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776572-00
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Manuals and User Guides for National Instruments 776572-00. We have
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National Instruments 776572-00 manual available for free PDF download: User Manual
National Instruments 776572-00 User Manual (128 pages)
32-Channel Differential Multiplexer/Amplifier Module for Signal Conditioning
Brand:
National Instruments
| Category:
Multiplexer
| Size: 1.09 MB
Table of Contents
Table of Contents
5
About this Manual
11
Organization of this Manual
11
Conventions Used in this Manual
12
Customer Communication
13
Related Documentation
13
Chapter 1 Introduction
14
What Your Kit Should Contain
14
Optional Software
15
Optional Equipment
16
Custom Cables
17
Unpacking
17
Configuration and Installation
18
Module Configuration
18
Digital Signal Connections
20
Jumper W5
20
Jumper W9
21
Using Jumpers W5 and W9
21
Jumper W11 (Revision a and B Modules Only)
21
Analog Configuration
22
Table 2-1. Digital Signal Connections, Jumper Settings
22
Grounding, Shielding, and Output Mode Selection
23
Jumper W10
23
Table 2-2. Jumper W10 Settings
23
Reference Mode Selection
24
Jumper W1
24
Filter Selection
24
Jumpers W2 through W4
24
Table 2-3. Jumper W1 Settings
24
Output Selection
25
Jumpers W7 and W8
25
Table 2-4. Jumpers W2, W3, and W4 Settings
25
Input Filtering and Current Loop Receivers
26
Table 2-5. Jumpers W7 and W8 Settings
26
Table 2-6. User-Defined Input Filter Capacitors
26
Hardware Installation
27
Table 2-7. User-Defined Current Receiver Resistors
27
Signal Connections
28
Front Connector
28
Figure 2-2. SCXI-1100 Front Connector Pin Assignment
29
Front Connector Signal Descriptions
30
Analog Input Channels
30
Figure 2-3. Ground-Referenced Signal Connection
31
Figure 2-4. Floating Signal Connection
31
Figure 2-5. AC-Coupled Signal Connection
32
Thermocouple Connections
33
Open Thermocouple Detection
34
Analog Output
34
Connector-And-Shell Assembly
34
Figure 2-6. Assembling and Mounting the Connector-And-Shell Assembly
35
SCXI-1300 Terminal Block
36
Terminal Block Temperature Sensor
36
Terminal Block Jumper Configuration
36
Terminal Block Signal Connection
37
Terminal Block Installation
37
Table 2-8. Jumper Setting on the Terminal Block
37
Rear Signal Connector
39
Figure 2-8. SCXI-1100 Rear Signal Connector Pin Assignment
39
Rear Signal Connector Signal Descriptions
40
Analog Output Signal Connections
41
Digital I/O Signal Connections
41
Table 2-9. Scxibus to SCXI-1100 Rear Signal Connector to Data Acquisition Board Pin Equivalences
42
Timing Requirements and Communication Protocol
43
Timing Signal
43
Communication Signals
43
Figure 2-9. SCANCLK Timing Requirements
43
Figure 2-10. Slot-Select Timing Diagram
44
Figure 2-11. Serial Data Timing Diagram
45
Figure 2-12. Configuration Register Write Timing Diagram
46
Figure 2-13. SCXI-1100 Module ID Register Timing Diagram
46
Chapter 3 Theory of Operation
47
Functional Overview
47
Figure 3-1. SCXI-1100 Block Diagram
47
Figure 3-2. SCXI-1100 Detailed Block Diagram
48
Scxibus Connector
49
Figure 3-3. Scxibus Connector Pin Assignment
50
Scxibus Connector Signal Descriptions
51
Table 3-1. Scxibus Equivalents for the Rear Signal Connector
52
Digital Interface Circuitry
53
Figure 3-4. Digital Interface Circuitry Block Diagram
53
Digital Control Circuitry
54
Figure 3-5. SCXI-1100 Digital Control Circuitry
54
Analog and Timing Circuitry
55
Analog Input and Timing Circuits
55
Figure 3-6. Analog Input and Timing Block Diagram
56
Table 3-2. Multiplexer/Input Channel Correspondence
