Programming instructions

Contents
© National Instruments Corporation xvii LabVIEW Data Acquisition Basics Manual
Figure 19-1. SCXI System...........................................................................................19-1
Figure 19-2. Components of an SCXI System.............................................................19-2
Figure 19-3. SCXI Chassis...........................................................................................19-3
Figure 21-1. Continuous Transducer Measurement VI................................................21-6
Figure 21-2. Measuring a Single Module with the Acquire and Average VI..............21-7
Figure 21-3. Measuring Temperature Sensors Using the Acquire and Average VI....21-8
Figure 21-4. Continuously Acquiring Data Using Intermediate VIs...........................21-9
Figure 21-5. Measuring Temperature Using Information
from the DAQ Channel Wizard............................................................21-11
Figure 21-6. Measuring Temperature Using the Convert RTD Reading VI................21-12
Figure 21-7. Half-Bridge Strain Gauge........................................................................21-13
Figure 21-8. Measuring Pressure Using Information
from the DAQ Channel Wizard............................................................21-15
Figure 21-9. Convert Strain Gauge Reading VI...........................................................21-15
Figure 21-10. SCXI-1124 Update Channels VI.............................................................21-17
Figure 21-11. Inputting Digital Signals through an SCXI Chassis
Using Easy Digital VIs.........................................................................21-17
Figure 21-12. Outputting Digital Signals through an SCXI Chassis
Using Easy Digital VIs.........................................................................21-19
Figure 23-1. Counter Gating Modes ............................................................................23-3
Figure 23-2. Wiring a 7404 Chip to Invert a TTL Signal ............................................23-4
Figure 24-1. Pulse Duty Cycles ...................................................................................24-2
Figure 24-2. Positive and Negative Pulse Polarity.......................................................24-2
Figure 24-3. Pulses Created with Positive Polarity and Toggled Output ....................24-3
Figure 24-4. Phases of a Single Negative Polarity Pulse.............................................24-3
Figure 24-5. Physical Connections for Generating a Square Pulse .............................24-4
Figure 24-6. Diagram of Delayed Pulse-Easy (DAQ-STC) VI ...................................24-5
Figure 24-7. Diagram of Delayed Pulse-Int (DAQ-STC) VI.......................................24-6
Figure 24-8. External Connections Diagram from the Front Panel
of Delayed Pulse (8253) VI..................................................................24-6
Figure 24-9. Frame 0 of Delayed Pulse (8253) VI.......................................................24-7
Figure 24-10. Frame 1 of Delayed Pulse (8253) VI.......................................................24-8
Figure 24-11. Frame 2 of Delayed Pulse (8253) VI.......................................................24-9
Figure 24-12. Physical Connections for Generating a Continuous Pulse Train ............24-10
Figure 24-13. Diagram of Cont Pulse Train-Easy (DAQ-STC) VI ...............................24-10
Figure 24-14. Diagram of Cont Pulse Train-Int (DAQ-STC) VI...................................24-11
Figure 24-15. External Connections Diagram from the Front Panel
of Cont Pulse Train (8253) VI..............................................................24-12