[quote]is it possible to run two of your PCSGU250 oszilloscopes parallel at the same time on one computer?[/quote] I’m sorry this is not possible.
There is no “addressing” for the PCSGU250 devices.
[quote]I want it to use for SPI debugging, but needs at least three channels: One for chip select trigger, one for clock and one for data.[/quote]This should be possible with the PCSU1000. It has external trigger input.