I am attempting to use two NI-USB-6009 devices for a project, however I can only access one (whichever device was connected to the computer first). Whether the first device, second device or both devices are connected, DAQHWINFO('nidaq') returns the same AdaptorName (nidaq), BoardName (USB-6009) and InstalledBoardId (Dev1).
Using NI's Measurement & Automation Explorer/Test Panels, the two devices show up as 'Dev1' and 'Dev2' and are both accessible. However Matlab returns 'Dev2' as an invalid device ID.
Any assistance in solving this problem would be greatly appreciated.