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NI Switches Documentation
Electromechanical Relays
NI Switches
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Electromechanical Relays
NI uses the following types of electromechanical relays:
Armature Relays
Transfer Switches
Reed Relays
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Using Help
Conventions
Navigating Help
Searching Help
Printing Help File Topics
Fundamentals
Relay Forms
Relay Types
Electromechanical Relays
Armature Relays
Transfer Switches
Reed Relays
Solid-State Relays (SSR)
FET Switches
Topologies
General-Purpose
Multiplexer
Matrix
Transfer Switches
X-Wire Switching
General Switching Considerations
Contact Resistance
Relay Life
Path Resistance
Thermal EMF and Offset Voltage
Relay Operation
Cycle Process
Settling Time
Relay Count
Switching Inductive Loads
Switching Capacitive Loads
Switching Capacity
Switching Voltage
Switching Current
Switching Power
Reed Relay Protection
Bounce
Arcing
Capacitance
Inrush Current
Inrush Current Protection
Board Layout and Topology
Example System
RF Switching Considerations
Characteristic Impedance
Rise Time
Bandwidth and Insertion Loss
Voltage Standing Wave Ratio (VSWR)
Crosstalk
Isolation
Scanning
Software Trigger Scanning
Synchronous Scanning
Handshaking
Installing and Configuring Devices
PXI Devices
Installing a PXI Switch
Configuring a PXI Switch
SCXI Devices
Installing an SCXI Switch
Configuring an SCXI Switch
Controlling and Triggering an SCXI Switch
Devices
NI PXI-2501/2503
PXI-2501 Hardware Diagram
PXI-2503 Hardware Diagram
1-Wire 48x1 Amplified Multiplexer Topology
1-Wire 48x1 Multiplexer Topology
2-Wire 24x1 Amplified Multiplexer Topology
2-Wire 24x1 Multiplexer Topology
2-Wire Dual 12x1 Multiplexer Topology
2-Wire Quad 6x1 Multiplexer Topology
4-Wire 12x1 Multiplexer Topology
2-Wire 4x6 Matrix Topology
Amplifier
Cold-Junction Temperature Sensor Channel
Current-Loop Receivers
Matrix Expansion
Multiplexer Expansion
Triggering
NI PXI-2527
Hardware Diagram
1-Wire 64x1 Multiplexer Topology
1-Wire Dual 32x1 Multiplexer Topology
2-Wire 32x1 Multiplexer Topology
2-wire Dual 16x1 Multiplexer Topology
4-Wire 16x1 Multiplexer Topology
Independent Topology
Thermocouple Measurement
Triggering
Relay Replacement
NI PXI-2529
Hardware Diagram
2-Wire 4x32 Matrix Topology
2-Wire 8x16 Matrix Topology
2-Wire Dual 4x16 Matrix Topology
Matrix Expansion
Using the NI TB-2634
Using the NI TB-2635
Using the NI TB-2636
Triggering
Relay Replacement
NI PXI-2530
Hardware Diagram
1-Wire 128x1 Multiplexer Topology
1-Wire Dual 64x1 Multiplexer Topology
1-Wire Quad 32x1 Multiplexer Topology
1-Wire Octal 16x1 Multiplexer Topology
2-Wire 64x1 Multiplexer Topology
2-Wire Dual 32x1 Multiplexer Topology
2-Wire Quad 16x1 Multiplexer Topology
4-Wire 32x1 Multiplexer Topology
4-Wire Dual 16x1 Multiplexer Topology
1-Wire 4x32 Matrix Topology
1-Wire 8x16 Matrix Topology
2-Wire 4x16 Matrix Topology
Independent Topology
Matrix Expansion
Using the NI TB-2631
Using the NI TB-2632
Signal Connections
1-Wire Multiplexer and Independent Topologies
2-Wire Multiplexer Topologies
4-Wire Multiplexer Topologies
1-Wire 4x32 Matrix Topology
1-Wire 8x16 Matrix Topology
2-Wire 4x16 Matrix Topology
Triggering
Relay Replacement
NI PXI-2532
Hardware Diagram
1-Wire 4x128 Matrix Topology
1-Wire 8x64 Matrix Topology
1-Wire 16x32 Matrix Topology
1-Wire Dual 4x64 Matrix Topology
1-Wire Dual 8x32 Matrix Topology
1-Wire Dual 16x16 Matrix Topology
1-Wire Sixteen 2x16 Matrix Topology
2-Wire 4x64 Matrix Topology
2-Wire 8x32 Matrix Topology
2-Wire 16x16 Matrix Topology
Matrix Expansion
Triggering
Relay Replacement
NI PXI-2533
Hardware Diagram
1-Wire 4x64 Matrix Topology
Triggering
