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Re: 2 dumb questions
Lynn Lewis
I wish I could help with the power supply problem. I bought a 7704 that
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works great and a 7704A (from Ron Kovac) that has some problems. I know the HV circuit works, however, because the readouts show up. I'm trying to acquire a service manual now. Maybe after I get the book and become familiar, I can help more. -----Original Message-----
From: Richard W. Solomon [mailto:w1ksz@...] Sent: Thursday, January 10, 2002 5:22 PM To: TekScopes@... Subject: RE: [TekScopes] 2 dumb questions My guess is that the 503's and 504's are more portable. I have two 503's and one 5006 (506 on steroids!!). I don't think the 5xx plug-ins fit the 5000 series, but I may be wrong. I understand that the 5000 series had reliability problems. But then I find problems in the 7000 series also. Still trying to fix the 7704A power supply. 73, Dick, W1KSZ -----Original Message----- From: Lynn Lewis [mailto:mrzuzu@...] Sent: Thursday, January 10, 2002 6:14 PM To: TekScopes@yahoogroups. com Subject: [TekScopes] 2 dumb questions I never owned anything made by Tektronix in my life until December. Now I have 6 scopes and a bushel of plugins. I have two questions, the answers to which are probably obvious to you guys but not to me. 1. Why are people paying from $120 to over $200 for TM503's and TM504's but are paying less than $100 for TM506's (of which I got one for $75+S&H)? 2. Will the modules that go into a TM5-whatever also work in a 5000 Series oscilloscope? If not, then why is the 5000 series so popular? I can't figure any other reason anyone would want a 2MHz or 5MHz scope. To unsubscribe from this group, send an email to: TekScopes-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: TekScopes-unsubscribe@... Your use of Yahoo! Groups is subject to |
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Re: 2 dumb questions
Richard W. Solomon
My guess is that the 503's and 504's are more portable. I have two 503's
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and one 5006 (506 on steroids!!). I don't think the 5xx plug-ins fit the 5000 series, but I may be wrong. I understand that the 5000 series had reliability problems. But then I find problems in the 7000 series also. Still trying to fix the 7704A power supply. 73, Dick, W1KSZ -----Original Message-----
From: Lynn Lewis [mailto:mrzuzu@...] Sent: Thursday, January 10, 2002 6:14 PM To: TekScopes@yahoogroups. com Subject: [TekScopes] 2 dumb questions I never owned anything made by Tektronix in my life until December. Now I have 6 scopes and a bushel of plugins. I have two questions, the answers to which are probably obvious to you guys but not to me. 1. Why are people paying from $120 to over $200 for TM503's and TM504's but are paying less than $100 for TM506's (of which I got one for $75+S&H)? 2. Will the modules that go into a TM5-whatever also work in a 5000 Series oscilloscope? If not, then why is the 5000 series so popular? I can't figure any other reason anyone would want a 2MHz or 5MHz scope. To unsubscribe from this group, send an email to: TekScopes-unsubscribe@... Your use of Yahoo! Groups is subject to |
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2 dumb questions
Lynn Lewis
I never owned anything made by Tektronix in my life until December. Now I
have 6 scopes and a bushel of plugins. I have two questions, the answers to which are probably obvious to you guys but not to me. 1. Why are people paying from $120 to over $200 for TM503's and TM504's but are paying less than $100 for TM506's (of which I got one for $75+S&H)? 2. Will the modules that go into a TM5-whatever also work in a 5000 Series oscilloscope? If not, then why is the 5000 series so popular? I can't figure any other reason anyone would want a 2MHz or 5MHz scope. |
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Re: "J" Plugin. 4662 Plotter
Ray Menke
On Thu, Jan 10, 2002 at 12:55:28AM -0800, Stan or Patricia Griffiths wrote:
I think the plotter you are thinking of is the 4662. I have three of those andI have one of those, too, and would like to be able to use it with some of today's pc's running Linux, or even Win98. Anybody know of a program that will handle that? I used to write real neat letters in German using the 4052 or 4054, and then print them out on vellum using the refillable drafting pens. They came out really nice. One year we did a dozen or so Christmas letters using that method. 1981. The TEK 4050 series were really nice, and there was actually quite a bit of software available. Too bad a raster display wasn't quickly developed to take advantage of the existing system. X-Y plotters are much simpler than the 4662 which is a digitalFWIW I produced our wedding invitiations on a 4051, plotting them out on a plotter. I did a Google search a while back on the Tektronix 4662 and saw a reference where someone had replaced part of the electronics so it could be driven with the output of a CAM program...to do something like engraving or cutting styrofoam...can't remember the details. -- Ray Menke |
