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National Instruments NI PXI-4224 Other Application Documentation and Material

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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

Contents

Main Page Important Information Warranty Copyright Trademarks Patents Conventions Contents Page Figures Tables About the NI PXI-4224 What You Need to Get Started National Instruments Documentation Installing the Application Software, NI-DAQ, and the DAQ Device Installing the NI PXI-4224 LED Pattern Descriptions Connecting Signals Connecting Signals to the NI PXI-4224 Front Signal Connector Page Analog Input Connections Page Figure 2-3. Unshielded Grounded Signal Source Connection Using a D-SUB Connector Figure 2-4. Shielded Floating Signal Source Connection Using a D-SUB Connector Figure 2-5. Shielded Grounded Signal Source Connection Using a D-SUB Connector Figures 2-6 through 2-9 illustrate connecting signals using a terminal block. Figure 2-6. Unshielded Floating Signal Source Connection Using a Terminal Block Figure 2-7. Unshielded Grounded Signal Source Connection Using a Terminal Block Figure 2-8. Shielded Floating Signal Source Connection Using a Terminal Block Floating Signal Source Connection Ground-Referenced Signal Connection Shielded Ground-Referenced Signal Connection (Recommended) Configuring and Testing Verifying and Self-Testing the Signals Using Test Panels Configuring the NI PXI-4224 in MAX Creating a Voltage Task or Global Channel Using NI-DAQmx Verifying and Self-Testing an NI-DAQmx Task or Global Channel Page Chapter 4 Theory of Operation Figure 4-1. Block Diagram of NI PXI-4224 NI PXI-4224 User Manual 4-2 ni.com Signal Conditioning Functional Overview Measurement Considerations Input Impedance Common-Mode Rejection Ratio Effective CMR Timing and Control Functional Overview Programmable Function Inputs Device and PXI Clocks Figure 4-4 shows this signal connection scheme. Figure 4-4. NI PXI-4224 PXI Trigger Bus Signal Connection Page Using the NI PXI-4224 Developing Your Application Typical Program Flow Chart Figure 5-1. Typical Program Flowchart Overview of Typical Flow Chart Creating a Task Using DAQ Assistant or Programmatically Adjusting Timing and Triggering Configuring Channel Properties Acquiring, Analyzing, and Presenting Completing the Application Developing an Application Using LabVIEW Page Using a DAQmx Channel Property Node in LabVIEW Synchronization and Triggering Synchronizing the NI PXI-4224 Figure 5-2. General Synchronizing Flowchart Synchronizing the NI PXI-4224 Using LabVIEW Other Application Documentation and Material Calibrating the NI PXI-4224 Loading Calibration Constants Self-Calibration External Calibration A Specifications Overvoltage Protection Analog Input Accuracy Transfer Characteristics Calibration Pre-Calibration Errors Memory Digital Triggers PXI Trigger Bus PCI Bus Interface Power Requirements Physical Maximum Working Voltage Isolation Voltages Environmental Safety Electromagnetic Compatibility CE Compliance Online Product Certification Environmental Management RoHS B Timing Signal Information Connecting Timing Signals Programmable Function Input Connections DAQ Timing Connections AI START TRIG Signal AI REF TRIG Signal AI SAMP CLK Signal Page AI CONV CLK Signal AI PAUSE TRIG Signal AI SAMPLE CLK TIMEBASE Signal AI HOLD COMPLETE Signal C Removing the NI PXI-4224 Removing the NI PXI-4224 from a PXI or PXI/SCXI Combination Chassis Removing the NI PXI-4224 from MAX D Common Questions Page Glossary Symbols A B C D E F G H I K L M N O P R S T V Page Index A B C D E F G H I L O P Q R S T V