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Re: repairing a 454
Craig Sawyers
Try Deane Kidd - he seems to have just about everything I've asked him for.
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His e-mail is dektyr@... Good luck Craig anyone have a schematic of the sweep circuit and the board layout for |
Re: Question for the experts
Phil (VA3UX)
Lynn, at least a constant amplitude signal generator, a time-mark generator and perhaps a square wave generator.
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For the constant amplitude sig generator the Tek type 191 goes to 100 Mhz. The Tek "calibration fixture" type 067-0532-01 is another constant amplitude sig generator that covers 65 - 500 Mhz (the thing looks like it was actually made by GR). For the time mark generator either the Tek type 184 or the type 2901. An accurate voltage reference would also be needed but I wouldn't know what to suggest there. Fluke made that sort of thing but I don't know any model numbers. All of the stuff mentioned here can be used with any scope. I'm just a hobbyist so I think the real Tek guys will suggest even more than I have. Phil At 09:20 PM 1/25/2002 -0600, you wrote:
I would like to get to the point where I can calibrate my own |
Question for the experts
Lynn Lewis
I would like to get to the point where I can calibrate my own
oscilloscopes. To keep this question within reasonable limits, let's say (1) analog only and (2) 500MHz or less. Rather than buy all this specialized equipment, some of which seems to go with one scope and not with another, can I buy generic equipment with minimum specifications that I can use to calibrate any scope within those limitations? If yes, what do you recommend? |
Re: Silly prices on eBay
Lynn Lewis
That's not a bad price. Is there any chance the 500 series extender can be
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made to fit a 7000? I had thought about taking a female from a backplane and a male from the back of a junk card and making my own extender. The problem is that the cards don't have print running to all the pins. I remember seeing something, in MCM I think, where you could "paint" new print on a PCB. Has anyone here ever tried that? -----Original Message-----
From: Richard W. Solomon [mailto:w1ksz@...] Sent: Friday, January 25, 2002 5:20 PM To: TekScopes@... Subject: RE: [TekScopes] Silly prices on eBay Not that nuts - they are quite rare and very useful if you do a lot of repair work. Even the 500 series extenders go for $20-50. |
Re: On screen display and other CRT items....
Craig,
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The option is 122C and Tek calls it 'High Voltage Diode Check'. I do not have that option on my 575 but I infer from manual that current capability is less than 1 mA: manual recommends to set display current to 0.01mA/div when using this option. If you really want to convert your 575, I have a write up, but work appears quite messy. The major additions are a transformer and sections to rotary switches and there are also some changes to wiring. Regards Miroslav Pokorni ----- Original Message -----
From: "Craig Sawyers" <c.sawyers@...> To: <TekScopes@...> Sent: Thursday, January 24, 2002 11:00 AM Subject: RE: [TekScopes] On screen display and other CRT items.... doI'm coming in late, so pardon if I'm respondingI think you're thinking of the 575, David. I have one just behind me as I tubes as well (via an add-on box fed from the 175 connector on the backand the tranny sockets on the front). The only limitation for tubes is the200V maximum collector (anode) sweep. Those lucky ones who have an option (I |
Re: On screen display and other CRT items....
I have never heard of 571. But, Dave, I take exception to your leap to 576.
