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Carts for scopes?
Does anybody have a cheat sheet on which carts go with which families of
Tek scopes? I have a 453A, 475A, and 7834, thus need several carts. Any guidance appreciated... Tim N5IIT Washington Council Ernst & Young ________________________________________________________________________ The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. Notice required by law: This e-mail may constitute an advertisement or solicitation under U.S. law, if its primary purpose is to advertise or promote a commercial product or service. You may choose not to receive advertising and promotional messages from Ernst & Young LLP (except for Ernst & Young Online and the ey.com website, which track e-mail preferences through a separate process) at this e-mail address by forwarding this message to no-more-mail@.... If you do so, the sender of this message will be notified promptly, and messages designated as advertising or promotional will be automatically blocked once necessary modifications to our e-mail system have been completed. Our principal postal address is 5 Times Square, New York, NY 10036.Thank you. Ernst & Young LLP |
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Re: Sampling story
Craig Sawyers
Here's an interesting paper on sampling technology from Mark KahrsThat's a great paper - the most complete history of sampling technology I've seen. I was astonished to hear that the limit is now pushing 1THz (1000GHz)! That is a wavelenth of 300um - in the thermal infrared. Hats off to Mark for that paper. The test equipment part of his site on is also worth a visit - he's also a Tek nut. Looking at the acknowlegements, David de Giacomo also helped out on the preparation - he's a Tek and test equipment afficionado too, and good guy: . Thanks for the link, Fred Craig |
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(No subject)
Dave Henderson
Phil
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Can you handle large email attachments? I have a schematic but it will be several MB in size..PDF Dave l Sittner wrote: This morning I discovered that me trusty PS503A is inoperative. Does anyone have a PDF schematic that they are willing to share? |
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Re: Digest Number 1029
Don Mathis
I have a TEK 485 that is beautiful. It was used at Bell Labs.
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However, I've been told that it needs the HV part 152-0509-00 and possibly a fan. I can't find the HV part. I checked with Sphere in Canada. Rats! Don Mathis Atlanta, Georgia 770-921-9555 --- Original Message ---and use for amateur radio repairs. I see many up for sale on eBay andwould welcome any advice on which I should consider, and which shouldbe avoided due to common problems, or inavailability of parts.I would like to spend up to $200, but would possibly consider goingas high as $350 if there is a compelling reason to do so. Thanks inadvance for your advice and counsel.that they want to sell. Does anyone know of a source for one?sale at a very reasonable price.They contain very few "custom" parts inside. Manuals, probes and parts are easily found just because of the sheer numbers of them built. As scopes go they are relatively easy to work on and trouble shoot if you have to. these can be had for under $200 and the plug-ins go very cheaply as well. They are bigger. much heavier, But the added flexibility of having over 50 different plug-ins to choose from gives you the ability to upgrade for special applications over time. Again Manuals and Parts are pretty available and use and wouldfor amateur radio repairs. I see many up for sale on eBay bewelcome any advice on which I should consider, and which should I wouldavoided due to common problems, or inavailability of parts. as highlike to spend up to $200, but would possibly consider going advanceas $350 if there is a compelling reason to do so. Thanks in Pay attention to any local ham radio swap meets, electronic surplusfor your advice and counsel. stores, or Ebay as a last resort (can you tell I believe in supporting local efforts first?) ;-) 'scope, or if a luggable is more your style. In the case of the benchtop systems, the 7000 series is probably still one of the best buys around. Tek made them for over two decades; Mainframes and plug-ins are still pretty widely available, and they're one of the most versatile 'scope series ever to hit the industry. vertical. or 7B85 timebase, 7A26 vertical (it's good up to 250MHz). may well exceed your stated price point. 7904A mainframes, 7B92A AND 7B85 timebases, 7A24 vertical (50 ohm inputs, suggest using a FET probe), 7A26 (you can still use them in the higher-bandwidth mainframes) for high-impedance (1M-ohm) input. The 7A24 goes up to 400MHz, and you can also try for a 7A29. 