How Can I Maintain an Output Voltage After a Task has Stopped on an NI-4461? Hardware: Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)
Problem: When I am outputting a signal on my NI-4461, I notice that the channel resets to zero volts after the DAQmx task is done. I would like it to maintain the last value that was output on the channel. Is this possible? Solution: Yes, by default the 4461 board resets the output voltage to zero after the task is complete. This can be easily changed by using a DAQmx Channel Property Node and selecting Analog Output > General Properties > Output Configuration > Idle Output Behavior. If you create a constant from the AO.IdleOutputBehavior property, you will notice that it is set to zero by default. You can change this to "High Impedance" or "Maintain Existing Value". Selecting "Maintain Existing Value" will continue generating the last value even after the task has stopped. Related Links: Attachments:  - IdleOutputProperty.JPG
Report Date: 01/10/2007 Last Updated: 02/07/2007 Document ID: 459JAM9U |
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