NI PXI-2534
Hardware Diagram
1-Wire 8x32 Matrix Topology
Triggering
NI PXI-2535
Hardware Diagram
1-Wire 4x136 Matrix Topology
Matrix Expansion
Triggering
NI PXI-2536
Hardware Diagram
1-Wire 8x68 Matrix Topology
Matrix Expansion
Triggering
NI PXI-2545
Front Panel
Hardware Diagram
Terminated 4x1 Multiplexer (SP4T) Topology
Triggering
NI PXI-2546
Front Panel
Hardware Diagram
Dual 4x1 Multiplexer (Dual SP4T) Topology
Triggering
NI PXI-2547
Front Panel
Hardware Diagram
8x1 Multiplexer (SP8T) Topology
Triggering
NI PXI-2548
Front Panel
Hardware Diagram
Quad SPDT Topology
Triggering
NI PXI-2549
Front Panel
Hardware Diagram
Dual Terminated SPDT Topology
Triggering
NI PXI-2554
Front Panel
Hardware Diagram
4x1 Multiplexer (SP4T) Topology
Triggering
NI PXI-2555
Front Panel
Hardware Diagram
Terminated 4x1 Multiplexer (SP4T) Topology
Triggering
NI PXI-2556
Front Panel
Hardware Diagram
Dual 4x1 Multiplexer (Dual SP4T) Topology
Triggering
NI PXI-2557
Front Panel
Hardware Diagram
8x1 Multiplexer (SP8T) Topology
Triggering
NI PXI-2558
Front Panel
Hardware Diagram
Quad SPDT Topology
Triggering
NI PXI-2559
Front Panel
Hardware Diagram
Dual Terminated SPDT Topology
Triggering
NI PXI-2564
Hardware Diagram
16-SPST Topology
Triggering
Relay Replacement
NI PXI-2565
Hardware Diagram
16-SPST Topology
Flyback Voltage Protection
Triggering
Relay Replacement
NI PXI-2566
Hardware Diagram
16-SPDT Topology
Triggering
Relay Replacement
NI PXI-2567
Hardware Diagram
Independent Topology
Available 5 V and 12 V Sources
Triggering
NI PXI-2568
Hardware Diagram
31-SPST Topology
Triggering
Relay Replacement
NI PXI-2569
Hardware Diagram
100-SPST Topology
Triggering
Relay Replacement
NI PXI-2570
Hardware Diagram
40-SPDT Topology
Triggering
Relay Replacement
NI PXI-2575
Hardware Diagram
1-Wire 196x1 Multiplexer Topology
2-Wire 95x1 Multiplexer Topology
2-Wire 98x1 Multiplexer Topology
Triggering
Relay Replacement
NI PXI-2576
Hardware Diagram
2-Wire Sixteen 4x1 Multiplexer Topology
2-Wire Octal 8x1 Multiplexer Topology
2-Wire Quad 16x1 Multiplexer Topology
2-Wire Dual 32x1 Multiplexer Topology
2-Wire 64x1 Multiplexer Topology
Independent Topology
Triggering
Relay Replacement
NI PXI-2584
Hardware Diagram
1-Wire Dual 6x1 Multiplexer Topology
1-Wire 12x1 Multiplexer Topology
2-Wire 6x1 Multiplexer Topology
Independent Topology
Interleaved Multiplexer (User-Implemented)
Signal Connections
Triggering
Relay Replacement
NI PXI-2585
Hardware Diagram
1-Wire 10x1 Multiplexer Topology
Triggering
Relay Replacement
NI PXI-2586
Hardware Diagram
10-SPST Topology
Triggering
Relay Replacement
NI PXI-2590
Hardware Diagram
4x1 Multiplexer Topology
Triggering
NI PXI-2591
Hardware Diagram
4x1 Multiplexer Topology
Triggering
NI PXI-2593
Front Panel
Hardware Diagram
16x1 Multiplexer Topology
8x1 Terminated Multiplexer Topology
Dual 4x1 Terminated Multiplexer Topology
Dual 8x1 Multiplexer Topology
Independent Topology
3x1 Multiplexers
Dimensionally Flexible Sparse Matrix
Triggering
NI PXI-2594/2595
Front Panels
Hardware Diagram
4x1 Multiplexer Topology
Triggering
NI PXI-2596
Front Panel
Hardware Diagram
Dual 6x1 Multiplexer Topology
Triggering
NI PXI-2597
Front Panel
Hardware Diagram
6x1 Multiplexer Topology
Triggering
NI PXI-2598
Front Panel
Hardware Diagram
Dual Transfer Switch Topology
Triggering
NI PXI-2599
Front Panel
Hardware Diagram
2-SPDT Topology
Triggering
NI SCXI-1127/1128
Hardware Diagram
1-Wire 64x1 Multiplexer Topology
2-Wire 32x1 Multiplexer Topology
4-Wire 16x1 Multiplexer Topology
2-Wire 4x8 Matrix Topology
Cold-Junction Temperature Sensor Channel
Current-Loop Receiving
High-Voltage Analog Bus (HVAB)
Independent Topology
Matrix Expansion
Multiplexer Expansion
Triggering
Relay Replacement