7A29 vertical for high-frequency signals, 7A24 or 7A26 for lower-end stuff. the CRTs are very susceptible to damage (burn-in and other nastiness). Unless you have an explicit need for an analog storage 'scope, it is probably best to avoid them. CRT fragility problems. This would include units like the 468, many of the 11000 series, the DSA600 series, and pretty much everything that comes after it. and 485 series. The 475A will go up to 250MHz. I should also mention that the 460 and 470 series were widely used as field-service 'scopes by many a computer tech in the late 70's through the early-to-mid 80's. Your price point should work for pretty much anything in this series with the possible exception of a 485, or a mint-condition specimen of the other series. and use wouldfor amateur radio repairs. I see many up for sale on eBay and bewelcome any advice on which I should consider, and which should I wouldavoided due to common problems, or inavailability of parts. as highlike to spend up to $200, but would possibly consider going advanceas $350 if there is a compelling reason to do so. Thanks in equipped withfor your advice and counsel. surreal ports?"of Service. of Tek scopes & have quite a good selection of test equipment totest functionality & calibrate them. Anytime I put a scope I'vefixed & calibrated up on eBay, I stand behind it 100%. Some scopesI've sold have had some problems that wasn't worth me monkeying aroundwith it, but I note the problems clearly and sell those scopes as-isor as parts units. I, like Gary, am in it for the hobby aspect offixing up a non-working scope that someone can use. I cannot justifyit as a money making effort given the time I put into it. So I consider the persons buying my scopes for a reasonable price as fortunatethat someone has taken the effort to fix, clean & calibrate them.because most of my test equipment is out of calibration. But I havecertain key test equipment in cal, a very accurate Fluke DMM, leveledsine generator to 900 Mhz, etc., that I check my other equipmentto. And as far as horizontal timing, there are plenty of tricks I useto check my frequency source, like using WVVB, and zero-beatinglocal AM stations for the higher frequency checks. While arguably notsuper precise, it is good enough for scopes that are only accuratein the 1 to 3% range anyway.am planning onand atmarketing will be fully tested and supplied with a manual least 1Tektronix probe. I have invested heavily in calibration equipment, pulse &function generators, etc. to insure functionality and proper operation (andbecause I like having lots of equipment). I have made whatever repairsI don'tnecessary. I do this more as hobby than a profit center so countThethe many hours some instruments require as part of the price. photos Iprovide are not the grainy, out of focus, non-operating bogus photos thatmany post (and who knows what instrument they were photographing). Mine areguaranteed to be of the actual intrument with actual waveforms displayed onthe instrument. This is a win win situation, I enjoy the troubleshootingwilland refurbishing and want to pass an instrument along that bring asrepairsmuch joy and satisfaction as I have had getting it there. I don't countnecessary. I do this more as hobby than a profit center so photos thatthe many hours some instruments require as part of the price. troubleshootingmany post (and who knows what instrument they were will bring asand refurbishing and want to pass an instrument along that thatmuch joy and satisfaction as I have had getting it there.Hear hear! Me too. I'm congenitally incapable of selling something either I know doesn't work, or that I haven't tested. If I'mselling a sampling system, I show photos of the actual unit showing theresponse to a 30ps rise pulse. If a storage scope, I show a stored trace.Gives you a real buzz to get under the original designer's skin - thethings they did well, and the short cuts taken too. Like the 7B15 I've justchecked over (for my own use) with an electrolytic with the end bulging -because the assembly tech put it in the wrong way round when it was originallybuilt. I've got three 7T11's with quirky habits and three 7S11 withoddities - and I won't put these on eBay until they are fixed.have - rebuilt it stem to stern. Quite daunting when you end up with a V12engine in an awful lot of parts - and boy is that a set of compromises -a superb engine using a GM400 gearbox, with horrendous cost cutting everywhereelse. Death by Lucas, the prince of darkness. Enjoy driving it now in thefine weather - the UK is a total salt belt in the winter.dissapointed when they come in in too good a shape. Like you I also showstorage trace photos also if it's a storage scope.I also restore vintage tube equipment (or valve if you like) My latest beinga 1938 Wurlitzer organ in a church. The way I look at it if you canrepair complex test equipment you can fix anything!for quantitative measurement with all of the good surplus countersand DMM's out there. I use my scopes mainly for displaying electrical/electronicrepairs > necessary. I do this more as hobby than a profit centerso I don't countbogus photos thatwill bring as > much joy and satisfaction as I have had getting it there.something that either I know doesn't work, or that I haven't tested. IfI'm selling a sampling system, I show photos of the actual unit showingthe response to aGives youthings they didchecked over (for my own use) with an electrolytic with the end bulging- because the assembly tech put it in the wrong way round when it was originallybuilt. I've got three 7T11's with quirky habits and three 7S11 withoddities - andI have - rebuiltengine in an awful lot of parts - and boy is that a set of compromises- a superb engineelse. Deaththe fine weather - the UK is a total salt belt in the winter.of Service. to do the risetime on the 067-0587-XX Standardizers for the 7000 Series.Any help will be greatly appreciated. I cannot even find it when I googleit. try to describe it for you:I will call that connector J1. For pinout of J1 I will use convention wherepin #1 is top right pin when facing connector (opposite from wire side)and pin #2 is left of the pin #1, i.e. odd numbered pins are in upper rowand even pins are in lower row of pins.