometimes the technical specs of the device, etc. And the database seems to contain everything from mule harnesses and horse whips (and where to get them, hehe) to modern ICs and systems (up through about 2002 or so, anyway). So, if anyone would like me to attemp a part-number xref, email me. By the way: I have an HP 608D, too (and all THREE of the military PDF manuals for it). It's a big, gorgeous 0.5 MHz to 510 MHz signal generator (or, in some cases, apparently, 10 MHz to 410 Mhz). Mine was still almost perfectly calibrated, when I got it! (It's for SALE, too...). That one (the HP 608D) is also known as the AN/USM-44A, with the primary unit also known as the TS-510A/U. Regards, Tom Gootee (tomg AT fullnet.com) ----- Original Message ----- From: Jack Crone To: hp_agilent_equipment@... Sent: Thursday, May 13, 2004 10:07 PM Subject: [hp_agilent_equipment] Introduction Greetings All, I am a new member of the group and am looking forward to an enjoyable time here. I have a large inventory of HP boat anchors which I want to dispose of. Some I want to sell as functional units, others might get parted out if there is any market for these parts. There are over 60 units consisting of these models: 130C, 140A, 1900A, 200CD, 214A, 302B, 342A, 400D, 400H, 411A, 415B, 428A, 431B, 5210A, 523C, 606A, 608C, 608D, 612A, 614A, 616A, 618B, 626A, 694A, 851B, 8690A, and probably a few others. Any suggestions for disposing of this would be appreciated. I also need manuals for most models and there are just too many to buy them. I think that there are downloadable manuals for the equivalent military units but I don't know the military model numbers. Is there a cross reference list available? Thanks, Jack |
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Re: Digest Number 101
Jack,
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I have the military model designation cross-references for most or all of the equipment on your list, which I will email to you. Even better, I have spent a LOT of time ferreting-out any downloadable HP manuals that are available. I will send you a list of all of the URLs for manuals that I have found so far, for the equipment on your list, as soon as I can get time. Some of these manuals are *extremely* difficult to find. Just knowing the military designations and the URLs for the military manuals sites does not even begin to get you there, in many cases. Take a look at the list of manuals that I have already found, at . If some that you need aren't there, I will see if I can find them. P.S. I also have a copy of the FedLog (Federal Logistics) Database, with which I can usually find commercial and military part number/model designation cross-references for a given military for commercial part number or model designation. And that's not just for *equipment* numbers. It also contains most *individual* part numbers! Often, for example, a semiconductor that is just marked with an HP part number can be identified completely, from the database, resulting in a list of commercial part numbers and manufacturers' names, and sometimes the technical specs of the device, etc. And the database seems to contain everything from mule harnesses and horse whips (and where to get them, hehe) to modern ICs and systems (up through about 2002 or so, anyway). So, if anyone would like me to attemp a part-number xref, email me. By the way: I have an HP 608D, too (and all THREE of the military PDF manuals for it). It's a big, gorgeous 0.5 MHz to 510 MHz signal generator (or, in some cases, apparently, 10 MHz to 410 Mhz). Mine was still almost perfectly calibrated, when I got it! (It's for SALE, too...). That one (the HP 608D) is also known as the AN/USM-44A, with the primary unit also known as the TS-510A/U. Regards, Tom Gootee (tomg AT fullnet.com) ----- Original Message -----
From: Jack Crone To: hp_agilent_equipment@... Sent: Thursday, May 13, 2004 10:07 PM Subject: [hp_agilent_equipment] Introduction Greetings All, I am a new member of the group and am looking forward to an enjoyable time here. I have a large inventory of HP boat anchors which I want to dispose of. Some I want to sell as functional units, others might get parted out if there is any market for these parts. There are over 60 units consisting of these models: 130C, 140A, 1900A, 200CD, 214A, 302B, 342A, 400D, 400H, 411A, 415B, 428A, 431B, 5210A, 523C, 606A, 608C, 608D, 612A, 614A, 616A, 618B, 626A, 694A, 851B, 8690A, and probably a few others. Any suggestions for disposing of this would be appreciated. I also need manuals for most models and there are just too many to buy them. I think that there are downloadable manuals for the equivalent military units but I don't know the military model numbers. Is there a cross reference list available? Thanks, Jack |
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Re: hp 5100A /5110A synth set
Hello Morris!
In the Synthesizer Driver, there is a step recovery comb generator which was driven by the 1MHz Signal. From those comb generator the ouput was filtered through a lot of filtersbanks to filter out the many frequencies that are available at the outputconectoRS at the rear. I expect that something around the SRD was wrong, the SRD is located (when i rememer right) in an oven, too so maybe that oven is defective. But maybe the normal oven for the xtal has a little overshoot, too or is defective. I have the Manuals for those both units at our Ham-Radio clubstation. I have to look there in the next days. Jorgen |
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HP 4260A Parts needed
r_j_shehan
Hello group (Hello Tom Gootee!!)
This is my almost first post... I own a nice 4260A universal bridge, it has an issue with R3, the big rotating resistor behind the counter assembly. STUPID small wire joining the resistor assembly to the post. Anyone have one of the parts? I need this unit to operate so I can continue making inductors - my hobby / business. I have had a look at Sphere, but they dont list any 4260 parts. Any help would be much appreciated. Rod, from the outback in Western Australia. |
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Re: Introduction
r_j_shehan
Hello Hank and other people in the HP_agilent group!
Crikey, "light-years from any recognized civilzation", where on earth does that put me then? Beyond the outer universe rim? I live in a town so small in Western Australia that even people from WA havn't heard of. I will post my actual intro message separately. Rod. --- In hp_agilent_equipment@..., "Henry Kolesnik" <kolesnik@s...> wrote: I'm in Tulsa, OK..miles from the California border and light-years from any recognizedcivilzation. ----------- Yahoo! Groups Linksof Service. |
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