Network Card User Manual
Table Of Contents
- SCXI-1121 User Manual
- Support
- Important Information
- Contents
- About This Manual
- Chapter 1 Introduction
- Chapter 2 Configuration and Installation
- Chapter 3 Theory of Operation
- Chapter 4 Register Descriptions
- Chapter 5 Programming
- Appendix A Specifications
- Appendix B Rear Signal Connector
- Appendix C SCXIbus Connector
- Appendix D SCXI-1121 Front Connector
- Appendix E SCXI-1121 Cabling
- Appendix F Revision A and B Photo and Parts Locator Diagrams
- Appendix G Technical Support Resources
- Glossary
- Index
- Figures
- Figure 2-1. SCXI-1121 General Parts Locator Diagram
- Figure 2-2. SCXI-1121 Detailed Parts Locator Diagram
- Figure 2-3. SCXI-1121 Front Connector Pin Assignment
- Figure 2-4. Ground-Referenced Signal Connection with High Common-Mode Voltage
- Figure 2-5. Floating Signal Connection Referenced to Chassis Ground for Better Signal-to-Noise Ratio
- Figure 2-6. Floating AC-Coupled Signal Connection
- Figure 2-7. AC-Coupled Signal Connection with High Common-Mode Voltage
- Figure 2-8. Assembling and Mounting the SCXI-1330 Connector-and-Shell Assembly
- Figure 2-9. Nulling Circuit
- Figure 2-10. Shunt Circuit
- Figure 2-11. SCXI-1320 Parts Locator Diagram
- Figure 2-12. SCXI-1328 Parts Locator Diagram
- Figure 2-13. SCXI-1321 Parts Locator Diagram
- Figure 2-14. SCXI-1121 Rear Signal Connector Pin Assignment
- Figure 2-15. SCANCLK Timing Requirements
- Figure 2-16. Slot-Select Timing Diagram
- Figure 2-17. Serial Data Timing Diagram
- Figure 2-18. Configuration Register Write Timing Diagram
- Figure 2-19. SCXI-1121 Module ID Register Timing Diagram
- Figure 3-1. SCXI-1121 Block Diagram
- Figure 3-2. SCXIbus Connector Pin Assignment
- Figure 3-3. Digital Interface Circuitry Block Diagram
- Figure 3-4. SCXI-1121 Digital Control
- Figure 3-5. Analog Input Block Diagram
- Figure 3-6. Analog Output Circuitry
- Figure 3-7. Single-Module Parallel Scanning
- Figure 3-8. Single-Module Multiplexed Scanning (Direct)
- Figure 3-9. Single-Module Multiplexed Scanning (Indirect)
- Figure 3-10. Multiple-Module Multiplexed Scanning
- Figure 3-11. Multiple-Chassis Scanning
- Figure B-1. SCXI-1121 Rear Signal Connector Pin Assignment
- Figure C-1. SCXIbus Connector Pin Assignment
- Figure D-1. SCXI-1121 Front Connector Pin Assignment
- Figure E-1. SCXI-1340 Installation
- Figure E-2. SCXI-1180 Rear Connections
- Figure E-3. SCXI-1180 Front Panel Installation
- Figure E-4. Cover Removal
- Figure F-1. Revision A and B SCXI-1121 Signal Conditioning Module
- Figure F-2. Revision A and B SCXI-1121 General Parts Locator Diagram
- Figure F-3. Revision A and B SCXI-1121 Detailed Parts Locator Diagram
- Tables
- Table 2-1. Digital Signal Connections, Jumper Settings
- Table 2-2. Jumper W33 Settings
- Table 2-3. Gain Jumper Allocation
- Table 2-4. Gain Jumper Positions
- Table 2-5. Filter Jumper Allocation
- Table 2-6. Voltage and Current Mode Excitation Jumper Setup
- Table 2-7. Maximum Load per Excitation Channel
- Table 2-8. Excitation Level Jumper Selection
- Table 2-9. Completion Network Jumpers
- Table 2-10. Trimmer Potentiometer and Corresponding Channel
- Table 2-11. Nulling Resistors and Corresponding Channel
- Table 2-12. Jumper Settings of the Nulling Circuits
- Table 2-13. Jumper Settings on the SCXI-1320 Terminal Block
- Table 2-14. Jumper Settings on the SCXI-1328 Terminal Block
- Table 2-15. Jumper Settings on the SCXI-1321 Terminal Block
- Table 2-16. SCXIbus to SCXI-1121 Rear Signal Connector to Data Acquisition Board Pin Equivalences
- Table 3-1. SCXIbus Equivalents for the Rear Signal Connector
- Table 3-2. Calibration Potentiometer Reference Designators
- Table 5-1. SCXI-1121 Rear Signal Connector Pin Equivalences
- Table E-1. SCXI-1121 and MIO-16 Pinout Equivalences
- Table E-2. SCXI-1341 and SCXI-1344 Pin Translations
- Table E-3. SCXI-1342 Pin Translations
- Table E-4. SCXI-1343 Pin Connections
Index
SCXI-1121 User Manual Index-6 www.natinst.com
SCXIbus to SCXI-1121 rear signal
connector to DAQ board pin
equivalences (table), 2-41
MTEMP signal (table), 2-18, D-3
MTS mode, terminal blocks, 2-31 to 2-32
multiple-chassis scanning
programming, 5-12 to 5-13
theory of operation, 3-20
multiplexed output, single-channel
measurements, 5-4 to 5-5
multiplexed scanning
multiple-module
description, 3-19
programming, 5-12
overview, 3-17 to 3-18
single-module, 3-18 to 3-19
direct, 3-18
indirect, 3-18 to 3-19
programming, 5-11 to 5-12
Multiplexed-Output mode, 3-16
MUXCOUNTER, 3-15 to 3-16
N
National Instruments Web support, G-1 to G-2
NI-DAQ software, 1-2
for Macintosh, 1-3
notation, for programming, 5-1
nulling circuitry, SCXI-1321 terminal block,
2-25 to 2-27
formula for nulling range, 2-26 to 2-27
jumper settings (table), 2-28
nulling resistors and corresponding
channel (table), 2-26
trimmer potentiometer and corresponding
channel (table), 2-25
O
offset null adjust, in calibration, 3-12 to 3-13
offset-null terminal block. See SCXI-1321
terminal block.
ONCE bit, 4-7
online problem-solving and diagnostic
resources, G-1
operation of SCXI-1121. See theory of
operation.
optional equipment (table), 1-4
optional software, 1-2 to 1-3
OUTREF signal (table), 2-38, B-2
P
parallel output, single-channel
measurements, 5-4
parallel scanning, single-module
description, 3-17
programming, 5-10
Parallel-Output mode, 3-16
parts locator diagrams
Revision A and B
detailed, F-3
general, F-2
SCXI-1121
detailed (figure), 2-2
general (figure), 2-1
SCXI-1320 terminal block, 2-34
SCXI-1321 terminal block, 2-36
SCXI-1328 terminal block, 2-35
physical specifications, A-4
pin assignments
front connector (figure), 2-17, D-2
rear signal connector (figure), 2-37, B-1
SCXI-1343 Rear Screw Terminal Adapter
(table), E-14 to E-16
SCXIbus connector (figure), C-2
pin translations (table)
SCXI-1341 Lab-NB, Lab-PC, or
Lab-PC+ cable assembly, E-5
SCXI-1342 PC-LPM-16 cable assembly,
E-6 to E-7