(J2) which mates with P6451 probe pod input signal end and the second connector(J3) is a 2 pin 'comb' which mates with ground connection on probe pod.(a pull ridge with words 'PULL HERE' facing down), pin on the left side willbe called pin #1. Similar numbering convention is used for J3.unreadable. get a two row header with wire-wrap pins and hack it to size to make a 12pin connector. Then, you can use your regular 'comb connector' from logic analyzerand plug wire end to wire-wrap pins. For ground connection you can useregular logic analyzer ground connect and hook it up to pins 2 and 11 of J1.In that way you have adapter you wanted without destroying analyzer's combconnector. readable, so I will send you that thing as an attachement in direct mail.sorry. I logicneed the wiring for Diagnostic Lead Set 012-0556-00 for Tek and I haveanalyzer 1240. Its just 10 wire cable with two connectors last year.searched for hours with no prospect at all. Missed both of them.which I intend to make up myself. Basically, it is a plug and a socketwith a section of circuit board in between about 5/8" long. The socketis the same as in a 7xxx series backplane. And the plug has the same plasticframe as a plug in. So given a scrapper scope and plug-in that can beharvested for the bits, the rest is straightforward - a piece of easily madePCB is all that is needed. I saved the images from one of the auctionsfor reference - let me know if you'd like a copy.(vert -), A13 (trig +) and B13 (trig-) are broken out at the socket with peltola-endedplug for the four signal lines, but the earths on A12, B12 connect through.high frequency 50-ohm terminations on the back. A disc of circuitboard with 4x200 ohm surface mount resistors mounted radially is good toabove 1GHz - or just solder them across (have a look atfor the general concept). The idea is that you can terminate thetrigger cables while looking at the vertical signals and vice versa.it would be just as good to use BNC in any of these positions, and easyto buy GR-BNC adaptors to get to (say) S1 or S2 samplers.to do the Any helprisetime on the 067-0587-XX Standardizers for the 7000 Series. google it.will be greatly appreciated. I cannot even find it when I are handy. I must have come across of that -0655 gig because a had it downas an item to buy, but I thought that was just plain rigid extender (whichis actually 067-0589-00).that brass eyelet termination, per chance, which Tektronix used widelyfor internal cable connectors?last year. one which IMissed both of them. with aintend to make up myself. Basically, it is a plug and a socket socket is thesection of circuit board in between about 5/8" long. The sameplastic frame asas in a 7xxx series backplane. And the plug has the same aharvested forplug in. So given a scrapper scope and plug-in that can be made PCB is allthe bits, the rest is straightforward - a piece of easily forthat is needed. I saved the images from one of the auctions reference -(vert -), A13let me know if you'd like a copy. peltola-ended(trig +) and B13 (trig-) are broken out at the socket with plug for thecables grounded to A12, B12. There is no connection to the with highfour signal lines, but the earths on A12, B12 connect through. board withfrequency 50-ohm terminations on the back. A disc of circuit to above 1GHz -4x200 ohm surface mount resistors mounted radially is good triggeror just solder them across (have a look atforthe general concept). The idea is that you can terminate the cablesit would bewhile looking at the vertical signals and vice versa. to buy GR-BNCjust as good to use BNC in any of these positions, and easy used to do theadaptors to get to (say) S1 or S2 samplers. Any helprisetime on the 067-0587-XX Standardizers for the 7000 Series. I google it.will be greatly appreciated. I cannot even find it when these which Ernest Lans (from Holland) won on eBay on 4/15/03.you with Ernest's email address (assuming that is OK with him) if youneed to reach him.to do the risetime on the 067-0587-XX Standardizers for the 7000 Series.Any help will be greatly appreciated. I cannot even find it when I googleit. the FG501A at BAMA, but it is quite a bit different than the FG501. Thanks, Brucefound the FG501A at BAMA, but it is quite a bit different than the FG501. Thanks, Bruce |
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Re: FG501 Help
I am sending you .pdf file by direct mail.
