What is FIFO with the MX100/DARWIN API?

It is a process in which measured data is written to a buffer. On the MX100, measured data cannot be acquired unless FIFO is started. On the MX100 you can use different FIFO buffers for each measurement interval (up to 3). See the corresponding manual chapter below.
See the following manual chapters.
Chapter, "MX100 Terminology" in the user's manual