[Techtoolslist] WANTED : in-circuit IC tester

[Fabrizio Vasile]

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 at gmail.com>
To: "Technical Tools Mail List" <techtoolslist at 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 at 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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