Date
1 - 20 of 44
TM 500 Power Module Tester
|
Marc Lalonde <mlalonde@...>
Hi
toggle quoted message
Show quoted text
i may help french was my natural language ... translator not like expression and translate work by work was not alway good Le convertisseur DC/DC est vraiment "noisy" comme disent les Anglais ->the Dc/Dc was "noisy" like English said et en plus le fusible est .. encore vivant (Comme le canard de Robert !!) -> fuse was still alive just like the duck of Robert (seem to me as inside joke) c'est plus fort que moi, faut toujours que ça fasse papa maman, -> it stonger that me it must fit like mon/dad (that a common "explicit" french expression ) Et voila le biniou au travail sur un PS503 bien mal en point : -> that the PS503 restored from bad shape Best Regard Marc Lalonde Alphatronique inc. Stefan Trethan wrote:
|
|
|
|
kupkagerhard <ghm1@...>
I am searching a TM500 Power Module Tester.
Can anyone help? Gerhard |
|
|
|
ditter2
--- In TekScopes@..., "kupkagerhard" <ghm1@...> wrote:
I don't know that such a fixture exists. I worked in the TM500 /5000 design group for a number of years and never saw such a thing. I don't even recall manufacturing ever having one (which would been assigned a 067-xxxx-99 part number.) But I qualify this statement by saying that I started in the group in 1978, and TM500 was introduced in 1973. So there may have been some type of production test fixture used in the early years. When I was there, production frames were tested by loading them up with plug-ins and running them in a burn oven for a few hours. In the engineering area we had a lot of mainframes around with blown plug-in pass transistors resulting from wiring errors in prototype plug-ins. After the second time I wasted a couple of hours troubleshooting a non-existent problem in one of my prototypes when I unknowingly operated it in one of these bad mainframes, I rigged up a simple fixture that allowed quick testing of the transistors with a 577 curve tracer that I always had on my bench. After that, I would usually check out the transistors whenever I grabbed one of the bench mainframes before testing my prototype. - Steve |
|
|
|
teamlarryohio
"Steve" <ditter2@...> wrote:
--- In TekScopes@..., "kupkagerhard" <ghm1@...> wrote:I'll second Steve on that. In the service center we always just hookedI don't know that such a fixture exists. up the 577 with long leads to check the pass transistors. Caps & bridges were like anything else. -ls- |
|
|
|
ikerooney <ikerooney@...>
I don't remember the 067 number off the top of my head, but its primary raison d'etre was phase checks of earlier TM503's 25v AC. I believe FG504's used stacked 25v AC lines and wouldn't work at all. It might have some other later introduced product.
toggle quoted message
Show quoted text
In usual bureaucratic fashion, it was made salable to customers and had a cooked up procedure for power supply loads, series pass checks and a host of other fly-paper checks. If it weren't for the phasing checks, it would have never seen the light of day. Joe Rooney --- In TekScopes@..., larrys@... wrote:
|
|
|
|
kupkagerhard <ghm1@...>
toggle quoted message
Show quoted text
--- In TekScopes@..., "ikerooney" <ikerooney@...> wrote:
|
|
|
|
--- In TekScopes@..., "kupkagerhard" <ghm1@...> wrote:
I built my own a few years back from a blank plug in. Schematics and pic here http://www.hakanh.com/dl/misc/tm5_tf.pdf /Håkan |
|
|
|
ditter2
--- In TekScopes@..., "kupkagerhard" <ghm1@...> wrote:
Well, I go back to my statement that I never saw one while I was at Tek. And I spent a lot of time in the manufacturing area and worked closely with most of the manufacturing engineers in TM500. I suspect they were used in the years before I joined. I know they were not used to test production mainframes from 1978 on, when I was there. The -99 suffix indicates these were not offered for sale to customers, as implied in another member's reply. the -99 suffix, designated "for internal use" could be deployed to field service centers however. Although if the primary reason for using the fixture was to verify transformer connections for phasing, it would not seem to make sense in a service center. This is not something that would change after the product was manufactured, and I suspect transformer failures in the field were rare. Soooooo, given that this tester is very rare (probably less than 10 ever built total) you are probably not going to find one. What specifically are you looking to test in a mainframe? It is interesting that one thing Tek did not test which would be a problem if it were to fail was isolation on the pass transistors. Since these relied on traditional mica insulators with nylon shoulder washers on the mounting screws for insulation (A method I always considered quite questionable BTW), you could have transistor collectors shorted to ground, or insulated with insufficient breakdown isolation. The TM500 power supplies relied on this transistor insulation to allow the outputs to float. The assembly process must have been repeatable enough that this failure mode was extremely rare. - Steve |
|
|
|
ikerooney <ikerooney@...>
Hi Steve,
toggle quoted message
Show quoted text
The TM503 was introduced and the phasing didn't make any difference to, at the time, current plug ins that would be stuffed into it. Products introduced in later years were being stuffed into these unchecked and sometimes out of phase TM503's and didn't work. I thought it was the FG504 requirement, I might be wrong on the stacking issue, could have been a doubling of current available. Joe Rooney --- In TekScopes@..., "Steve" <ditter2@...> wrote:
|
|
|
|
Tek naver made one for sale. There was something called a 067-1201-99 TM500
toggle quoted message
Show quoted text
Power Module Tester and Utility Power Supply that performed some basic tests. There is an 8 page Construction Note from Tek for it that someone (I think it was Brian Henry) posted on the user group. It is titled "TM500 Power Module Tester and Utility Power Supply". You can get some clues to what circuits Tek might have used internally to test their TM500 mainframes by reading this Construction Note. I've only ever seen a picture of the front panel of one of these so they are really rare. The front panel did not appear to be professionally made so I don't believe that what was in the picture was actually in use at Tek. Walter Shawlee (of Sphere Research) made one of his own design to do basic tests on TM500 mainframes but I don't know of any others anywhere. -----Original Message-----
