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Chapter 5 Using the NI PXI-4224
© National Instruments Corporation 5-11 NI PXI-4224 User Manual
Other Application Documentation and Material
The following locations provide more information that you may find useful
when setting up or connecting signal sources or programming your
application.
• LabVIEW Example Programs, available by selecting Help»
Find Examples from the opening screen. Most of the examples
applicable to the NI PXI-4224 are located in Hardware Input and
Output»DAQmx»Analog Measurements and Hardware Input and
Output»DAQmx»Synchronization»Multi-Device.
• PXI-4224 Supported Properties in the LabVIEW VI, Function,
&How-To Help.
• Application Note 025: Field Wiring and Noise Considerations for
Analog Signals available at
ni.com/info using the info code
rdfwn3.
Set Slave to Use Timebase
from Master
Use a DAQmx Timing Property Node to set
MasterTimebase.Src and MasterTimebase.Rate to the
values retrieved from the master task in the Get Master Timebase
Source and Rate from Master Task step.
Configure Slave Triggering DAQmx Trigger.vi (Start Digital Edge) use /MasterDevice/
ai/StartTrigger
as the source, substituting the master device
identifier for
MasterDevice.
Start Slave Measurement(s) DAQmx Start Task.vi
Start Master Measurement DAQmx Start Task.vi
Read Measurement DAQmx Read.vi
Continue Sampling For continuous sampling, use a While Loop. You also need to set
the sample mode to Continuous Samples in the Configure
Master Timing and Configure Slave Timing steps. To do this,
right-click the terminal of the
DAQmx Timing.vi labeled
sample mode and click Create»Constant. Click the checkbox
and select Continuous Samples.
Clear Master Task DAQmx Clear Task.vi
Clear Slave Task DAQmx Clear Task.vi
Table 5-3. Synchronizing the NI PXI-4224 Using LabVIEW (Continued)
Flowchart Step VI or Program Step