NI SCXI-1129
Hardware Diagram
2-Wire 16x16 Matrix Topology
2-Wire 4x64 Matrix Topology
2-Wire 8x32 Matrix Topology
2-Wire Quad 4x16 Matrix Topology
2-Wire Dual 4x32 Matrix Topology
2-Wire Dual 8x16 Matrix Topology
High-Voltage Analog Bus (HVAB)
Matrix Expansion
Triggering
Relay Replacement
NI SCXI-1130
Hardware Diagram
1-Wire 256x1 Multiplexer Topology
1-Wire Dual 128x1 Multiplexer Topology
1-Wire Quad 64x1 Multiplexer Topology
1-Wire Octal 32x1 Multiplexer Topology
1-Wire Sixteen 16x1 Multiplexer Topology
2-Wire 128x1 Multiplexer Topology
2-Wire Quad 32x1 Multiplexer Topology
2-Wire Octal 16x1 Multiplexer Topology
4-Wire 64x1 Multiplexer Topology
4-Wire Quad 16x1 Multiplexer Topology
1-Wire 4x64 Matrix Topology
1-Wire 8x32 Matrix Topology
2-Wire 4x32 Matrix Topology
Independent Topology
Signal Connections
1-Wire Multiplexer and Independent Topologies
2-Wire Multiplexer Topologies
4-Wire Multiplexer Topologies
1-Wire 4x64 Matrix Topology
1-Wire 8x32 Matrix Topology
2-Wire 4x32 Matrix Topology
Matrix Expansion
Triggering
Relay Replacement
NI SCXI-1160
Hardware Diagram
16-SPDT Topology
Contact Protection for Inductive Load Connections
Jumpers
NI SCXI-1161
Hardware Diagram
8-SPDT Topology
Contact Protection for Inductive Load Connections
Jumpers
NI SCXI-1163R
Hardware Diagram
Octal 4x1 Multiplexer Topology
Contact Protection
Jumpers
NI SCXI-1166
Hardware Diagram
32-SPDT Topology
Triggering
Relay Replacement
NI SCXI-1167
Hardware Diagram
Independent Topology
Available 5 V Source
Triggering
NI SCXI-1169
Hardware Diagram
100-SPST Topology
Triggering
Relay Replacement
NI SCXI-1175
Hardware Diagram
1-Wire 196x1 Multiplexer Topology
2-Wire 95x1 Multiplexer Topology
2-Wire 98x1 Multiplexer Topology
High-Voltage Analog Bus (HVAB)
Triggering
Relay Replacement
NI SCXI-1190
Hardware Diagram
Quad 4x1 Multiplexer Topology
Relay Replacement
NI SCXI-1191
Hardware Diagram
Quad 4x1 Multiplexer Topology
NI SCXI-1192
Hardware Diagram
8-SPDT Topology
NI SCXI-1193
Front Panel
Hardware Diagram
16x1 Terminated Multiplexer Topology
32x1 Multiplexer Topology
Dual 16x1 Multiplexer Topology
Quad 8x1 Multiplexer Topology
Dual 8x1 Terminated Multiplexer Topology
Quad 4x1 Terminated Multiplexer Topology
Independent Topology
3x1 Multiplexers
Dimensionally Flexible Sparse Matrix
Reset Algorithms
Triggering
Relay Replacement
NI SCXI-1194/1195
Front Panels
Hardware Diagram
Quad 4x1 Multiplexer Topology
Triggering
Integration and System Considerations
Environment
Chassis Recommendations
PXI Express Compatibility
Programming with NI-SWITCH
Getting Started
Using NI-SWITCH in LabVIEW
Considerations for using the LabVIEW Real-Time Module
Using NI-SWITCH in LabWindows/CVI
Using NI-SWITCH in Visual C/C++
Using NI-SWITCH in Visual Basic
Programming Flow
Initialization
Operation Modes
Close
Setting and Checking Properties and Attributes
Setting Properties and Attributes Before Reading Them
Features
Scanning
Software Trigger Scanning
Scanning NI Switches with NI Digital Multimeters
Single Module Scanning
Scan Lists
Synchronous
Handshaking
Multiple Module Scanning
Multiple Module Scan Lists
Synchronous
Handshaking
Adding Additional Settling Time
Disabling Digital Filtering
Immediate Operations
Setting Source and Configuration Channels
Simulating a Switch
Examples
Legacy Programming
NI SCXI-1160
NI SCXI-1161
NI SCXI-1163R
NI SCXI-1190/1191
NI SCXI-1192
NI SCXI-1127/1128
NI SCXI-1129
Error and Status Codes
Operating System Support
Programming with NI-DAQmx
Using NI Switches in IVI
Glossary
Important Information
Warranty
Copyright
Trademarks
Patents
Warning Regarding the Use of NI Products
Technical Support and Professional Services
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