To answer this question, I need more information.
1) The PCI-6522 does not exist. Is this a typo for PCI-6552 or PCI-6542?
2) What type of synchronization do you want? Do you want to start the 65x2 and the 5122 at the same time and stream data from the 5122? Do you want to take data at specific times in the 65x2 data stream?
In any case, you will need an RTSI cable to connect the two boards. You can take data from the 5122 as you are generating it from the 65x2. Just put the generation and acquisition in separate loops on your block diagram (assuming you are using LabVIEW, if not, you will need to spawn another process or thread to handle the acquisition). Using signals over the RTSI bus to communicate between the devices will synchronize them in hard
ware.
You should be able to do this. Be aware that if you are streaming to disk from the digitizer, the typical modern desktop is limited to about 20MBytes/sec due to hard drive limitations.
