Hi, maybe you are referring to the Board Walker which is similar to the Microsciences ICT-101? Also th B&K 560 IC tester has a LEARN function in order to memorize how the ICs of a PCB are wired. ----- Original Message ----- From: "Dan Roganti" <ragooman@gmail.com> To: "Technical Tools Mail List" <techtoolslist@flippers.com> Sent: Wednesday, July 31, 2013 6:39 PM Subject: Re: [Techtoolslist] WANTED : in-circuit IC tester
Hello,
I hope you don't mind me chiming in on this thread. I've been subscribed to this list for a while now but I haven't had much chance lately to read everything. But I'm glad I did now.
I haven't seen a portable ICT ike this before. It would be great to find one like this, as I build/repair all sorts of vintage equipment, arcades as well as computers. In the 70s and 80s we had one that was built into a desk, with a control panel, the various test cables, and floppy drives to hold test programs. I still can't remember who made this, but it was very powerful. It would have a library for almost every digital chip for its time, both TTL and CMOS. And then you can customize the tests by writing your own programs. For each circuit card, even when they use the same IC, it might be wired differently - some might have inputs wired to ground - or some outputs loop back to inputs on the same IC. So a standard test vector for a specific IC won't work at all. With the programming capability, you can customize the same library for each and every circuit card. And then you identify that location on the board via the RefDes location. So all you have to do is load the test program for the circuit board and it instantly knows how the board is wired.
I heard someone on this thread might scan the manual for this one ?? I've been tempted to build one myself for many years, I think I may have to pursue this even more now. Hopefully that manual may have schematics to use as a reference. If someone could provide a code dump of the Firmware in the Eproms, I can disassemble the code to see what all they have going on inside that tester - it would make for good reference in case you have to repair one. Because there's a boatload of circuit boards (arcade &computers) between myself and a couple of friends here in the Pittsburgh - that all the time in the world isn't enough to continue fixing them with out some additional test equipment like this.
Dan
On Tue, Jul 30, 2013 at 11:24 AM, Fabrizio Vasile <fabrizio.vasile@gmail.com
wrote:
Thanks for replying. This Fluke device seems more or less like a logic probe and a logic comparator, I have three of them (one HP and two B&K).I meant I was looking for a device that can test TTLs probing their logic functions and not comparing outputs.Yes, I know, this can be done manually with a simple logic probe and a datasheet ( and your brain...) but I was also curious on how these in-circuit testers work and want to try one (like the missed ICT-101).
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