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Regards Miroslav Pokorni ----- Original Message -----
From: "Bruce" <bruceh@...> To: <TekScopes@...> Sent: Friday, February 27, 2004 9:31 PM Subject: [TekScopes] FG501 Help I am looking for schematics for the FG501 plug in. I have found the |
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Re: 067-0655-00. Photographs attached!
Dennis Tillman
Hi Dan,
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They are EXTREMELY rare. Here are some JPG pictures of one of these which Ernest Lans (from Holland) won on eBay on 4/15/03. This was the only time I ever saw one on eBay. I can provide you with Ernest's email address (assuming that is OK with him) if you need to reach him. Dennis -----Original Message-----
From: Dan Tulloss [mailto:dtulloss@...] Sent: Friday, February 27, 2004 1:37 PM To: tekscopes@... Subject: [TekScopes] 067-0655-00 Does anyone know where I can find this extender. It is used to do the risetime on the 067-0587-XX Standardizers for the 7000 Series. Any help will be greatly appreciated. I cannot even find it when I google it. Thanks, Dan Tulloss Senior Metrologist National Test Equipment, Inc. 760-639-1700 760-639-1799 Fax www.nationaltestequipment.com |
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Re: 067-0655-00
Hello Craig,
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Could you, please, send me pictures of that adapter, if they are handy. I must have come across of that -0655 gig because a had it down as an item to buy, but I thought that was just plain rigid extender (which is actually 067-0589-00). While we are at it, what is 'peltola-ended' termination? Is that brass eyelet termination, per chance, which Tektronix used widely for internal cable connectors? Regards Miroslav Pokorni ----- Original Message -----
From: "Craig Sawyers" <c.sawyers@...> To: <tekscopes@...> Sent: Friday, February 27, 2004 2:30 PM Subject: RE: [TekScopes] 067-0655-00 Pretty rare - I've only seen two come up on eBay during the last year.same as in a 7xxx series backplane. And the plug has the same plastic frame asa plug in. So given a scrapper scope and plug-in that can be harvested forreference - let me know if you'd like a copy.for the general concept). The idea is that you can terminate the triggercables while looking at the vertical signals and vice versa. |
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Re: 067-0655-00
Craig Sawyers
Pretty rare - I've only seen two come up on eBay during the last year.
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Missed both of them. However, it is a fairly straightforward piece of kit - and one which I intend to make up myself. Basically, it is a plug and a socket with a section of circuit board in between about 5/8" long. The socket is the same as in a 7xxx series backplane. And the plug has the same plastic frame as a plug in. So given a scrapper scope and plug-in that can be harvested for the bits, the rest is straightforward - a piece of easily made PCB is all that is needed. I saved the images from one of the auctions for reference - let me know if you'd like a copy. The main thing that has to be done is that A11 (vert +), B11 (vert -), A13 (trig +) and B13 (trig-) are broken out at the socket with peltola-ended cables grounded to A12, B12. There is no connection to the plug for the four signal lines, but the earths on A12, B12 connect through. There is also two peltola sockets mounted on the plug end, with high frequency 50-ohm terminations on the back. A disc of circuit board with 4x200 ohm surface mount resistors mounted radially is good to above 1GHz - or just solder them across (have a look at for the general concept). The idea is that you can terminate the trigger cables while looking at the vertical signals and vice versa. There is also a pair of rare peltola-GR adaptors, but frankly it would be just as good to use BNC in any of these positions, and easy to buy GR-BNC adaptors to get to (say) S1 or S2 samplers. Hope that helps. Craig Does anyone know where I can find this extender. It is used to do the |
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Re: Diagnostic Lead Set 012-0556-00
I can not find the picture, but I have that adapter and will try to describe
