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| Test Equipment Anonymous (TEA) group therapy thread |
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| m k:
--- Quote from: Cubdriver on June 30, 2022, 04:33:26 am --- --- Quote from: factory on June 29, 2022, 09:40:35 pm ---I thought you won one of the 180 series SA mainframes, in the last PP auction, it should work in the SA mainframe, just some of the later ones haven't got the scope cal outputs, as they were made long after the scope modules became obsolete. I'm I the only one on here with some 180 scopes in my collection? David --- End quote --- I have a 181 here. Lab Cat looking none too pleased with the poor probe compensation: -Pat --- End quote --- "Ok, I'm ready" - after too long "Really funny, Pat" |
| m k:
--- Quote from: bd139 on June 29, 2022, 06:15:32 pm --- --- Quote from: scl on June 29, 2022, 04:37:56 pm --- --- Quote from: bd139 on June 29, 2022, 01:37:44 pm ---More 465B shenanigans. So I figured I'd just do a short check on the IC and see if it was pin specific. Well it was. Only the A3 line pin 4 was short to ground which is the CH1 select line. (snip) --- End quote --- 74S287A looks to have the same pinout, and I see a datasheet claiming 30ns. Maybe also look at N82S129 and AM27S21. I don't see any of those in my parts pile, and with postage from the US you are probably still better off finding one in the UK. But, if you can't, I will take another look. If did find one I could program it here too. --- End quote --- Thanks for suggestions. Look at those and they are a good match. But again as always I don't have the programming capability available and that will cost more money and time than just buying the part. --- End quote --- Just in case of emergency. The thing is that they don't really need a programmer since they are field programmable. Somebody here also have recent experience with titanium-tungsten PROMs, Specmaster came in mind. If memory serves you put address on, short selected bit to down, rise Vcc to >10V and tap chip enable, and it will burn the selected titanium-tungsten fuse and bit will become high. Then just repeat few times. |
| bd139:
--- Quote from: Vince on June 30, 2022, 09:12:41 am ---Good morning TEA !!! Overcast and rainy here, just woke up. Let's see what's been going on while I was sleeping... Oh, networks again ! :-DD Networks will never exterminate removable media, doesn't make sense, two different things for different use cases and people. You IT nerds need to realize most people aren't like you and never will. Most people are IT illiterate, including me to a big extent, because I don't give a fuck about computers any more and networks are way too complex and a chore to set up and maintain and fix. I can't do it, never mind my mum or the average Joe in the street. If anything, removable media is the only thing that is simple (and cheap enough) enough to use yet gets the job done, for the vast majority. No need to be an IT nerd to use it, just shove your USB stick into any USB port and drag and drop your files. Most (still, not all) people can do it. As for the internet, it's just a joke, we are in 2022 and even in western country like France there are still millions of people that still don't have a working ADSL link, their internet is unusable. Telling these people they need to rely on that to move data around is just such a laugh it's hard to find words to express it. Yes, all these people have been promised high speed internet in every single house for.. 20 years now. So they know it will never happen, because IT operators just don't give a fuck a bout them. Fiber in big city centers, and dial-up for rural areas. Don't like it ? Well sucks to be you ! I would rather slit my wrists right now than having to rely on networks and be deprived of removable media. Saying networks will kill every removable media on the planet is like saying ari liners will make all cars disappear or that paper and pencil will disappear because tablets are so much cooler, or that fridges will all be connected to the internet.. I heard that 20 years ago, still waiting for that (not really, don't want that crap). In 20 years from now there will still be USB sticks for sale, or whatever removable media replacing it, and your average joe still won't be an IT nerd that understand and can design and configure and maintain and fix it's own networks at home, not even close. People don't even back up their data, they leave all the baby pictures in their freaking smartphone, that they throw in the ocean at the beach, or in the toilet, or drop on the ground... and you expect them to study networks and build one for themselves at home ? Yeah right... :palm: Have a good day all ! :-DD --- End quote --- I have to agree with you. All it takes is one fucker with a hedge trimmer to ruin your day. Doesn't matter where you live. |
| Vince:
--- Quote from: TERRA Operative on June 30, 2022, 09:21:04 am --- --- Quote from: bd139 on June 29, 2022, 08:30:05 pm ---Yeah quite frankly fuck floppy disks. They were shit when they came out. Corruption, speed problems, reliability problems, tiny storage. Add 30 years to the problem and now you have mechanical and magnetic degradation to contend with. Note I’m so high tech I had to go round someone’s house the other day and borrow their PC to put a CD-ROM contents on a USB stick. I don’t even have a CD drive now. In fact I didn’t even use floppy disks back in the 90s. Had moved to Zip disks and CDRs. --- End quote --- How'd that Zip click-of-death go for you? :P (I had a parallel Zip drive back in the day, I liked it. I should get one again as it's compatible with the D-series TDS 600 and 700 series scopes ;D ) --- End quote --- Uh really ?! Wow...so you mean the // port can be used not only to print a screen capture, but also to access storage media like a ZIP ?! :o Did I read that right ?! :o So if I can't find a HDD option for my future 784D, no big deal then, I can use a ZIP Drive instead ?! :clap: Definitely want a 'D' then, none of that 784C rubbish ! :-DD >:D Money for the TDS won't be before a long while though, so I better start searching for ZIP drive ASAP, as they must be getting rare by now, and might not even be findable any more by the time I get the TDS ! :scared: Yeah, let's find a ZIP Drive again, will bring back memories !! :D Thank you so much for the info Terra ! All the crap we have been writing on TEA for the past 24 hours FINALLY turned out to lead to something actually useful ! :-DD You really made my day Terra, thanks for the info, I am very surprised but overjoyed by it !! :-+ A HDD would still be good though, as you said it contains not just data but also S/W that give you access to more features... and I doubt that S/W can be accessed/used by the scope if you put it on the // ZIP drive ? Probably not... |
| bd139:
--- Quote from: m k on June 30, 2022, 09:29:09 am --- --- Quote from: bd139 on June 29, 2022, 06:15:32 pm --- --- Quote from: scl on June 29, 2022, 04:37:56 pm --- --- Quote from: bd139 on June 29, 2022, 01:37:44 pm ---More 465B shenanigans. So I figured I'd just do a short check on the IC and see if it was pin specific. Well it was. Only the A3 line pin 4 was short to ground which is the CH1 select line. (snip) --- End quote --- 74S287A looks to have the same pinout, and I see a datasheet claiming 30ns. Maybe also look at N82S129 and AM27S21. I don't see any of those in my parts pile, and with postage from the US you are probably still better off finding one in the UK. But, if you can't, I will take another look. If did find one I could program it here too. --- End quote --- Thanks for suggestions. Look at those and they are a good match. But again as always I don't have the programming capability available and that will cost more money and time than just buying the part. --- End quote --- Just in case of emergency. The thing is that they don't really need a programmer since they are field programmable. Somebody here also have recent experience with titanium-tungsten PROMs, Specmaster came in mind. If memory serves you put address on, short selected bit to down, rise Vcc to >10V and tap chip enable, and it will burn the selected titanium-tungsten fuse and bit will become high. Then just repeat few times. --- End quote --- Yeah aware of that. Unfortunately I can't be arsed to sit there and toggle in and possibly screw up the thing so I'm going to buy the problem away. |
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