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Re: "J" Plugin
Stan or Patricia Griffiths
I think the plotter you are thinking of is the 4662. I have three of those and
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my best one is on display at Building 50 on the Tektronix Campus in their "mini-museum" history display. I also have a working 4052 with a few games on it. I liked "Artillery" and my wife's favorite was "Weather War". Another of my favorites was "Tanks". Stan w7ni@... Craig Sawyers wrote: I also remember that Asteroids game for the 4051.FWIW I produced our wedding invitiations on a 4051, plotting them out on a |
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Re: "J" Plugin
Craig Sawyers
I also remember that Asteroids game for the 4051.FWIW I produced our wedding invitiations on a 4051, plotting them out on a Tek x-y plotter - I forget the type number of this unit. However, that too was pretty exotic stuff for 1978! If I close my eyes I can hear the whirr of the cassette mechanism on the front of the 4051. As for lunar lander (haven't thought about that for decades!), when the 4052 came out the program was unusable. The computer was so much faster than the 4051 the trajectory took about 0.2 seconds - all you saw was a flash across the screen, then the landscape redrew for the next go. Craig |
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Re: 4S1/2!?!?!?
Stan or Patricia Griffiths
The 661 is the same physical size as a 545A. There is a picture of one on
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page 337 of my book. Stan w7ni@... Michael Dunn wrote: At 12:53 PM -0800 2002/1/9, Jim Reese wrote:The 4S1 and 4S2 plugins are used with the 661 scopeThat must be a massive mainframe, to take TWO of those plug-ins! |
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Re: 4S1/2!?!?!?
Stan or Patricia Griffiths
Hi Michael,
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Those are vertical amplifiers for the 661 sampling scope. The time bases for the 661 had numbers like 5T1, 5T1A, and 5T3. In fact, those three were the only timebases ever made for the 661. Two other vertical plugins were made, however: the 4S2A and the 4S3. The 4S3 requires two P6038 active sampling probes to work. The sampling diodes were matched sets of 4 used in bridge configuration. They were Tek-made GaAs and there was a bridge of 4 for each channel. The 4S1 and 4S2 used different diode sets. I think the 4S2A used yet a third different set and the 4S3 had the sampling diodes located in the P6038 probes and were different even yet. (P6038's were also used with the 3S3. 4S1 sampling diodes were the same as those used in the 3S76.) If you don't have the rest of the system, those plugins are pretty useless. Even then, they might be useless. I have three 661's but none of them have been turned on by me yet. I suspect they are all badly broken as are probably 90% of all 661 systems in the world today. I have some interest in those plugins because they just MIGHT have a good diode set in one of the channels which I think is going to be the hardest piece to find when I try to get one of my systems up and running. So, I would be willing to do some trading with you if your demands are not above my theshold of pain . . . Do these plugins HAVE sampling diodes in them and what are the serial numbers of the different units you have? Stan w7ni@... Michael Dunn wrote: I just came across some 4S1s and 4S2s!!! Dual-channel sampler |
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Re: "J" Plugin
Dean,
Very excellent idea about the two hole 7K plugin portable scope. The more I think about it, the better I like it! I remember a lunar lander game for the 4081 workstation which I played while on a group tour of the Wilsonville facility. The 4081 display was large for the time (19" diagonal?), and had storage plus "write-through" capability. The game scenery was written first in storage mode, then the animated bits (the lander and main engine and maneuvering thrusters, and even the dust the engines kicked up when it was near the surface!) were vectored using write-through. Control was via a joystick, which at the time was pretty exotic. The game and animation worked very, very smoothly with all the proper ballistics (remember this was about 1976 or so). The rest of you may remember the 4081 as the display often used for computer screen closeups on the "Battlestar Galactica" TV show. Can't remember if the workstation was ever shown as part of the set, but the display write-through and minicomputer speed made a pretty effective 'tactical sensor display'. I also remember that Asteroids game for the 4051. Did you also get the tape (remember those clunky 3M tape cartridges?) with the electronic music programs on it? Played via the "beeper", with some songs in chords! Ragtime was particularly effective. I remember being astonished at how good it actually sounded. Don |
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Re: 4S1/2!?!?!?
