you are welcome!
Actually the maximum capture size depends on sample rate you are using.
OLS has 216K block RAM that can support different memory configurations depending on how many channels are used:
8 channels with 24K sample depth
16 channels with 12K sample depth
32 channels with 6K sample depth
Unless RLE is in use the total acquisition time is the fraction of the available sample depth on sampling rate.
So for instance, considering RLE is off, with 8 channels there are 24K sample depth and by sampling at 200MHz it is 24K/200MHz=120us as lasting time for the acquisition.
By using RLE compression the lasting time will be increased.
In this case, regardless by the real number of channels needed for the acquiring, it's better setting the client for all 32 available because it extends the maximum lasting time for the acquisition.
Please take a look at these: viewtopic.php?f=23&t=1711&p=59523&hilit=FPGA+V viewtopic.php?f=23&t=1711&p=59523&hilit=FPGA+Verilog+Demon+Core+AdvTrigger+Meta+RLE+Ti#p59523