This is a very good question. The NI-DAQ driver does not support driving the PXI_Star lines via the 6608.
Another way of expressing this is that you will NOT be able to synchronize the 4472s with the 6608 in a configuration in which the 6608 is the clock master.
However, you can still use the 6608 (or 6602) to timestamp events in the timebase of the 4472 sample clock or "oversample clock" (the oversample clock is the signal which is physically carried on the PXI_Star lines when you synchronize multiple 4472s). Do do this in SW, you should perform the following steps:
#1) Configure the 4472 in Slot 2 as a master (export Board Clock on PXI Star)
#2) Configure any other 4472s present as slaves.
#3) Configure a counter on the 6608 for Buffered Event C
ounting
#4) Route RTSI6 (this is actually the PXI_Star signal) to the SOURCE of the counter. The signal carried on this line will be 128 times the sample rate (51.2 - 102.4 kS/sec) or 256 times the sampling rate (1 kS/sec - 51.2 kS/sec) on the 4472.
#5) Wire an external signal (such as an encoder pulse) to the GATE of the counter.
This arrangement will timestamp the events on the GATE in terms of the 4472 oversample clock.