The 4S1 and 4S2 plugins are used with the 661 scope
mainframe along with a 5T1 or 5T2 time base. I believe this was one of Teks first attempts at sampling technology. I think I have a scope or two and some plugs if you or anyone else is interested in one for their collection. Jim Reese --- Michael Dunn <mdunn@...> wrote: I just came across some 4S1s and 4S2s!!! __________________________________________________ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! |
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Re: "J" Plugin
deanhuster
Playing with the 4051 was fun. I remember the standard game
was "Lunar Lander". Then the 4052 and 4054 came out and Lunar Lander became worthless because they were so much faster that all you could do was crash the lander. One of our reps got hold of a game ... I think it was something like "Asteroids" or some other thing and to give it speed, it accessed microcode rather than Basic. My understanding was that the program wasn't to be given to customers for then they would expect the blazing speed increase to be standard stuff for the machine. And as I recall, it did stuff with the CRT intensity that was hard on the phosphor. The 4054, besides having the bigger screen, also had the dual-color capability for moving objects around before placing them didn't it? Or was that the 4085 or whatever it was that was a desk-sized unit? I thought that Tek missed the boat on several occasions and I suppose that some of them were because of inter-department competition. I'd always thought it to be a good idea to make a 2-plug-in 7K styled like a 465 ... a service scope with plug-in versatility and readout. They did make power supplies for the 1- and letter-series plug-ins so you could used them as stand-alone amplifiers. Don't know why they didn't expand that idea with 7K and 5K unless it would have bit into AM50x sales. Dean |
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Re: "J" Plugin
Stan,
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I that book that you look down at, 'Winning with People', there was a mention of a guy by name Bob Anderson, who was hired from Hughes in 1959 (page 214, right hand column). He started at CRT department, working on general CRTs, but by late 1961 there was a storage tube, and Bob Anderson was associated with it. The storage CRT enabled 564 to be brought to market in 1963. Maybe that is a link between Hughes and Tektronix storage CRT, that we speculated about a while back. Regards Miroslav Pokorni ----- Original Message -----
From: "Stan or Patricia Griffiths" <w7ni@...> To: <TekScopes@...> Sent: Tuesday, January 08, 2002 10:25 PM Subject: Re: [TekScopes] "J" Plugin Hi Don,you have the attention of a few hundred very interested guys . . . More below. . . |
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Re: "J" Plugin
Stan or Patricia Griffiths
Hi Don,
No, I don't think we ever really went into this stuff before and I am sure you have the attention of a few hundred very interested guys . . . More below . . . donlcramer@... wrote: Speaking of prototypes, I am fascinated by them, whether Tek or someoneThe main reason I don't (can't) collect many prototypes is that there are probably about 10 prototypes for every one that actually became a catalog product. I would need ten times the space to store them. Another reason is that they are very poorly documented and usually have some serious flaw tht was worked out later when it advanced to become a real instrument or it was abandoned, complete with flaw. What I am looking for right now is someone to step forward and tell me they want to preserve the 4000 Series technology. I have about 20 instruments I would love to give to that person right now to get them started. I have passed up free gifts of many more 4000 Series because I don't have room to store them. Step right up . . . please . . . I vaguely remember seeing a few prototype products from my days at Tek (lateBoy, I don't remember that one. Another was some pretty densely packed rackwidth size instruments which I wasI was never privvy to that effort either . . . Yet another was the 4054, which was a bit slice version of the 4051/4052Well, the 4054 actually became an official product. It's in the 1982 Tek Catalog and perhaps others. Also something out of the young Digital Service Instruments (DSI) offshoot ofI may have heard of this one . . . And there was an internal tool called the board bucket, a card cageI have seen these. I think they were mostly for the