57
Calibration
58
Figure 3-7. Pad Locations
58
Analog Output Circuitry
59
Figure 3-8. Analog Output Circuitry
59
Scanning Modes
60
Single-Module Multiplexed Scanning
60
Single-Module Multiplexed Scanning (Direct)
60
Single-Module Multiplexed Scanning (Indirect)
61
Multiple-Module Multiplexed Scanning
61
Figure 3-9. Single-Module Multiplexed Scanning (Direct)
61
Figure 3-10. Single-Module Multiplexed Scanning (Indirect)
61
Figure 3-11. Multiple-Module Multiplexed Scanning
62
Figure 3-12. Multiple-Chassis Scanning
62
Register Descriptions
63
Register Description
63
Register Description Format
63
SCXI-1100 Register Descriptions
63
Module ID Register
64
Configuration Register
65
Slot 0 Register Descriptions
68
Slot-Select Register
69
Hardscan Control Register (HSCR)
70
FIFO Register
71
Chapter 5 Programming
72
Programming Considerations
72
Notation
72
Register Writes
72
Register Selection and Write Procedure
73
Table 5-1. SCXI-1100 Rear Signal Connector Pin Equivalences
73
Initialization
74
Single-Channel Measurements
74
Direct Measurements
74
Indirect Measurements
75
Measurements from Other Modules
75
Measurements from the SCXI-1100 Via Another Module
75
Scanning Measurements
76
Data Acquisition Board Setup Programming
77
Counter 1 and SCANDIV
78
Module Programming
79
Single-Module Multiplexed Scanning (Direct)
79
Single-Module Multiplexed Scanning (Indirect)
79
Channel Scanning from Other Modules
79
Channel Scanning from the SCXI-1100 Via Another Module
79
Multiple-Module Multiplexed Scanning
80
Multiple-Chassis Scanning
80
Programming the Slot 0 Hardscan Circuitry
81
Acquisition Enable, Triggering, and Servicing
82
Scanning Examples
82
Example 1
82
Appendix A Specifications
86
Analog Input
86
Explanation of Analog Input Specifications
87
Physical
88
Cold-Junction Sensor
88
Operating Environment
88
Storage Environment
88
Appendix B Rear Signal Connector
89
Figure B-1. SCXI-1100 Rear Signal Connector Pin Assignment
89
Rear Signal Connector Signal Descriptions
90
Appendix Cscxibus Connector
91
Figure C-1. Scxibus Connector Pin Assignment
92
Scxibus Connector Signal Descriptions
93
SCXI-1100 Front Connector
95
Figure D-1. SCXI-1100 Front Connector Pin Assignment
95
Front Connector Signal Descriptions
96
Appendix Escxi-1100 Cabling
97
SCXI-1340 Cable Assembly
97
SCXI-1340 Installation
98
Table E-1. SCXI-1100 and MIO Board Pinout Equivalences
98
SCXI-1341 Lab-NB, Lab-PC, or Lab-PC+ and SCXI-1344 Lab-LC Cable Assemblies
99
Figure E-1. SCXI-1340 Installation
99
SCXI-1341 and SCXI-1344 Installation
100
Table E-2. SCXI-1341 and SCXI-1344 Pin Translations
100
SCXI-1342 PC-LPM-16 Cable Assembly
101
Table E-3. SCXI-1342 Pin Translations
101
SCXI-1342 Installation
102
AT-MIO-16D and AT-MIO-64F-5 Board Connection
102
SCXI-1351 and NB5 Cable Installation
102
Figure E-2. NB5 Cable and SCXI-1351 Installation
103
SCXI-1180 Feedthrough Panel
104
SCXI-1180 Installation
104
Figure E-3. SCXI-1180 Rear Connections
105
SCXI-1302 50-Pin Terminal Block
106
SCXI-1302 Wiring Procedure
106
Figure E-4. SCXI-1180 Front Panel Installation
106
SCXI-1302 Installation
107
Figure E-5. Cover Removal
107
SCXI-1351 One-Slot Cable Extender
108
SCXI-1351 Installation
108
SCXI-1350 Multichassis Adapter
108
SCXI-1350 Installation
109
SCXI-1343 Rear Screw Terminal Adapter
109
SCXI-1343 Installation
109
Table E-4. SCXI-1343 Pin Connections
110
Revision a and B Photo and Parts Locator Diagram
111
Figure F-1. Revision a and B SCXI-1100 Signal Conditioning Module
111
Customer Communication
113
Glossary
125
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