Programming instructions

Contents
© National Instruments Corporation xv LabVIEW Data Acquisition Basics Manual
Figure 6-4. The AI Single Scan VI Help Diagram.....................................................6-4
Figure 6-5. Using the Intermediate VIs for a Basic Non-Buffered Application........6-4
Figure 6-6. The Cont Acq&Chart (Immediate) VI Block Diagram...........................6-5
Figure 6-7. Software-Timed Analog I/O....................................................................6-7
Figure 6-8. Analog IO Control Loop (HW-Timed) VI Block Diagram ....................6-8
Figure 7-1. How Buffers Work..................................................................................7-2
Figure 7-2. The AI Acquire Waveform VI ................................................................7-3
Figure 7-3. The AI Acquire Waveforms VI...............................................................7-3
Figure 7-4. Using the Intermediate VIs to Acquire Multiple Waveforms .................7-4
Figure 7-5. Simple Buffered Analog Input Example.................................................7-6
Figure 7-6. Simple Buffered Analog Input with Graphing........................................7-6
Figure 7-7. Taking a Specified Number of Samples with the Intermediate VIs........7-7
Figure 7-8. Writing to a Spreadsheet File after Acquisition......................................7-8
Figure 7-9. How a Circular Buffer Works .................................................................7-9
Figure 7-10. Continuously Acquiring Data with the Intermediate VIs........................7-11
Figure 7-11. Continuous Acq&Chart (Async Occurrence) VI ....................................7-12
Figure 7-12. Basic Circular-Buffered Analog Input Using the Intermediate VIs........7-13
Figure 8-1. Diagram of a Digital Trigger...................................................................8-2
Figure 8-2. Digital Triggering with Your DAQ Device ............................................8-3
Figure 8-3. Block Diagram of the Acquire N Scans Digital Trig VI.........................8-4
Figure 8-4. Diagram of an Analog Trigger................................................................8-6
Figure 8-5. Analog Triggering with Your DAQ Device............................................8-6
Figure 8-6. Block Diagram of the Acquire N Scans Analog Hardware Trig VI .......8-7
Figure 8-7. Timeline of Conditional Retrieval...........................................................8-9
Figure 8-8. The AI Read VI Conditional Retrieval Cluster.......................................8-10
Figure 8-9. Block Diagram of the Acquire N Scans Analog Software Trig VI.........8-11
Figure 9-1. Channel and Scan Intervals Using the Channel Clock............................9-1
Figure 9-2. Round-Robin Scanning Using the Channel Clock..................................9-2
Figure 9-3. Example of a TTL Signal ........................................................................9-3
Figure 9-4. Getting Started Analog Input Example VI..............................................9-4
Figure 9-5. Setting the Clock Source Code for External Conversion Pulses
for E-Series Devices.............................................................................9-5
Figure 9-6. Externally Controlling Your Scan Clock with the Getting Started
Analog Input Example VI ....................................................................9-7
Figure 9-7. Controlling the Scan and Channel Clock Simultaneously ......................9-8
Figure 11-1. Single Immediate Update Using the AO Update Channels VI ...............11-1
Figure 11-2. Single Immediate Update Using the AO Update Channel VI.................11-2