engineers to play with and help them develop new products. Another thing I came across in Tek Labs were 7K scope racks in the style ofI have one of those 7K frames. I think the one I have was used as a "cycle box" to age new plugins prior to calibrating them. I think they used the same basic hardware for lots of in-house jobs. I heard about, but never saw, some higher speed 200 series handhelds. IThat probably happened, but if it did, it was a risky attitude to have. Better Tek should hurt their own sales than have the competitors do it. If this stuff could be built by Tek, they HP could probably do it . . . Of course, now that I'm middle aged, I wish I would have paid betterOne of the prototypes that I have kept is the Tek 537 Storage Scope. It is really a 531A with a special front panel and retrofitted with a Hughes Memoscope CRT. I have heard two 537's were built and I have no idea what happened to the other one. I have a few other prototypes around but mostly I cannabalize them for parts. If you are fond of prototypes, I would consider selling some to you . . . Right now, I have a B Phase 547 that belongs to another guy, who wants to sell it. $100 with a plugin (can't remember which model . . .). Any takers? I can give a better description of the 547, scan a picture, and find out about the plugin, if anyone is interested. Stan w7ni@... |
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Re: "J" Plugin
I was thinking as I wrote the email last night that I might have gotten the
wrong product number (I recollect now the 4052 was a faster 4051, and the 4054 had in addition a bigger screen). Tonight I'm thinking the product name was the 4060 or 4062 (I'm hoping I'm not confusing them with the hardcopy unit numbers, which I think were 46xx). Whatever it was, it was supposed to be a higher performance, new generation product. I'm getting further out on a limb here but I think the programming language used to develop it was TINA. I was told that stood for "This Is Not an Acronym", which was clever enough that I've never forgotten it. I think TINA was internally developed as well. For some reason I kinda miss the early days when everything didn't have to be Microsoft. All this 4000 series talk reminds me of some of the shannigans that went on in Tek Labs when I worked there. The 4K stuff was pretty expensive, so to save on the capital equipment budget, some of the eng techs would build up 4K accessories from premade/tested modules and boards ordered through engineering stock. One would order first the service manual, then from the parts list get all the major pieces. Engineering stock orders were expensed so no approvals were needed (and you'd be surprised how low the internal cost was for board assemblies, etc). The idea was the techs would build up the instrument during slack times so the labour was 'hidden'. I remember building up the ROM Module extender for the 4051. It was called a 'toaster' as it was a metal box with a bunch of slots in the top for plugging in those plastic cased ROM packs (the 4051 backpack only held two I think, hence the need for an expansion box). It was simple and cheap to build from parts, but way expensive if bought from the catalog (I don't think we got a discount internally from completed instruments--that is, we had to budget catalog price). The ROM packs were similarly worth doing "Johnny Cash Style". You'd buy the socketed blank board and plastic case halves, then plug in the appropriate ROM set, and tah-dah, ROM packs for a fraction of the catalog price. One tech in another department actually built a hardcopy unit (remember the dry silver medium?), but it was complicated enough, and took long enough, that it would have been far better to order it intact. One of the scientists built a 4051 for himself though most of it came through the Tek Country Store (where employees purchased surplus) or through engineering stock via "personal purchases" (gawd, I miss those Tek Engineering Stockrooms). This kind of thing was usually triggered by someone having a key part initially, like the jug, for free and then it goes from there. Well, then Apple II computers came along, followed by IBM PCs, and then the Tek 4K desktop computers (and for that matter the DEC pdp11 stuff for those few fortunate groups that could affor them) was history. The Tek stuff and the minicomputers were just too expensive. Stan w7ni@... wrote: "Well, the 4054 actually became an official product. It's in the 1982 Tek Catalog and perhaps others." |
