National Instruments NI 4350, Руководство пользователя, Страница: 6 / 83

Contents
©
National Instruments Corporation vii NI 4350 User Manual
Appendix A
Specifications
Appendix B
Signal Connections
Appendix C
Customer Communication
Glossary
Index
Figures
Figure 1-1. The Relationship between the Programming Environment,
NI-DAQ and Your Hardware ............................................................... 1-6
Figure 3-1. Digital Filter Characteristics for 10 Hz Setting ..................................... 3-2
Figure 3-2. Effect of the Cold-Junction.................................................................... 3-7
Figure 3-3. Resistance-Temperature Curve for a 100
Ω
Platinum RTD.................. 3-15
Figure 3-4. Two-Wire RTD Measurement ............................................................... 3-17
Figure 3-5. Four-Wire RTD Measurement............................................................... 3-17
Figure 3-6. Three-Wire RTD Measurement with a Wheatstone Bridge
and a Current Source.............................................................................. 3-18
Figure 3-7. Three-Wire RTD Measurement ............................................................. 3-18
Figure 3-8. Resistance-Temperature Curve of a Thermistor .................................... 3-19
Figure 3-9. Thermistor Measurement ....................................................................... 3-21
Figure 3-10. Multiple Transducer Connections to Analog Channels in
One Measurement Setup ........................................................................ 3-22
Figure 3-11. Examples of DIO Applications.............................................................. 3-28
Tables
Table 2-1. LED Patterns for the NI 4350 (USB) States .......................................... 2-4
Table 3-1. Filtering and Sample Rates .................................................................... 3-3
Table 3-2. Using Programmable Ground-Referencing ........................................... 3-5
Table 3-3. Using Programmable, Open-Thermocouple Detection ......................... 3-6
Table 3-4. Callendar-Van Dusen Coefficients Corresponding
to Common RTDs .................................................................................. 3-16