Measurement Computing UL for NI LabVIEW - Manual (Page 40)

Universal Library Virtual Instruments (VIs) Analog Output VIs
Simultaneous When this option is set (True) (if the board supports it and the appropriate switches
are set on the board) all of the D/A voltages will be updated simultaneously when
the last D/A in the scan is updated. This generally means that all the D/A values
will first be written to the board, then a read of a D/A address causes all D/As to be
updated with new values simultaneously.
ExtClock If this option (True) is used, conversions will be paced by the signal on the external
clock input line rather than by the internal pacer clock. Each conversion will be
triggered on the appropriate edge of the external clock input signal (see board-
specific info). When this option is used, the
Rate argument is ignored. The
sampling rate is dependent on the trigger signal. Options for the board will default
to transfer types that allow the maximum conversion rate to be attained unless
otherwise specified.
Rate (output Actual output rate (in samples per channel per second).
ErrCode Error code returned from the Universal Library. Zero if no error occurred. Use the
ErrMsg VI to convert ErrCod e into a readable string.
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