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Re: WTD: Manual for C1002 Camera
Richard W. Solomon
Well, if I don't have the manual, it's not of much use to me. I would take
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$30 for it plus a few bucks for shipping. Assuming you in the CONUS. As for the difference between the two, I have no idea. Regards, Richard S. -----Original Message-----
From: Miroslav Pokorni [mailto:mpokorni2000@...] Sent: Tuesday, January 08, 2002 5:16 AM To: TekScopes@... Subject: Re: [TekScopes] WTD: Manual for C1002 Camera I do not quite understand why do you want to sell that camera if you do not have manual, but if you persist, I might consider buying it. What is your asking price? Do you know what is difference between C1001 and C1002? I just assumed that both have 9 pin D connector for all connections, but maybe that is not so. Regards Miroslav Pokorni ----- Original Message ----- From: Richard W. Solomon To: TekScopes@... Sent: Monday, January 07, 2002 3:27 PM Subject: RE: [TekScopes] WTD: Manual for C1002 Camera I "reverse engineered" the power connector and figured out the pin-out. So far I have not gotten anywhere on getting a manual. If all else fails, I'll probably just put it up for sale and move on to something else. I got this with a lot of Tektronix scope cameras, got two C-50's left and this orphan. Regards, Richard S. -----Original Message----- From: Miroslav Pokorni [mailto:mpokorni2000@...] Sent: Monday, January 07, 2002 12:05 AM To: TekScopes@... Subject: Re: [TekScopes] WTD: Manual for C1002 Camera Hello Dick, I own two of C1001 cameras and do not have any documentation. Perhaps we can share notes. So far, I found out that camera part was made by NEC and puts out an NTSC signal. There are several adapters to mount camera to scope, probably the most useful are: 1.. 016-0248-01 for small screen 7000 series scopes (not 7600, though and 7600 is not recommended; probably image is too big) 2.. 016-0269-03 for 2400 and 'new' 400 (465) 3.. 016-0306-01 for 'old' 400 series (485, 454 etc.) I am looking for #1 adapter while #2 came with one of cameras. I am also looking for documentation and selected accessories; I do not think that original board for PC would be very useful, that might be a pre-ISA slot and even if you have the slot in your PC, drivers might be missing or incompatible with available Wander from Redmond. What I found so far is: 1.. The 9-pin connector takes in 12 V, around 300 mA at pins 1 (positive) and 3 (ground) and signal is on pins 4 (shield/ground) and 5 (video); there are two other pins used which bring in calibration voltages and go only to BNC and two test points. 2.. Someone on this forum suggested to use 'Snappy' for frame capture; that device is available on e-bay for around $10, but manufacturer seems to be out of business. I played a bit with this camera, with limited success. The Snappy has a 'monitor' mode, a quasi real time but that was not good enough to adjust focus, so I set focus to infinite and looked at the picture of nearby window; that way basic camera operation was verified. With great difficulties I managed to focus camera for oscilloscope image. Adjusting light intensity exhausted last shreds of my patience and now camera has to wait. However, the best results I got when TV receiver's video input was used, a real real-time image. I would like to find out how this camera or frame capture board were triggered to capture desired frame. I presume that was done by trailing edge of scope gate signal. Out of curiosity, how much did you pay for your camera? The first one I paid around $70 (with shipping) while second one was mine for $20 (with shipping) and I do not see the difference. The cheaper one came with scope adapter and a cable (9 pin male D connector on both ends) and is higher serial number; it is just as you would expect on e-bay, no rime. I tried this forum for more information or parts, but no luck so far. Let's hope you have better luck. Regards Miroslav Pokorni ----- Original Message ----- From: w1ksz To: TekScopes@... Sent: Wednesday, January 02, 2002 3:45 PM Subject: [TekScopes] WTD: Manual for C1002 Camera I picked up this TEK Video Camera (mounts on Scope face). Does anyone have a manual I can buy or copy ? Or have any info on this camera ? Thanks, Dick, W1KSZ Yahoo! Groups Sponsor ADVERTISEMENT To unsubscribe from this group, send an email to: TekScopes-unsubscribe@... Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. Yahoo! Groups Sponsor ADVERTISEMENT To unsubscribe from this group, send an email to: TekScopes-unsubscribe@... Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. Yahoo! Groups Sponsor ADVERTISEMENT To unsubscribe from this group, send an email to: TekScopes-unsubscribe@... Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. Yahoo! Groups Sponsor ADVERTISEMENT 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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585 oscilloscope
