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| Gould Ultima / Nicolet Accura DSO software needed. |
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| shakalnokturn:
After loosing many hours on not understanding the requirements to install Win2k (which are basically having a CDROM drive or a BIOS that supports booting from USB) I have a running OS with a Franco-German flavour to it. No additional drivers were needed after all for the Win2k install. The ATI graphics shows some artefacts seeming to confirm that it is defective as previously mentioned. I have old cards around when I get round to that. Next big problem is that when running the Ultima.exe DSO sotware it reports "PCI card not found". I'm guessing that his refers to the heavily reworked card pictured in the previous post. There are no unknown devices showing in the hardware list. I'd expect it to be plug and play but maybe it needs an IRQ allocated in BIOS. I'll check the voltages on the LDO regulators on the DSO interface card but by now chances of repair are starting to look low. |
| shakalnokturn:
I feel as if I'm making some progress in the fault finding although once more I wont get any further without help. I shuffled the PCI cards around a little just in case it was bad contacts: No better. Then went to test the onboard voltages from the LDO regulators, all were good. Because they were socketed and it's in my habit to collect data I went and dumped the socketed IC's on that board. There's a 24LC08 for the AD9884A configuration which I still suppose is there for an independent from Windows oscilloscope display. A PIC16C558 which is likely there for power sequencing and other housekeeping stuff. A 93C46 for the PCI9050 low-cost PCI bus interface identification and configuration. The daughter board not showing up in Windows or being found by the specific software, the PCI9050 was a decent suspect. Browsing through the datasheet confirmed that the board identification should be in the 93C46, comparing the example table in the datasheet and my dump confirmed something was wrong... The 93C46 makes no sense, I wanted to write the identification data given in the datasheet to see if it would show in Windows that way and found out after a few erase re-write attempts that my 93C46 was defective. No 93C46, no identification on the bus no setup for mapping PCI to local address space! So now I'd need the contents of U41 to get any further. https://datasheetspdf.com/pdf-file/540195/PLXTechnology/PCI9050/1 |
| shakalnokturn:
Another small update. Once more thanks to Kowilli's good will I have a dump of the 93C46. Because I had no DIP8 around I programmed a SOP8 version and soldered that to the back of the PCB to try. Still "PCI card not found"... I went and probed the 93C46 during several PC startups, hardware detections and launching the Ultima.exe software. Absolutely no bus activity. The PCI9050 is quite warm to the touch, the hottest IC on the card in fact. I checked the PCI clock input and reset, nothing stuck there. I'll try ordering a new PCI9050 they can be found for 6€ approx. If no better I'll be tempted to give up, this scope is looking like a compilation of defective parts. |
| Kowilli:
There is a way to check the PCI controller. - Download the software from https://www.broadcom.com/products/pcie-switches-bridges/software-dev-kits. - Install it on any computer with PCI slot. - Remove the acquisition card from the Ultima and insert it into the computer, of course not into the switched on PC. - Start the software. The software operation is quite intuitive. The PCI controllers from PLX, then AVAGO and now Boerdcom are automatically recognized. With this software I also read the EEPROM. Here is the description of the software. |
| shakalnokturn:
Thanks once more for your input Kowilli, you've been really helpful on this. (Did you get notification of my help towards your user manual?) I've ordered a spare PCI9050 the scope is reassembled and back in the pile of "to do" until I receive the spare. I'll reopen the case then and try the diagnostics software before replacing the PCI9050. (Note to myself) should also try to remember to take a couple of thermal shots for reference. |
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