Programming instructions

Contents
LabVIEW Data Acquisition Basics Manual xiv
© National Instruments Corporation
F
IGURES AND
T
ABLES
Figures
Figure 2-1. Installing and Configuring DAQ Devices............................................... 2-2
Figure 2-2. How NI-DAQ Relates to Your System and DAQ Devices .................... 2-3
Figure 2-3. NI-DAQ Device Window Listing........................................................... 2-7
Figure 2-4. Accessing the Device Configuration Window in NI-DAQ .................... 2-7
Figure 2-5. Device Configuration and I/O Connector Windows in NI-DAQ ........... 2-8
Figure 2-6. Accessing the NI-DAQ SCXI Configuration Window........................... 2-11
Figure 2-7. SCXI Configuration Window in NI-DAQ.............................................. 2-11
Figure 3-1. Accessing the Data Acquisition Palette .................................................. 3-3
Figure 3-2. Data Acquisition VIs Palette................................................................... 3-3
Figure 3-3. Analog Input VI Palette Organization .................................................... 3-4
Figure 3-4. LabVIEW Help Window Conventions................................................... 3-6
Figure 3-5. LabVIEW Error In Input and Error Out Output Error Clusters.............. 3-9
Figure 3-6. Channel String Controls.......................................................................... 3-10
Figure 3-7. Channel String Array Controls ............................................................... 3-11
Figure 3-8. Limit Settings, Case 1............................................................................. 3-13
Figure 3-9. Limit Settings, Case 2............................................................................. 3-13
Figure 3-10. Example of a Basic 2D Array ................................................................. 3-14
Figure 3-11. 2D Array in Row Major Order................................................................ 3-15
Figure 3-12. 2D Array in Column Major Order .......................................................... 3-15
Figure 3-13. Extracting a Single Channel from a Column Major 2D Array ............... 3-16
Figure 3-14. Analog Output Buffer 2D Array............................................................. 3-16
Figure 5-1. Types of Analog Signals......................................................................... 5-1
Figure 5-2. Grounded Signal Sources........................................................................ 5-2
Figure 5-3. Floating Signal Sources .......................................................................... 5-3
Figure 5-4. The Effects of Resolution on ADC Precision......................................... 5-4
Figure 5-5. The Effects of Range on ADC Precision ................................................ 5-5
Figure 5-6. The Effects of Limit Settings on ADC Precision.................................... 5-6
Figure 5-7. 8-Channel Differential Measurement System......................................... 5-9
Figure 5-8. Common-Mode Voltage ......................................................................... 5-10
Figure 5-9. 16-Channel RSE Measurement System.................................................. 5-11
Figure 5-10. 16-Channel NRSE Measurement System ............................................... 5-12
Figure 6-1. AI Sample Channel VI............................................................................ 6-1
Figure 6-2. Acquiring Data Using the Acquire 1 Point from 1 Channel VI.............. 6-2
Figure 6-3. Acquiring a Voltage from Multiple Channels
with the AI Sample Channels VI ......................................................... 6-3