From: kupkagerhard I am searching a TM500 Power Module Tester. Can anyone help? Gerhard |
|
|
|
ikerooney <ikerooney@...>
Hi Dennis,
toggle quoted message
Show quoted text
Although Tek never sold them, I would estimate over 100 were made as at the time, 31 domestic service centers were issued one plus overseas Tek and service providers. Additionally, these non-salable items were "loaned" to big customers that had their own metrology and service capability. I seriously doubt IBM, the DoD and others felt obligated to return them. There were other "goodies" Tek afforded buying customers, pre-announcement loans of new products, sometimes engineering models. The Field Engineers were famous for losing demo's. Really. My personal record was a customer returning a 564B to the Ft Lauderdale Service Center, approximately ten years after it was loaned by an Orlando Sales Engineer, I think it was Motorola or Mod Comp. Joe Rooney --- In TekScopes@..., "Dennis Tillman" <dennis@...> wrote:
|
|
|
|
xsecret@rocketmail.com
The most awesome TM500 test plugin I've ever seen comes from a French guy. Here is the translated URL :
toggle quoted message
Show quoted text
http://translate.google.fr/translate?js=y&prev=_t&hl=en&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fphilippe.demerliac.free.fr%2FTek.htm&sl=fr&tl=en The work he did on this test plugin is just unbelievable. Sam. --- In TekScopes@..., "ikerooney" <ikerooney@...> wrote:
|
|
|
|
ditter2
--- In TekScopes@..., "ikerooney" <ikerooney@...> wrote:
Given the extremely limited utility these "cal fixtures": had, deploying this many was an incredibly stupid decision. But it happened in Tek's peak business years, and most companies, Tek included, succumb to bad business decisions when times are extremely good. The feedback loop is broken. Yea, I really saw that. Although the SEs absolutely hated it, installing the position of a capital demo equipment coordinator was a very smart move. Tek was losing MILLIONS of dollars a year in lost demos. Any many customers who only had a one time need would "loan" a demo for a MONTH or TWO, rather than paying for a rental. I created a small SWPS demo aid for selling current probes. It was to be a "one time build" and as engineering manager, I decided to forgo the documentation to part number it. (which would require about 3 times the engineering hours). After the 3rd time we had to recreate the design for another "one time build" , I bit the bullet and had it documented. We could have developed a full instrument for the man hours wasted in this exercise.
|
|
|
|
stefan_trethan
That's indeed quite some effort. Also the translation is quite good,
apart from a few points I don't quite fully understand: <The DC / DC converter is really "noisy" as the English and filtering is found necessary.> Are the English really that noisy? ;-) <I suspect a naturally fuses sensor and I open it (not without difficulty, I tell myself it's not very practical) and the fuse is more .. still alive (as Robert duck!) Arrrrrrrrrg, the drawer test is failed, and nothing to test, what do I?> Who's Robert Duck? <And voila, a simple trick, I'll still be a gas works, it's stronger than me, it always makes Mom Dad, but right after I'll have the rolls of extenders. I Ponder a little and I'm starting ... > I'd rather not think too much about this one, it's just way too weird..... <Well I test the bagpipes with various drawers and it is a great success, with this thing, I am equipped for winter .... > <And here is the bagpipes at work on a PS503 in a bad way:> And what about the bagpipes all the time? Anyway, thanks for sharing, had a good laugh, and it was interesting as well! ST On Sat, Jul 17, 2010 at 2:59 PM, xsecret@... <yahoo@...> wrote: The most awesome TM500 test plugin I've ever seen comes from a French guy. Here is the translated URL : |
|
|
|
d.seiter@...
I laughed so hard at the English comment; also didn't understand the "food and housing" bit at the top of the page (ok, the food part anyway) Dave ----- Original Message -----
From: "Stefan Trethan" To: TekScopes@... Sent: Saturday, July 17, 2010 11:52:26 AM Subject: Re: [TekScopes] Re: TM 500 Power Module Tester That's indeed quite some effort. Also the translation is quite good, |
|
|
|
Dan Rae
d.seiter@... wrote:
Food = alimentation = power supply I started to correct the page but gave up since there was too much to do :^) Google does it's best! dr |
|
|
|
PA4TIM
I laughed so hard at the English comment; also didn't understand theOK, that's an easy one, food means power supply. If you would translate the dutch word for powersupply you also get food. We feed the modules with current. Fred ----- Original Message ----- |
|
|
|
Mike <mikez11@...>
Generalizing "noise" to mean stochastic voltage or current seems peculiar to technical English; literal translations may only imply sound. So "noisy" sounds routine to us, but perhaps hilarious to his ear (mentally switches to "bruit" and immediately pictures kids banging pots and pans...).
toggle quoted message
Show quoted text
Similarly, one German word for the same thing, which the dictionary translates as "murmering", sounds hilarious to me. Old words adapted for new things. mike --- In TekScopes@..., d.seiter@... wrote:
|
|
|
|
Greg_A <greg.a@...>
Not just noisy, really aggressive...
toggle quoted message
Show quoted text
At 10:52 AM 7/17/2010, you wrote:
|
|
|
|
aobp11 <aodiversen@...>
Then you "should" know the humoristic song of Robert Lamoureux (he was mentioned before). Google his name and canard. The full text is here for instance:
toggle quoted message
Show quoted text
http://board.gladiatus.fr/index.php?page=Thread&threadID=18707 Maybe the English translation is even more humoristic... Albert i may help french was my natural language ...
|
|
|