Other application documentation and material, Other application documentation and material -11 – National Instruments Isolated Analog Input Device NI PXI-4224 User Manual
Page 47
Chapter 5
Using the NI PXI-4224
© National Instruments Corporation
5-11
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
Source and Rate from Master Task
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
and
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