ADLINK DAQe-2214 - Manual (Page 87)

Operation Theory 75
AFI[1] (DAQ-/DAQe-2214 only)
Regarding D/A operations, you can directly input the external
D/A update signal to replace the internal DAWR signal. This is
another way to achieve customized D/A update rates. The
external DAWR signal can only be inputted from the AFI[1].
Note that the AFI[1] is a multi-purpose input, and it can only be
utilized for one function at any one time. Currently, AFI[1] has
only one function. ADLINK reserves this for future develop-
ment.