Is there anything that exists in SignalExpress that can be used with PXI-6602 and the PXI-6533? I know that these cards are not natively supported but maybe exemples were written to create SignalExpress Block? Also is the PXI-6733 supported by SignalExpress as well?
I didn't try with the same card as you but I think you can use Signal Express with your cards, as soon as you have NI DAQmx install on your PXI. All of your card are using the NI DAQmx driver, so I think you should be able to use them with signal express.