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First post & maybe this is OT and if so please delete it. I am looking for the calibration procedure for a: *Amprobe 37XR-A? DMM.* When I check it on my calibration source, everything is good but the

Great idea. I have the 5004 somewhere. A lot of instruments fall back to signature analysis when troubleshooting gets tough. Sometimes the person writing the manual cant tell you how the circuit

Thanks, I shall look into it, but it'll be a while before I get to do much, working on regularizing the driver structure in a project.? Hmmm, state machine, VHDL, IEEE-488? Harvey

I have a 308, so it's more of an interesting problem that may be of value to others. 308s are probably the cheapest way to get an SA, but it is difficult to find one with all of the probes for

aul, I see Tek 308s are selling for $99 or best offer with free shipping on that infamous site.? Are required accessories the expensive issue, or is it the $99? Bruce, KG6OJI

It's for anything you can structure as an FSA. The tool itself is language agnostic and there are templates for C, C++, java, php, rex, sql, bash, awk and even cobol among others. It is not difficult

Interleaved: I have a few of them, but I ran out of memory in them, as well as they were rather slow.? I went from MEGA to XMEGA, which locked me into a 3.3 volt world.? From there, going to ARM was

Hi, Very interested in updates please. I would like to build one as I have an HP signal generator that I have been unable to debug as I don't have a signature analyser. Thanks, Andrew

So ask them for it, detailing your concerns. Lester B Veenstra? K1YCM M?YCM W8YCM 6Y6Y W8YCM/6Y 6Y8LV (Reformed USNSG CTM1) lester@... 452 Stable Ln Keyser WV 26726 USA GPS: 39.336826 N?

I'm aware of that. I do not see open source documentation on how to build it. I could buy it from them and, when they go out of business or stop supporting it, you're sol. -- Paul Amaranth, GCIH |

Nice to see the responses. I knew everyone would put up their favorite processor, but I use ATMegas a lot in embedded projects. They're cheap, available and convenient. I also have a closet full of

Paul, That is cool, Yes I am interested in updates. I recently purchased a Vector Labs Signature analyser. I have not got around to testing it out. But I have a pile of HP iron that needs repairing.

Already been done: https://vector-labs.com/index_analyzer.html Lester B Veenstra? K1YCM M?YCM W8YCM 6Y6Y W8YCM/6Y 6Y8LV (Reformed USNSG CTM1) lester@... 452 Stable Ln Keyser WV 26726 USA

Hi Paul Indeed interested I'm working on a similar project, though I have a Tek 308 (which I got to verify my own project)Mine is build around a Lattice MachXO2 (in fact a TinyFPGA AX2 board)Display

BTW, I should add that even though I can't find a use for a Signature Analyzer, I do love the concept of S.A. Recently I wire-wrapped a 15-bit LFSR using DTL and early-TTL chips that date from the

Yes, S.A. today is only useful in extremely rare cases. For working on older equipment, you need the known-good signatures, and the ability to create the necessary conditions. With newer equipment,

While I have a 308 and a 5005B, I'd be interested in it for general principles.? Since I have available a decent STM32 infrastructure (still in development, of course), I'd likely duplicate the TTL

Yes, interested in updates. I'd considered a similar project but actually very rarely need a signature analyser - which makes paying inflated prices even less attractive, and making use of someone

At odd moments over the last couple years I've been working on a cheap, easy to build design for a signature analyzer to be more or less comparable to the HP 5004a or Tek 308. I plan on making the

It was a benchtop experiment a few months ago, using a couple of different light bulbs as a Load. Attached is a picture with a "schematic", and below is some text I posted on a forum at the time. If