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it for you: One end is a 12 pin, 100 mil pitch, two row header connector; I will call that connector J1. For pinout of J1 I will use convention where pin #1 is top right pin when facing connector (opposite from wire side) and pin #2 is left of the pin #1, i.e. odd numbered pins are in upper row and even pins are in lower row of pins. The other side of this adapter consists of one 10 pin 'comb' (J2) which mates with P6451 probe pod input signal end and the second connector (J3) is a 2 pin 'comb' which mates with ground connection on probe pod. If you place J2 to face you and '012-0556-00' label is on top (a pull ridge with words 'PULL HERE' facing down), pin on the left side will be called pin #1. Similar numbering convention is used for J3. A table processed by Microsoft's seamless office suite rendered unreadable. Probably the most economical way to make that adapter is to get a two row header with wire-wrap pins and hack it to size to make a 12 pin connector. Then, you can use your regular 'comb connector' from logic analyzer and plug wire end to wire-wrap pins. For ground connection you can use regular logic analyzer ground connect and hook it up to pins 2 and 11 of J1. In that way you have adapter you wanted without destroying analyzer's comb connector. Dear and omniscient Microsoft screwed up tabs and table is not readable, so I will send you that thing as an attachement in direct mail. Regards Miroslav Pokorni ----- Original Message -----
From: "bbiandov" <bbiandov@...> To: <TekScopes@...> Sent: Friday, February 27, 2004 12:19 AM Subject: [TekScopes] Diagnostic Lead Set 012-0556-00 Hello, |
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067-0655-00
Does anyone know where I can find this extender. It is used to do the
risetime on the 067-0587-XX Standardizers for the 7000 Series. Any help will be greatly appreciated. I cannot even find it when I google it. Thanks, Dan Tulloss Senior Metrologist National Test Equipment, Inc. 760-639-1700 760-639-1799 Fax www.nationaltestequipment.com |
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Re: Recommendations?
Oddly enough, I enjoy the fixer uppers the best! I am almost dissapointed
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when they come in in too good a shape. Like you I also show storage trace photos also if it's a storage scope. It helps me to develop and refine my troubleshooting chops. I also restore vintage tube equipment (or valve if you like) My latest being a 1938 Wurlitzer organ in a church. The way I look at it if you can repair complex test equipment you can fix anything! What I don't understand is why people still use analog o'scopes for quantitative measurement with all of the good surplus counters and DMM's out there. I use my scopes mainly for displaying electrical/electronic anomolies. -----Original Message-----
From: Craig Sawyers [mailto:c.sawyers@...] Sent: Friday, February 27, 2004 12:11 PM To: tekscopes@...; Bruce Lane Subject: RE: [TekScopes] Recommendations? > because I like having lots of equipment). I have made whatever repairs > necessary. I do this more as hobby than a profit center so I don't count > the many hours some instruments require as part of the price. > The photos I > provide are not the grainy, out of focus, non-operating bogus photos that > many post (and who knows what instrument they were > photographing). Mine are > guaranteed to be of the actual intrument with actual waveforms > displayed on > the instrument. This is a win win situation, I enjoy the troubleshooting > and refurbishing and want to pass an instrument along that will bring as > much joy and satisfaction as I have had getting it there. Hear hear! Me too. I'm congenitally incapable of selling something that either I know doesn't work, or that I haven't tested. If I'm selling a sampling system, I show photos of the actual unit showing the response to a 30ps rise pulse. If a storage scope, I show a stored trace. This isn't a business for me - I actually *enjoy* fixing things. Gives you a real buzz to get under the original designer's skin - the things they did well, and the short cuts taken too. Like the 7B15 I've just checked over (for my own use) with an electrolytic with the end bulging - because the assembly tech put it in the wrong way round when it was originally built. I've got three 7T11's with quirky habits and three 7S11 with oddities - and I won't put these on eBay until they are fixed. Did the same process with an old Jaguar V12 saloon (sedan) I have - rebuilt it stem to stern. Quite daunting when you end up with a V12 engine in an awful lot of parts - and boy is that a set of compromises - a superb engine using a GM400 gearbox, with horrendous cost cutting everywhere else. Death by Lucas, the prince of darkness. Enjoy driving it now in the fine weather - the UK is a total salt belt in the winter. Craig Yahoo! Groups Sponsor ADVERTISEMENT ---------------------------------------------------------------------------- -- Yahoo! Groups Links a.. To visit your group on the web, go to: b.. To unsubscribe from this group, send an email to: TekScopes-unsubscribe@... c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. |
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GR847 connector
Bill Smith
Anyone got an extra GR874 connector? I need one for
my Tektronix Type 106 Square Wave Generator. I need the one with the BNC connector on the opposite end of the GR874 connector. Thanks, Bill ===== Bill Smith KO4NR __________________________________ Do you Yahoo!? Get better spam protection with Yahoo! Mail. |
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Re: Recommendations?
