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looks exactly like the HP 98257A . Thank you all.

Hi Don, Your statement that Motorola handled I/O well, but Intel didn't, puzzles me. Would you care to elaborate? -Chuck Harris <donbitters@...> wrote:

Two Daves? - got confused. Either way I am grateful.? Holes added to fit 3852A

To be clear, I did not design that board; I fixed a few issues, readied it for production, and made a few boards. The original design was done by David Kuder. -Dave -- Dave McGuire,

Way back when instrument control was the "Thing" in the instrumentation world. The HP controllers were focused on I/O control (Motorola based, PA RISC, etc.) (9825A, 9830A, 9845A, series 9000/200,

Dave I managed to find your SMD version. Only one issue is the hole locations -? other than that I think i will try your design on the 3852A. Will try up to 8 chips. I dont thin you can use more

Yes, it does look to be the same thing. I too have a 3852A by the way. It has never given me trouble, so I've never needed to open it up. -Dave -- Dave McGuire, AK4HZ New

That's not the project I worked on; the one I was involved in is just pure RAM, 7.5MB to fill the address space. No ROM. There was no discrete logic; everything was implemented in a GAL, and it

=== Hi Scott, Other end of R105 goes to a virtual ground inside the IC , seeing ~0V is expected. Current through R105 becomes the reference current for the DAC

Hi, I was also looking into these boards to add the 3rd channel and I found out that all boards on eBay that have more than 3GHz you need to set the SCALE to 4 otherwise it will not count

Tony: The 53131A had three options for the channel 3 input, 3GHz, 5GHz, and 12GHz. I have never seen anything on EBAY over 3GHz installed in a unit. I have seen Chinese Channel 3 boards for 3GHz (a

Dave The Hp 9000 DIO board has the same pin out where it matters and looks like the same board type.

Jared: I was looking at the 53131A specs and the minimum input spec for 100MHz to 2.7GHz is -27dBm and from there to 3Ghz is -21dBm. I guess actual levels would be less than that , but not

Dave Your post helped a lot . I think I found the cloned memory info by Dr. Scott M. Baker : https://www.smbaker.com/a-basic-and-ram-board-for-hp-9000-series-computers Maciej

Ed The connector is part of the machine and the memory card uses PCB edge as connector. There is a raiser inserted in onto the 3852A processor board like the one below. The memory card interfaces

If the CRT has an intact heater & shiny silver getter, it is probably fine. Lack of EHT is more likely to be a problem, especially if there are leaky paper based capacitors in the EHT circuit, or a

Hi Tom In the folder 07 Recent uploads it is listed as but no to download HP 83620 86340 86350 Synthesized Sweeper Service Manual-HP8360-SeriesComponent-LevelServiceManualVol1&2 Kind

One more generic question: up to now I have never seen any evidence that the CRT is working, if I get to the point of having the whole circutry working again and I discover that the CRT is not

SER is 3305A00996 Don't know if that helps, Michel [email protected]> a écrit :

Hi David, I saw that DIMM like socket on Agilent pictures. However my HP8563E is older (don't know the year) and A6 PCB has no such board. Regards, Michel [email protected]> a écrit :