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SCXI-1502
National Instruments SCXI-1502 Manuals
Manuals and User Guides for National Instruments SCXI-1502. We have
1
National Instruments SCXI-1502 manual available for free PDF download: User Manual
National Instruments SCXI-1502 User Manual (75 pages)
Brand:
National Instruments
| Category:
Control Unit
| Size: 3.45 MB
Table of Contents
Table of Contents
6
About the SCXI-1502
9
What You Need to Get Started
9
National Instruments Documentation
11
Installing Application Software, NI-DAQ, and the DAQ Device
12
Installing the SCXI-1502 into an SCXI Chassis or a PXI/SCXI Combination Chassis
12
Installing the Terminal Block
12
Table 1-1. Supported SCXI-1502 Terminal Blocks
12
Verifying the SCXI-1502 Installation in Software
13
Installing SCXI Chassis and Modules in Software
13
Troubleshooting the Self-Test Verification
13
Troubleshooting in NI-Daqmx
13
Connecting the Signals
15
Front Connector
15
Table 2-1. SCXI-1502 Front Signal Pin Assignments
16
Front Connector Signal Descriptions
17
Analog Input Signal Connections
17
Table 2-2. Front Connector Signals
17
Figure 2-1. Ground-Referenced Signal Connection
19
Cold-Junction Sensor Connection
20
Rear Signal Connector
20
Figure 2-2. Floating Signal Connection Referenced to Chassis Ground
20
Table 2-3. Rear Signal Pin Assignments
21
Rear Signal Connector Descriptions
22
Table 2-4. SCXI-1502 Rear Connector Signals
22
Connecting Thermocouples
23
Connecting Rtds
23
Connecting a Current-Loop Receiver
24
Configuring and Testing
25
SCXI-1502 Software-Configurable Settings
25
Common Software-Configurable Settings
25
Gain/Input Range
25
Input Selection
26
CJC Source/Value
26
Auto-Zero
26
Configurable Settings in MAX
26
NI-Daqmx
26
Table 5-1. NI-Daqmx Voltage Measurement Properties
26
Creating a Global Channel or Task
27
Verifying the Signal
28
Verifying the Signal in NI-Daqmx Using a Task or Global Channel
28
Theory of Operation
30
Figure 4-1. SCXI-1502 Module Block Diagram
31
Rear Signal Connector, Scxibus Connector, and Scxibus Interface
32
Digital Control Circuitry
32
Analog Circuitry
32
Analog Input Channels
32
Theory of Multiplexed Operation
33
Using the SCXI-1502
35
Developing Your Application in NI-Daqmx
35
Typical Program Flowchart
35
Figure 5-1. Typical Program Flowchart for Voltage Measurement Channels
36
General Discussion of Typical Flowchart
37
Creating a Task Using DAQ Assistant or Programmatically
37
Adjusting Timing and Triggering
37
Configuring Channel Properties
38
Table 5-2. NI-Daqmx Thermocouple Measurement Properties
39
Table 5-3. NI-Daqmx RTD Measurement Properties
39
Table 5-4. NI-Daqmx Thermistor Measurement Properties
40
Table 5-5. NI-Daqmx Current Measurement Properties
40
Acquiring, Analyzing, and Presenting
41
Completing the Application
41
Developing an Application Using Labview
41
Table 5-6. Programming a Task in Labview
42
Using a NI-Daqmx Channel Property Node in Labview
43
Specifying Channel Strings in NI-Daqmx
44
Text Based Ades
44
Programmable NI-Daqmx Properties
46
Calibration
47
Internal/Self-Calibration
47
External Calibration
47
Figure A-1. SCXI-1502 Dimensions
51
Removing the SCXI-1502
54
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