First I have to say, this is a great thread. Thanks to all contributors.
My WaveMaster 8600A is running fine now, the oscillator adjust did the fix. I really like the scope, for me the user interface is very intuitive. Like it more than my new Keysight.
Now I did the upgrade, with a Gigabyte H97M-D3H board (it is similar to converter's ASRock H97M), CPI Intel i3 4360 (3.7GHz), Windows 7 32-bit, Intel 520 SSD.
Original it had only a Pentium III. Now it is super-fast, a joy to operate, no delays, fast boot/startup.
For my machine, the dxl front panel driver did not work, I had to use the original one of dxl's 2nd zip, and ingowien's filter driver.
But in the device manager, there is a COM3 device, which does not load properly, see image. Is it on the LeCroy PCI Card? The 10-pin connector on top?
My touch panel controller was connected to COM1 of the Intel Pentium III motherboard, and is now connected to COM1 of the H97M board.
Any suggestions about this?
Edit: As You can see, on my acquisition board, all parts for the GPIB interface are populated, except the connector. Is there any use in haveing GPIB present?