morriso2002
Hi all,
I have been having a bit of fun recently restoring a 585 scope - a late model which had been modified into a de-facto 585A. This instrument is nearly 40 years old and must have really wowed them back in the 1960s when it appeared on the market. It has a distributed vertical amplifier which has no less than 15 push-pull 6DJ8s (including three in the type 82 plugin) and a response which is only about 3 dB down at 100 MHz in my particular example. The timebase performance is not quite as spectacular but with care, I have had a 200 MHz sinewave displayed on the screen. It's really a classic and beautiful machine, in which all the signal circuits, in the mainframe at least, are vacuum tube! Remarkably, there were only a couple of resistors and capacitors which needed replacement. The only tube that had failed was one 5642 HV diode in which the leads had corroded. I was lucky in that the vertical amp balance was pretty good - the manual describes a tedious and rather dangerous procedure for adjusting it which requires a good stock of 6DJ8s, and clip leads connected to the very hefty 100 and 255 volt power supplies. Even though the calibration looks reasonable (not bad either after all that time) I really need a type 84 plugin and a TU-5 pulser to do it properly. If anyone here has either or both of these which they don't need I'd be happy to give them a good home! This 585 will never be my standard bench scope, but I really want to get it into prime condition as an example of one of the great historical classics. Morris |
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Re: WTD: Manual for C1002 Camera
I do not quite understand why do you want to sell that camera if you do not have manual, but if you persist, I might consider buying it. What is your asking price?
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Do you know what is difference between C1001 and C1002? I just assumed that both have 9 pin D connector for all connections, but maybe that is not so. Regards Miroslav Pokorni ----- Original Message -----
From: Richard W. Solomon To: TekScopes@... Sent: Monday, January 07, 2002 3:27 PM Subject: RE: [TekScopes] WTD: Manual for C1002 Camera I "reverse engineered" the power connector and figured out the pin-out. So far I have not gotten anywhere on getting a manual. If all else fails, I'll probably just put it up for sale and move on to something else. I got this with a lot of Tektronix scope cameras, got two C-50's left and this orphan. Regards, Richard S. -----Original Message----- From: Miroslav Pokorni [mailto:mpokorni2000@...] Sent: Monday, January 07, 2002 12:05 AM To: TekScopes@... Subject: Re: [TekScopes] WTD: Manual for C1002 Camera Hello Dick, I own two of C1001 cameras and do not have any documentation. Perhaps we can share notes. So far, I found out that camera part was made by NEC and puts out an NTSC signal. There are several adapters to mount camera to scope, probably the most useful are: 1.. 016-0248-01 for small screen 7000 series scopes (not 7600, though and 7600 is not recommended; probably image is too big) 2.. 016-0269-03 for 2400 and 'new' 400 (465) 3.. 016-0306-01 for 'old' 400 series (485, 454 etc.) I am looking for #1 adapter while #2 came with one of cameras. I am also looking for documentation and selected accessories; I do not think that original board for PC would be very useful, that might be a pre-ISA slot and even if you have the slot in your PC, drivers might be missing or incompatible with available Wander from Redmond. What I found so far is: 1.. The 9-pin connector takes in 12 V, around 300 mA at pins 1 (positive) and 3 (ground) and signal is on pins 4 (shield/ground) and 5 (video); there are two other pins used which bring in calibration voltages and go only to BNC and two test points. 