Chapter 2 Function Reference — DIG_Block_PG_Config
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National Instruments Corporation 2-157 NI-DAQ FRM for PC Compatibles
On the DIO 6533 (DIO-32HS), output is always double-buffered, thus minimizing the
variability in update intervals. In addition, the ACK pulse irregularities are not present.
Therefore, values 1 and 2 for the config parameter are equivalent for the DIO 6533.