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As a proud owner of a 575 I can not let it go by that you skip mentioning the old transistor tracer stalwart. Regards Miroslav Pokorni ----- Original Message -----
From: "David Wise" <david_wise@...> To: <TekScopes@...> Sent: Thursday, January 24, 2002 10:34 AM Subject: RE: [TekScopes] On screen display and other CRT items.... From: donlcramer@... [mailto:donlcramer@...]I'm coming in late, so pardon if I'm responding |
Re: HP counter - off topic
Hello Craig,
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You might want to consider using a wire-OR of 2-input open collector NANDs, e.g. 74LS38. It is still a kludge but it is only one IC with few wires and a flying resistor. If you place a socket on the circuit board and use one of those 'discrete component adapters' you can do whole thing without cutting original board. While on the subject of strange ICs, does anyone know what are Tek's 155-0015-01 and 155-0038-01; the latter is used in 7M13, a Readout Unit, a plug in that puts text on the screen of 7000 scope. Regards Miroslav Pokorni ----- Original Message -----
From: "Craig Sawyers" <c.sawyers@...> To: <TekScopes@...> Sent: Thursday, January 24, 2002 12:39 AM Subject: [TekScopes] HP counter - off topic Hi Listcrow a little.me ???22 (around $30) on eBay, so it owed me nothing - but I'm a determinedcuss and rarely admit defeat.and confirmed that it was indeed *that* chip (and not the one it was drivingNOR - except that there is no 4-input NOR in fast TTL, just in slow CMOS (andthis chip has to handle a PLL synthesised 100MHz clock). So I transformed theNAND) and 74ALS21 (dual 4-input AND), strung together in place of the original |
Re: Silly prices on eBay
Richard W. Solomon
Not that nuts - they are quite rare and very useful if you do a lot of
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repair work. Even the 500 series extenders go for $20-50. Regards, Dick S. -----Original Message-----
From: Craig Sawyers [mailto:c.sawyers@...] Sent: Friday, January 25, 2002 8:51 AM To: TekScopes@... Subject: [TekScopes] Silly prices on eBay This one really is nuts - 1692324316 - a Tek 7000 series card extender closed at $162.50 after 9 bids. Craig Yahoo! Groups Sponsor ------------------------------------------------------------------------ To unsubscribe from this group, send an email to: TekScopes-unsubscribe@... Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. |
Re: Silly prices on eBay
Lynn Lewis
Tektronix 067-0616-00 Calibration Fixture
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Item # 1689683477 The flexible version sold for $270.96 I'd like to have either one but that's more than I want to pay. -----Original Message-----
From: Craig Sawyers [mailto:c.sawyers@...] Sent: Friday, January 25, 2002 7:51 AM To: TekScopes@... Subject: [TekScopes] Silly prices on eBay This one really is nuts - 1692324316 - a Tek 7000 series card extender closed at $162.50 after 9 bids. |
Re: Silly prices on eBay
John Miles
Those are worth their weight in gold if you need one, though. I paid more
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than that for a set of 492 extender boards and haven't regretted it yet. -- jm ----- Original Message -----
From: "Craig Sawyers" <c.sawyers@...> To: <TekScopes@...> Sent: Friday, January 25, 2002 5:51 AM Subject: [TekScopes] Silly prices on eBay This one really is nuts - 1692324316 - a Tek 7000 series card extender |
Re: Warning - Military Manuals
William de Bruyn
Hello Jim, I would be very interested in some of the manuals I haven't been
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able to aquire, I will look forward to seeing what you have, perhaps we can exchange some information also. William de Bruyn You are right. Many of the military manuals are only |
Re: Warning - Military Manuals
Lynn Lewis
Tektronix Copyright is not a problem. I checked with both the Army and with
Tektronix before I distributed any PDF files. Here are my questions and the answers provided by the Army: * * * * * * * * * * "1 If they are approved for public release, is it okay to access this site?" Response: Yes. "2. If it is not okay to access this site, then where can I get the files since they have been approved for public release?" Response: It is okay to access this site. Those publications that are do not have distribution code A (public release) require a logonid and password to access. "3. Since these documents were authored by the U.S. Army or its agents and they have been approved for public release with unlimited distribution, is there any copyright infringement when the documents are copied and sent to others? Response: Please let us know if you find a publications that indicates copyright. "4. It appears that the creation of the online manuals was interrupted since many manuals do not appear there. Is there another source from which the missing manuals can be obtained? (Or does the fact that they are not there indicate that they were never placed in PDF files?)" Response: They may be Interactive Electronic Technical Manuals(IETM). At this time, they IETMs are not at the ETMs Online website. Other source: National Technical Information Service (NTSI) sells nonclassified/nonrestricted publications to nonDOD persons. 