Craig Sawyers
because I like having lots of equipment). I have made whatever repairsHear hear! Me too. I'm congenitally incapable of selling something that either I know doesn't work, or that I haven't tested. If I'm selling a sampling system, I show photos of the actual unit showing the response to a 30ps rise pulse. If a storage scope, I show a stored trace. This isn't a business for me - I actually *enjoy* fixing things. Gives you a real buzz to get under the original designer's skin - the things they did well, and the short cuts taken too. Like the 7B15 I've just checked over (for my own use) with an electrolytic with the end bulging - because the assembly tech put it in the wrong way round when it was originally built. I've got three 7T11's with quirky habits and three 7S11 with oddities - and I won't put these on eBay until they are fixed. Did the same process with an old Jaguar V12 saloon (sedan) I have - rebuilt it stem to stern. Quite daunting when you end up with a V12 engine in an awful lot of parts - and boy is that a set of compromises - a superb engine using a GM400 gearbox, with horrendous cost cutting everywhere else. Death by Lucas, the prince of darkness. Enjoy driving it now in the fine weather - the UK is a total salt belt in the winter. Craig |
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Re: Recommendations?
Jeff W
I have the same outlook as Gary. I have bought & sold a number of
Tek scopes & have quite a good selection of test equipment to test functionality & calibrate them. Anytime I put a scope I've fixed & calibrated up on eBay, I stand behind it 100%. Some scopes I've sold have had some problems that wasn't worth me monkeying around with it, but I note the problems clearly and sell those scopes as-is or as parts units. I, like Gary, am in it for the hobby aspect of fixing up a non-working scope that someone can use. I cannot justify it as a money making effort given the time I put into it. So I consider the persons buying my scopes for a reasonable price as fortunate that someone has taken the effort to fix, clean & calibrate them. Of course, I cannot sell my items as being "in calibration" because most of my test equipment is out of calibration. But I have certain key test equipment in cal, a very accurate Fluke DMM, leveled sine generator to 900 Mhz, etc., that I check my other equipment to. And as far as horizontal timing, there are plenty of tricks I use to check my frequency source, like using WVVB, and zero-beating local AM stations for the higher frequency checks. While arguably not super precise, it is good enough for scopes that are only accurate in the 1 to 3% range anyway. Jeff "Gary Allsebrook" <regman10@c...> wrote: Although there are many such vendors on eBay, the scopes I amplanning on marketing will be fully tested and supplied with a manual and atleast 1 Tektronix probe. I have invested heavily in calibration equipment,pulse & function generators, etc. to insure functionality and properoperation (and because I like having lots of equipment). I have made whateverrepairs necessary. I do this more as hobby than a profit center so I don'tcount the many hours some instruments require as part of the price. Thephotos I provide are not the grainy, out of focus, non-operating bogusphotos that many post (and who knows what instrument they were photographing).Mine are guaranteed to be of the actual intrument with actual waveformsdisplayed on the instrument. This is a win win situation, I enjoy thetroubleshooting and refurbishing and want to pass an instrument along that willbring as much joy and satisfaction as I have had getting it there. |
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Re: Recommendations?
