Measurement Computing USB-1616HS-BNC User Manual page 37

USB-1616HS-BNC User's Guide Functional Details
DAC1 0.0 V
Figure 27. Using two criteria to control an output*
The update on True-only mode was selected, and therefore the updates for DAC1 only occur when the criteria is
met. However, in the above figure we see that there are two setpoints acting on one DAC. We can also see that
the two criteria can be met simultaneously. When both criteria are True at the same time, the DAC1 voltage is
associated with the criteria that has been most recently met.
Detecting setpoints on a totalizing counter
In the following figure, Channel 1 is a counter in totalize mode. Two setpoints define a point of change for
Detect 1 as the counter counts upward. The detect output is high when inside the window (greater than Limit B
(the low limit) but less than Limit A (the high limit).
In this case, the Channel 1 setpoint is defined for the 16 lower bits of channel 1's 32-bit value. You could update
DAC0 on a True condition (the rising edge of the detection signal). Alternately, you could update one of the
timer outputs with a value.
At this point you can update a DAC or a timer output
Figure 28. Channel 1 in totalizing counter mode, inside the window setpoint
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