National Instruments SCXI-1141, User Manual, Page: 8 / 80

Contents
© National Instruments Corporation ix SCXI-1141/1142/1143 User Manual
Glossary
Index
Figures
Figure 2-1. Installing the SCXI-1141/1142/1143 Module .......................................2-5
Figure 2-2. Connecting the SCXI Modules for Multiplexed and Parallel Mode .....2-7
Figure 2-3. Removing the SCXI-1141/1142/1143 Module .....................................2-17
Figure 3-1. Ground-Referenced Signal Connection.................................................3-4
Figure 3-2. Floating Signal Connection ...................................................................3-5
Figure 3-3. Ground-Referenced AC-Coupled Signal Connection ...........................3-6
Figure 3-4. Ground-Offset AC-Coupled Signal Connection ...................................3-6
Figure 3-5. Floating AC-Coupled Signal Connection..............................................3-6
Figure 3-6. SCXI-1141/1142/1143 Module Rear Signal Connector .......................3-8
Figure 4-1. SCXI-1141/1142/1143 Module Block Diagram ...................................4-3
Figure 4-2. Ideal and Real Lowpass Filter Transfer Function Characteristics ........4-6
Figure 4-3. Real and Ideal Filter Responses to a Step Input Signal.........................4-7
Figure 4-4. Typical Magnitude Response of the SCXI-1141/1142/1143
Module Filters .......................................................................................4-8
Figure 4-5. Typical Passband Responses of the SCXI-1141/1142/1143 Module....4-9
Figure 4-6. Phase Response Characteristics of the SCXI-1141/1142/1143
Module Filters .......................................................................................4-10
Figure 4-7. Phase Error of the SCXI-1141/1142/1143 Module ...............................4-11
Figure 4-8. Group Delay of the SCXI-1141/1142/1143 Module .............................4-11
Figure 4-9. Unit Step Response of the SCXI-1141/1142/1143 Module ..................4-12
Figure 4-10. Aliasing of an Input Signal with a Frequency 0.8 Times
the Sample Rate.....................................................................................4-14
Tables
Table 3-1. SCXI-1141/1142/1143 Module Front Connector .................................3-1
Table 3-2. SCXIbus to SCXI-1141/1142/1143 Module Rear Signal Connector
to DAQ Device Pin Equivalencies ........................................................3-11
Table 4-1. Cutoff Frequency Ranges for the SCXI-1141/1142/1143 Module
Prefilters and Postfilters ........................................................................4-16
Table A-1. Settling Time with Respect to Cutoff Frequency ..................................A-3