20MHz timebase

[anarkie]

Hello?

I have a question about 20MHz timebase of AI operation on PCI-6025E card.

DAQmxCfgSampClkTiming(taskHandle,"",fdat.trace_size,DAQmx_Val_Rising,DAQmx_Val_FiniteSamps,fdat.trace_size)

fdat.trace_size is 1200 and this is a finite sampling repeated by a working tread. I wonder if I'm using 20MHz timebase. Whenever I use 20MHz time base as the second parameter, it returns error saying that I have to change fdat.trace_size to 20,000,000. But if I changed it to 20000000, it says its maximum value is not 20000000, but about 6000000.

How can I use 20MHz timebase? 

[lab_boy]

Hey,

You can either use "OnboardClock" or can use "100kHzTimebase" as you are acquiring about 1200 samples at 1.2KHz.

Good Luck,

-Lab