> I don't know if you can do this really, this is > more of a USB thing. Exactly. I have code that finds the PS4000 on the USB tree, and I can read the manufacturer and model of the PS4000. However, I can't read anything that is unique to the unit. > Can you not get the id of the other device > and ...

Hi Ziko, Thanks for your response. I know how to open a device and talk to it. However, the fundamental problem is I do not know which USB hub/port the device is plugged into. Without info about the PS4000's physical location, I cannot associate the PS4000 with the other DAQ device plugged into the ...

Hello Ziko, > You can distinguish between two PS4000s by the > handle and the ps4000GetUnitInfo function. I'm familiar with this function, and I know how to open a channel two two instrument and read from both instrument. The problem I have is that each PS4000 is paired with another IO device that i...

Perhaps if you can't think of a solution, could you at least tell me how the enumerateDevices call ultimately communicates with the USB device to get the serial numbers?

Thanks.

Mitch

I have the following configuration where each PS4000 is paired with another data acquisition device attached to the same hub Laptop USB Port 1 ----> USB Hub --------> DAQ device A --------> PS4000 A Laptop USB Port 2 ----> USB Hub --------> DAQ device B --------> PS4000 B If I use ps4000EnumerateUni...