Here is what I suggest. I'm assuming you will use the DIO-32HS for writing to the digital line. You could use that digital line as a trigger for a counter on the PCI-6036E. When the counter is triggered, it could generate a single pulse with a delay of 20 microseconds and that pulse could be used as a trigger for analog input on the PCI-6036E.
There are LabVIEW shipping examples that will illustrate how to setup triggered counter and analog input applications. I hope this helps.
Regards,
Todd D.
Applications Engineer
National Instruments