Hi Jon, You have a HP Signature Analyzer. I don't have a 5006 but I have the 5004 and it's similar. First of all you need to get a list of signatures from a known good unit like the one you're testing. It must be an identical unit, at least the portion of it that you're testing. Most manuafacturers never bothered to provide signatures so you may have to gather your own from a good unit. Close doesn't count with SAs. If the signature isn't *exactly* the same then there is a failure at that node. Do you have the wires on your pod or does it just have sockets? The wires have a small female socket on one end and a large male pin on the other. You can use the small female socket directly on wire wrap pins, header pins and the like or you can use "grabbers" with them. The wires and grabbers from the HP 5001 MicroProcessor Exerciser and the HP 1600, 1601, 1607, 1610 & 1615 logic analyzers will fit. The grabbers are also interchangeable with the ones from the Gould and some other brands of Logic Analyzers. Most of them have a hole with a single male pin inside. The wire pushes onto the pin and the grabbers are similar to the E-Z hooks. You can usually find the wires and grabbers in electronics surplus stores, I got piles of them from SkyCraft in Orlando. The three leads on the pod are for the Start, Stop and Clock Signals. You can select the polarity of each of the three signals. The pod is used to gather the Data signal. After the SA gets the start signal it clocks in the logic level on the data line each time a clock pulse occurs. When the stop pulse occurs it stops reading the data signals. Now it has a string of 1s and 0s. All if does next is too convert that string of 1s and 0s into four hexidecimal characters and displays them. It only needs 16 bits to "fill" the display but remember that the start and stop singals control how many bits it sees so it may get more or less than 16. If it gets more than 16 then it performs a "mod" operation (in reality it just discards the excess bits). If it gets less than 16 it simply inserts leading zeros in the display. It's interesting to note that the 5004 does not use the normal A through F characters for values 10 through 15. Instead it uses "A,C,F,H,P,U". HP says that doing this elimenates the confusion of mistaking b for 6. But B can hardly be mistaken for 6 and now they're using C intead of B for 11 and F instead of C for 13. I wonder what the REAL reason was? I don't have a manual for the SA but the HP 5036 microprocessor training course has a *good* section on it. Frankly it's the only explanation of what a SA does and how it works that I've ever seen. Even the SA manual doesn't tell you much. There ARE some SA links on Spies. I just down loaded a couple of the articles a week or so ago. Joe Rigdon At 01:37 PM 2/22/00 -0500, you wrote:
I finally got my 5006A today and am wondering what I need in order to make use of it. I see that there is mention of the 5006A on spies, but there is not a link. Does anyone have the manual they would be able to scan or copy for me? Also, there are 4 connections with tiny connectors coming out of the "timing pod". What am I suppose to hook up to them? And where do I get male versions of those connectors?
I'm guessing this is all documented somewhere, but I'm not sure where to look. Thanks.
Jon
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