Although there are many such vendors on eBay, the scopes I am planning on
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marketing will be fully tested and supplied with a manual and at least 1 Tektronix probe. I have invested heavily in calibration equipment, pulse & function generators, etc. to insure functionality and proper operation (and because I like having lots of equipment). I have made whatever repairs necessary. I do this more as hobby than a profit center so I don't count the many hours some instruments require as part of the price. The photos I provide are not the grainy, out of focus, non-operating bogus photos that many post (and who knows what instrument they were photographing). Mine are guaranteed to be of the actual intrument with actual waveforms displayed on the instrument. This is a win win situation, I enjoy the troubleshooting and refurbishing and want to pass an instrument along that will bring as much joy and satisfaction as I have had getting it there. Right now I have a variety of scopes in inventory: 453A, 465, 465B, 466, 475, 561B(x2), 647A and an OS 245P/U. For my personal use I have a 7603, 465B/DM44, 335 and a 323. I am accumulating a variety of TM series modules as well and may release some for sale later this year. -----Original Message-----
From: jbarnes [mailto:jbarnes@...] Sent: Friday, February 27, 2004 9:14 AM To: tekscopes@...; Bruce Lane Subject: Re: [TekScopes] Recommendations? I would second Bruce's comments on a local purchase. It is very good on your first scope to be able to play before you buy. You can make sure that tube is good etc. A dealer selling a $200.00 scope on ebay can not afford to spend much more time than plugging it in and seeing if there is is a trace. To properly check scope take around a hour, to verify the calibration much longer. Try and find a local source for your first scope. Remember you need a scope to fix a scope !!! Regards, John ---------- Original Message ---------------------------------- From: "Bruce Lane" <kyrrin@...> Date: Fri, 27 Feb 2004 07:48:03 -0800 > In that price range, you should be able to do pretty well. Pay attention to any local ham radio swap meets, electronic surplus stores, or Ebay as a last resort (can you tell I believe in supporting local efforts first?) ;-) > > You don't specify if you're looking for a "lab" or benchtop 'scope, or if a luggable is more your style. In the case of the benchtop systems, the 7000 series is probably still one of the best buys around. Tek made them for over two decades; Mainframes and plug-ins are still pretty widely available, and they're one of the most versatile 'scope series ever to hit the industry. > > Benchtops first. > > For signals up to 100MHz: 7603 mainframe, 7B53A timebase, 7A26 vertical. > > For signals up to 200 or so MHz: 7704 or 7704A mainframe, 7B80 or 7B85 timebase, 7A26 vertical (it's good up to 250MHz). > > Keep in mind that, for the following frames and plug-ins, you may well exceed your stated price point. > > For signals up to 400-500MHz: 7854, 7834 (storage), 7904, or 7904A mainframes, 7B92A AND 7B85 timebases, 7A24 vertical (50 ohm inputs, suggest using a FET probe), 7A26 (you can still use them in the higher-bandwidth mainframes) for high-impedance (1M-ohm) input. The 7A24 goes up to 400MHz, and you can also try for a 7A29. > > For signals up to a gig: 7104 mainframe, 7B10 AND 7B15 timebases, 7A29 vertical for high-frequency signals, 7A24 or 7A26 for lower-end stuff. > > Note that, if you get a storage-type frame (such as the 7834), the CRTs are very susceptible to damage (burn-in and other nastiness). Unless you have an explicit need for an analog storage 'scope, it is probably best to avoid them. > > Most digital-type storage 'scopes do not suffer from the same CRT fragility problems. This would include units like the 468, many of the 11000 series, the DSA600 series, and pretty much everything that comes after it. > > For a 'luggable:' It's still pretty hard to beat the 465, 475, and 485 series. The 475A will go up to 250MHz. I should also mention that the 460 and 470 series were widely used as field-service 'scopes by many a computer tech in the late 70's through the early-to-mid 80's. Your price point should work for pretty much anything in this series with the possible exception of a 485, or a mint-condition specimen of the other series. > > Happy hunting. > >* REPLY SEPARATOR * > >On 27-Feb-04 at 15:10 John wrote: > >>I am looking for a good reliable used Tek scope to learn on and use >>for amateur radio repairs. I see many up for sale on eBay and would >>welcome any advice on which I should consider, and which should be >>avoided due to common problems, or inavailability of parts. I would >>like to spend up to $200, but would possibly consider going as high >>as $350 if there is a compelling reason to do so. Thanks in advance >>for your advice and counsel. >> >>John >> >> >> >> >>Yahoo! Groups Links >> >> >> > > >-=-=-=-=-=-=-=-=-=-=-=- >Bruce Lane, Owner & Head Hardware Heavy, >Blue Feather Technologies -- >kyrrin (at) bluefeathertech do/t c=o=m >"If Salvador Dali had owned a computer, would it have been equipped with surreal ports?" > > > > > >Yahoo! Groups Links > > > > > > ---------------------------------------------------------------------------- -- Yahoo! Groups Links a.. To visit your group on the web, go to: b.. To unsubscribe from this group, send an email to: TekScopes-unsubscribe@... c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. |
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