1-800-553-6847 (Sales Office - can check to see if they have pub and what it will cost requestor.) Your interest in electronic technical manuals is greatly appreciated. If future inquiries to LOGSA are necessary on this e-mail, please refer to Control Number 2964, via e-mail address: logetm@... Judith Stephens ETM Configuration Spec DSN 645-9844 Commercial 256 955-9844 * * * * * * * * * * Of course we know that some manuals do indicate a Tektronix copyright but then here are my questions to Tektronix and their responses: * * * * * * * * * * Dear Mr. Lewis: This responds to your recent email message regarding the copying of Tektronix manuals (or corresponding PDF files) for now-discontinued products originally provided to the military. You asked: 1. Have these been placed in the public domain? If yes, is there a notice available to that effect? These manuals (including any corresponding PDF files made by the military) have not been placed in the public domain. However, they may be freely copied and reproduced per the terms set forth below. 2. Is it okay to distribute these freely? If yes, what constraints, disclaimers, or messages would you require to be placed in an ebay auction for the purpose of distributing this PDF file either by way of an email attachment or by way of a CD containing the PDF file. Yes, subject to the following terms and conditions set forth below, Tektronix, Inc. hereby grants you a non-exclusive, royalty-free license and permission to reproduce and distribute, in any form via any medium, copies or partial copies of the Tektronix materials identified in your December 31 email message. This permission and license does not apply to any manual or other publication that is available directly from Tektronix, nor to any manual or other publication for video production products (Grass Valley Group and Profile brand products)or color printer products. All copies must include the copyright notice(s) carried by the copied work(s)- e.g., Copyright 19XX Tektronix, Inc. All rights reserved." Tektronix does not warrant the accuracy or completeness of the information, text, graphics, schematics, parts lists, or other material contained within any manual or other publication that is produced or distributed in accordance with the permission and license set forth above. TEKTRONIX SHALL NOT BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, ANY CONSEQUENTIAL OR INCIDENTAL DAMAGES, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR FOR INFRINGEMENT OF INTELLECTUAL PROPERTY) ARISING OUT OF THE USE OF ANY MANUAL OR OTHER PUBLICATION PRODUCED OR DISTRIBUTED IN ACCORDANCE WITH THE PERMISSION AND LICENSE SET FORTH ABOVE." 3. If it is not okay to download and/or distribute them, how can I get them legally? n/a If you have any further questions about the reproduction of Tektronix manuals, please direct them to me at the email address shown below. John D. Winkelman Tektronix, Inc. Law Department email: john.d.winkelman@... * * * * * * * * * * Based on these two responses, I see no problem with setting up an online library as long as we follow the guidelines given by Mr. Winkelman. Since we have no control over the libraries that currently exist, I suggest that we (wide-band users) make sure all the material available is archived on several home-computers before somebody decides to take the sites down. I think I have all the Tek manuals but I'll check over the weekend to be sure. Question: If we do this on-line library, will it be limited to Tektronix? |
2246 parts needed
Charles Johnson
Hi All,
I have a 2246 with a bad input buffer amp module on CH.1 The service manual says the Tek part number is 165-2154-00. But the modules themselves have 165-2232-00 printed on them. The modules are clearly original, and factory installed. Anyway this is the part I need. Tek says they are stock out and no longer producing. It looks like I will have to obtain one from someone who has a junk 2246. Is there anybody that can help me here? Thanks in advance. Chuck Johnson |
Re: On screen display and other CRT items....
Craig Sawyers
Hi Stan
The 575 option you are thinking of is called "Mod 122C".I *thought* it had a 2 and a 1 in it somewhere! I have one.That comes as no surprise whatever ;-) On another topic, I was picking up a piece of AVO test gear this morning for a guy I know quite well, and we were talking about 570's. Apparently a friend of his picked one up at a hamfest in October for (wait for it...) ?10!!!!! The guy selling it clearly didn't know what it was, or its rarity. Although I too got a mini bargain today on eBay - the capacitance standardizers for the 500 series scope plug ins - for $5 each. Cheers Craig |
Re: On screen display and other CRT items....
Stan or Patricia Griffiths
Hi Craig,
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The 575 option you are thinking of is called "Mod 122C". I have one. Stan w7ni@... Craig Sawyers wrote: I'm coming in late, so pardon if I'm respondingI think you're thinking of the 575, David. I have one just behind me as I |
Re: On screen display and other CRT items....
Stan or Patricia Griffiths
Hi David,
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I think you are thinking of the 575, not 571. I don't think Tek ever assigned 571 to any instrument. Stan w7ni@... David Wise wrote: From: donlcramer@... [mailto:donlcramer@...]I'm coming in late, so pardon if I'm responding |
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