2.. Someone on this forum suggested to use 'Snappy' for frame capture; that device is available on e-bay for around $10, but manufacturer seems to be out of business. I played a bit with this camera, with limited success. The Snappy has a 'monitor' mode, a quasi real time but that was not good enough to adjust focus, so I set focus to infinite and looked at the picture of nearby window; that way basic camera operation was verified. With great difficulties I managed to focus camera for oscilloscope image. Adjusting light intensity exhausted last shreds of my patience and now camera has to wait. However, the best results I got when TV receiver's video input was used, a real real-time image. I would like to find out how this camera or frame capture board were triggered to capture desired frame. I presume that was done by trailing edge of scope gate signal. Out of curiosity, how much did you pay for your camera? The first one I paid around $70 (with shipping) while second one was mine for $20 (with shipping) and I do not see the difference. The cheaper one came with scope adapter and a cable (9 pin male D connector on both ends) and is higher serial number; it is just as you would expect on e-bay, no rime. I tried this forum for more information or parts, but no luck so far. Let's hope you have better luck. Regards Miroslav Pokorni ----- Original Message ----- From: w1ksz To: TekScopes@... Sent: Wednesday, January 02, 2002 3:45 PM Subject: [TekScopes] WTD: Manual for C1002 Camera I picked up this TEK Video Camera (mounts on Scope face). Does anyone have a manual I can buy or copy ? Or have any info on this camera ? Thanks, Dick, W1KSZ Yahoo! Groups Sponsor ADVERTISEMENT To unsubscribe from this group, send an email to: TekScopes-unsubscribe@... Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. Yahoo! Groups Sponsor ADVERTISEMENT To unsubscribe from this group, send an email to: TekScopes-unsubscribe@... Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. Yahoo! Groups Sponsor ADVERTISEMENT 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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Re: "J" Plugin
Hello Don,
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I enjoyed reading what you had to say. It was interesting but sickening at the same time, too. That business of marketing worrying about 'cannibalizing sale of existing line' makes me barf. The scope that you were describing, in a finished form, would probably make a market where those little Sonny/Tektronix jobs were trying to; I did not see many of them around, what probably means they were not selling. Those things always looked like something that I would put in a curio cabinet in my dinning room, not use as a scope. What a line was that, I just checked what was offered in 1987: two 5 MHz jobs and one each 1 MHz and 500 kHz. That was crowded in itself, but the line certainly could stand a 30 MHz scope. As for threat to 400 series, I do not think so. The 400s had a bigger screen, what counts for a lot when you need to see waveform. Besides, I have seen a lot of 465s used as low cost lab scopes, and I think that 453 and 454 enjoyed same popularity in labs, so their market was safe from assault of a 30 MHz pint sized scope. Unfortunately, in most industries the marketing often carried the day and a product line was milked well past its time. Come to think, maybe that was not all that bad, it gave a chance to competition to catch up. I wander if marketing did not know what to propose for new product and 'cannibalizing sale' was a good line to peddle, instead. On the opposite side of action is what some companies in computer industry were doing in early 90s, starting a rumor of a new system generation before the current one was released. Digital (DEC) was doing that job real well, they would paralyze customer by rumors of the next 'killer' performance system and because of that, number of their customers skipped more than one system generation. That mastery of marketing and dabbling in PCs brought them to ruin. I wander if anything got salvaged from that small scope. The CRT would have been something quite useful; I wander if Honeywell's CRTs benefited from 'nanoscope' development. The Honeywell had a CRT that was around 1" diameter and was used for projection to pilot's visor; I understand that Honeywell was a sole source and display systems were selling well. Those bit slice based processors that you are talking about, that is something that I always wanted to work with, but never had a chance. You could make anything with them; throw in microcode (and plumbing to cool it) and you had any computer you can imagine. I must have sinned, God sentenced me to work with Intel and RCA only. Could have been worse, too; at least I avoided Rockwell processor. When we are around next time, before we get to middle age again, you pay better attention and I will try those bit slice jobs. Regards Miroslav Pokorni ----- Original Message -----
