D/A Convert Signal - Measurement Computing PCI-DAS6052 User Manual

PCI-DAS6052 User's Guide

D/A CONVERT signal

The D/A CONVERT signal causes a single output update on the D/A converters. You
can program the DAQ-Sync DS D/A UPDATE input or any AUXIN pin to accept the
D/A CONVERT signal. It is also available as an output on any AUXOUT pin.
The D/A CONVERT input signal polarity is software selectable. DAC outputs update
within 100ns of the selected edge. The D/A CONVERT pulses should be no less than
100 µs apart.
When used as an output, the D/A CONVERT signal may be used to monitor the pacing
of the output updates. The output has a pulse width of 225 ns with selectable polarity.
Figure 4-25
D/A CONVERT signal.
Rising Edge Polarity
Falling Edge Polarity
Figure 4-24. D/A START TRIGGER Output Signal Timing
and Fi gure 4-26 show the input and output timing requirements for the
Figure 4-25. D/A CONVERT Input Signal Timing
Figure 4-26. D/A CONVERT Output Signal Timing
t
w
t = 50 ns
w
t
w
t = 37.5 ns minimum
w
t
w
t = 225 ns
w
4-22
Functional Details