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Re: Best way to ship a Tek 7904 mainframe?
Hi,
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as far as i know the size limit of USPS shipping to Germany (Europe?) is as follows 2 x width + 2 x height + length < 108" where width and heigth are the smaller dimensions, length the largest. This means you can ship a big 19" rack, if the package doesn't add more than 2" on each side. This is possible using massive styrofoam sheets, not bubble wrap or chips (is too soft). A 7904 should fit, too. Also it should have GLAS written on it in thick letters! Cost of USPS economy parcel post (surface) for a heavy 19" device can be US $ 70, which is a lot cheaper than UPS and Fedex. You have to be patient though, since it takes 4 to 6 weeks to arrive. And some sellers don't like to go to a post office and deliver it there. Maybe you have to share the savings! Hope this helps. Regards Dieter Teuchert tomgootee wrote: Jose, |
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Re: Tek 571 curve tracer
Phil (VA3UX)
At 05:59 AM 1/26/2002 -0800, you wrote:
Yep. I said that and I was WRONG! There it is in my 1993 Tek Catalog. ThisWell don't feel bad. I'd never heard of one either and it seems strange that they would use a 570-series product number in the 1990's. Oh well. Now we all know. Phil Stan |
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Re: Best way to ship a Tek 7904 mainframe?
Jose,
The $295 is not too far off. I do know that UPS is usually a little cheaper than FedEx. I shipped a 7854 from here (Indiana, USA) to Portugal, once, and it cost $255, using UPS, by air. Someone else mentioned Airborne being significantly cheaper than that. I plan to check that out, the next time I ship overseas. I do know that for many items, the US Postal Service (USPS) is often way cheaper than UPS and FedEx (about 1/2?), when shipping overseas by air. But there are some size limits. It's possible to ship asomething like a 475 scope overseas/air via USPS. But I think that may be about the limit. You can check out the shipping prices, etc, at www.ups.com, www.fedex.com, and www.usps.com. The box size can make a large difference in the shipping cost, since they use the larger of weight and "dimensional weight". Obviously, they have to charge for space as well as weight, since there's limited space in an aircraft... (For the 7854, I used a box that was 36x18x18 inches. Using the method below, it arrive in perfect condition.) You mentioned that the scope was already professionally packed. I guess the quality of the packing job would depend on exactly who the professionals were. A heavy instrument, with fragile, protruding front-panel parts, is quite a challenge, when trying to insure that no damage can occur in transit. Foam-in-place MAY be the best way to go. But most individuals don't have access to that, anyway. When I ship large scopes (and I ask for this whenever I'm having one shipped to ME), I always very-securely tape large pieces of relatively thin, very rigid foam-board to the sides of the scope, so that they protrude farther to the front and rear than any of the scope's parts. If you imagine the box being dropped and landing on the front-panel end, it's easy to see how even a thick pad of bubble-wrap could break parts that protrude from the panel. The foam-board method is cheap, quick, and easy, which also helps when I'm requesting it of a seller. Of course, after applying the foam-board, I also wrap the entire scope in my usual 3+ inches of bubble wrap, and then fill any voids with foam peanuts. Good luck with that 7904! Tom Gootee --- In TekScopes@y..., "JOSE V. GAVILA (EB5AGV/EC5AAU)" <eb5agv@c...> wrote: Hello!system but have the _small_ problem of shipping it from USA to Spain. It isalready professionally packaged but quoted price is $295 (by FedEx). Iwonder if there is any other way to send such an item to Spain, withoutincurring in so large expenses. Perhaps some of you have experiences sendingitems overseas?-- 73 EB5AGV / EC5AAU - JOSE V. GAVILA |
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Re: Tek 571 curve tracer
Stan or Patricia Griffiths
Yep. I said that and I was WRONG! There it is in my 1993 Tek Catalog. This
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was a new one on me. I left Tek in 1989 and I suspect this instrument was introduced after I was gone. I've never seen one. Stan w7ni@... "Phil (VA3UX)" wrote: You guys were talking about a type 571 curve tracer a few days back. I |
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Re: Warning - Military Manuals
Stan or Patricia Griffiths
Congratulations Lynn,
You are the second person to get this permission that I know of (I was the first). This is almost exactly the same letter that I got and from the same guy (John Winkleman). I really was not going to publish his name since I did not want him to get buried in copy requests . . . but the cat is out of the bag now and I certainly hope John does not regret doing this for us . . I noticed that John granted you permission to make copies of the documents that you described in your letter to him. You did not tell us what those documents were . . . manuals, I assume . . . Stan w7ni@... Lynn Lewis wrote: Tektronix Copyright is not a problem. I checked with both the Army and withtext missing here. |
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Re: Warning - Military Manuals
Stan or Patricia Griffiths
Hi Jim,
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I think you are way off base on this one, Jim. I have to admit I am not a copyright attorney, but even if you bought a book, you did not buy the copyrights for it. How could buying a piece of equipment grant you the copyrights to its documentation? You probaly got a copy with the equipment and that is what you have . . . ONE copy. That is what copyright protection is all about . . . you DO NOT have the right to make copies. If you buy one copy of a software program, for example, you certainly do not have permission to make and sell more copies of it . . . Same goes for manuals, books, music, artwork, etc, etc. Stan w7ni@... jcastanton wrote: Jim, |
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Re: Warning - Military Manuals
Stan or Patricia Griffiths
jcastanton wrote:
Jim,Hi John, I would recommend caution in making this offer. Virtually ALL Tektronix manuals are copyrighted and in my conversations with a Tek Patent and Copyright Attorney (currently working at Tek), he does not think ANY Tek manuals are in the "public domain" even if the U.S.Government thinks they are. Tek DID grant various branches of the U.S. military permission to copy parts of certain Tek manuals for inclusion in military manuals with the limitation that the copies were for military use only. I have seen a statement to that effect in copies of military manuals that I have seen. It actually says that parts of the info in those manuals is copyrighted and reprinted with permission of Tektronix.. Some people choose to interpret that statement to mean that it is now OK for the world to copy that copyrighted material. When I suggested this to my Tek Copyright Attorney friend, he actually laughed outloud! He certainly does not believe any of Tek's copyrighted material, including manuals, those parts of military manuals copied from Tek by the various branches, Tek catalogs, concepts books, etc are in the public domain, with the possible exception of some stuff done over 50 years ago, which means before 1952. The copyright notice in those military manuals should be taken as a notice that portions of that manual ARE COPYRIGHTED by Tek. Just because Tek recently granted ME permission to copy their obsolete manuals (just like they granted this same permission to the military) does NOT mean that I have the right to grant this permission to you or anyone else. This essentially means that the military does not have the right to grant YOU permission to copy Tek's still copyrighted materials, despite what certain military spokespeople might try to tell you . . . Tek still owns all of this stuff. Having said that, I have been working for a few years to obtain permission from the Tek Legal Department to copy and sell copies of early manuals and other publications. I now have that written permission in my hand in the form of a letter on Tek letterhead from the Tektronix Legal Department. I believe I am the only individual or company to ever obtain such sweeping permission from Tektronix. I plan to start making copies of Tek manuals and other documents on CD ROM in the near future but I also plan to include a copy of the official Tek "Modification Summary" for each instrument whose documentation I offer on CD. It is apparent that Tek does not seem to care much if people copy and distribute obsolete manuals that can no longer be purchased from Tek, even though this violates Tek's copyrights. There is one guy offering the TDS3000 manual on CD ROM on eBay right now and the Tek Attorney seemed very interested in THAT . . . I thinkTek still sells the TDS3000 manuals . . . so this guy could be cutting into Tek's revenue. The other issue of interest is that most sellers of old Tek manuals on CD are using eBay to make their sales. eBay has a very strict policy about selling copyrighted materials on eBay and you can lose your eBay priviliges if they catch you doing it. So, if you are thinking of getting into the business of copying and selling old Tektronix documentation, I suggest you start where I did . . . get permission from the Tektronix Legal Department. If you don't, it amounts to theft of Tek's intellectual property. One guy showed me a copy of a letter he got from a low-level Tektronix Manuals Manager permitting him to make copies. I am sorry, but this permission can only come from Tek's Legal Department. Low level managers simply do not have the authority to bind Tek to agreements like that . . . Stan w7ni@... PS For those of you who own copies of my book about early Tek scopes, take a look on the back side of the first page of the book. There you will find my own copyright statement but, more important, you will see that I received official permission from Tektronix (Legal Department) to use photos of instruments that I cut and pasted from old Tek Catalogs. I have the letter of permission on file, if anyone doubts it. Getting permission is the correct way to do this . . . |
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Re: Question for the experts
Lynn Lewis
Thanks Dieter, I appreciate it.
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From: Dieter Teuchert [mailto:dieter@...] Sent: Saturday, January 26, 2002 2:26 AM To: TekScopes@... Subject: Re: [TekScopes] Question for the experts Lynn, the 7D11 digital delay plugin is very interesting, too. You sometimes see them go at ebay for $ 20. It contains a 500 MHz oszillator phase locked to a good 5 MHz quartz and a complete divider chain down to 1 Hz. You can run this unit with your own +/- 15V and +5V power supply and get all the signals needed to calibrate the timebase of your scopes. I have the service manual, in case you need some schematic. Regards Dieter Teuchert |
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Re: Question for the experts
Lynn,
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the 7D11 digital delay plugin is very interesting, too. You sometimes see them go at ebay for $ 20. It contains a 500 MHz oszillator phase locked to a good 5 MHz quartz and a complete divider chain down to 1 Hz. You can run this unit with your own +/- 15V and +5V power supply and get all the signals needed to calibrate the timebase of your scopes. I have the service manual, in case you need some schematic. Regards Dieter Teuchert Lynn Lewis wrote: I would like to get to the point where I can calibrate my own |
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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 |
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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 |
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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? |
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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. |
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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 |
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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 |
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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 |
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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. |
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