From: donlcramer@... To: TekScopes@... Sent: Monday, January 07, 2002 9:37 PM Subject: Re: [TekScopes] "J" Plugin Speaking of prototypes, I am fascinated by them, whether Tek or someone elses'. They represent someone's vision and generally also a lot of effort, so it would be nice if something of it could be saved for history. Homage to those that tried but failed I guess. Unfortunately, I have a rather small house to be collecting this kind of stuff. Hopefully at least the literature will end up with Stan for the future Tek museum. I vaguely remember seeing a few prototype products from my days at Tek (late 70's). One was the "nanoscope", which was shown at a yearly Tek Labs show (where the corporate guys got to see what the lab coats were up to). It was about a third the size of a 200 series handheld (the nanoscope that is, not the show--the show took up the entire Bldg 50 auditorium). It didn't get much further than a rough prototype I believe. And the CRT looked nice. Another was some pretty densely packed rackwidth size instruments which I was told were network analyzers. That was back when I thought a network was something that broadcast TV shows. I would love to hear the story of that effort (it was adjacent the Spectrum Analyzer group, part of Communications Division). Yet another was the 4054, which was a bit slice version of the 4051/4052 family desktop computers. Included a racy fast custom graphics processor, also bit slice based. I understood it had super, super fast hardware with real, real slow software. I was told the dozen prototypes were ultimately bandsawed in the Model Shop. :< Also something out of the young Digital Service Instruments (DSI) offshoot of Portables called the PET, which I think stood for Programmable Electronic Tester. A largish portable scope size enclosure with, I recollect, an 8085 based micro and a bunch of interface cards. As the name implies, you plug this box into your big system of some sort and it exercises it for you and tells you what's wrong. I think the problem was defining what it was going to plug into, and how was the specialized test software to be written? When the group moved, they left behind a bunch of neat prototype mechanical enclosure bits which I used to make G jobs out of. And there was an internal tool called the board bucket, a card cage microprocessor based computer system. I think it started as an engineering tool when the 6800 based 4051 was developed, but became an internal entity all it's own with cards, power supply, firmware, and engineering support. Another thing I came across in Tek Labs were 7K scope racks in the style of TM500. That is, they were nicely built cages with power supplies which took (6?) 7K type plug-ins. They had no CRT related hardware in them. Perhaps these were only made for internal use, and perhaps before the real TM500 series came out. I never saw them with real 7K plugins installed. Only 7K plugin mechanicals with custom hardware (like CRT test electronics) installed. They were real nicely made, heavy and robust mainframes compared to the TM500 equivalents, with regulated supplies in them like 7K scopes. I recollect the plug-in mechanical bits and the blank PCB were available in engineering stock for those which wanted to build something into them. I heard about, but never saw, some higher speed 200 series handhelds. I believe they attained 35MHz but had dismal battery life. The engineer who told me about this (I think he worked on it as a matter of fact) said there was concern in management that that kind of performance would just cannibalize the sales of the 400 series so the program was never pursued seriously. Throughout my time at Tek I would hear variations of this kind of story as a reason promising ideas were stopped. That is, some new idea would hurt sales of existing products, so was stopped. Of course, now that I'm middle aged, I wish I would have paid better attention to all this in the first place. Fortunately, there is this news group now! Ignore me if this was discussed previous to my joining. Hope I'm not being a bore here... Don Yahoo! Groups Sponsor ADVERTISEMENT 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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