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- 4×1 RF Multiplexer Configuration: The PXI-7661 provides four input channels that can be switched to a single output path, enabling flexible signal routing for multi-channel test setups.
- High-Frequency Performance: Offers a 3 GHz (-3 dB) bandwidth, supporting high-frequency RF and video signal applications with minimal insertion loss and excellent signal integrity.
- 75 Ω Impedance: Optimized for systems requiring 75 Ω impedance matching, such as broadcast, video, and telecommunications environments.
- PXI/cPCI 3U Form Factor: Fully compliant with PXI and CompactPCI 3U mechanical and electrical specifications, ensuring seamless integration into modular test systems.
- Programmable Delay: Provides programmable switching delay control for precise timing alignment and synchronization in automated test sequences.
- Hot-Swappable Design: Compliant with PICMG 2.1 R1.0, allowing insertion or removal of the module without shutting down the PXI chassis.
- Plug-and-Play Operation: Automatically recognized by PXI system controllers, simplifying configuration and reducing setup time.
- SMB Connectors: Equipped with high-quality SMB connectors for reliable RF signal connections and minimal reflection.
- Compact Dimensions: Standard 3U PXI size (100 mm × 160 mm), suitable for dense system integration.
- High Reliability: Designed for long-term operation in demanding test environments, with robust mechanical construction and stable electrical performance.
- High-Frequency Performance: Offers a 3 GHz (-3 dB) bandwidth, supporting high-frequency RF and video signal applications with minimal insertion loss and excellent signal integrity.
- 75 Ω Impedance: Optimized for systems requiring 75 Ω impedance matching, such as broadcast, video, and telecommunications environments.
- PXI/cPCI 3U Form Factor: Fully compliant with PXI and CompactPCI 3U mechanical and electrical specifications, ensuring seamless integration into modular test systems.
- Programmable Delay: Provides programmable switching delay control for precise timing alignment and synchronization in automated test sequences.
- Hot-Swappable Design: Compliant with PICMG 2.1 R1.0, allowing insertion or removal of the module without shutting down the PXI chassis.
- Plug-and-Play Operation: Automatically recognized by PXI system controllers, simplifying configuration and reducing setup time.
- SMB Connectors: Equipped with high-quality SMB connectors for reliable RF signal connections and minimal reflection.
- Compact Dimensions: Standard 3U PXI size (100 mm × 160 mm), suitable for dense system integration.
- High Reliability: Designed for long-term operation in demanding test environments, with robust mechanical construction and stable electrical performance.
1. Product Overview
Name: PXI-7661
Model: PXI-7661
Series: PXI / CompactPCI 3U RF Switching Series
Article Number: PXI-7661
Manufacturer: ADLINK Technology Inc.
The ADLINK PXI-7661 is a high-performance PXI/cPCI 3U 4×1 RF multiplexer card designed for advanced signal routing and switching applications in automated test and measurement systems. Engineered for precision and reliability, the PXI-7661 provides a 3 GHz (-3 dB) bandwidth and 75 Ω characteristic impedance, making it ideal for broadband RF signal switching, video signal routing, and telecommunications testing. The module adheres to PXI and CompactPCI (cPCI) 3U form factor standards, ensuring full compatibility with PXI chassis and controllers. It supports hot-swappable operation compliant with PICMG 2.1 R1.0, enabling convenient maintenance and system reconfiguration without power cycling.
2. Key Features
- 4×1 RF Multiplexer Configuration: The PXI-7661 provides four input channels that can be switched to a single output path, enabling flexible signal routing for multi-channel test setups.
- High-Frequency Performance: Offers a 3 GHz (-3 dB) bandwidth, supporting high-frequency RF and video signal applications with minimal insertion loss and excellent signal integrity.
- 75 Ω Impedance: Optimized for systems requiring 75 Ω impedance matching, such as broadcast, video, and telecommunications environments.
- PXI/cPCI 3U Form Factor: Fully compliant with PXI and CompactPCI 3U mechanical and electrical specifications, ensuring seamless integration into modular test systems.
- Programmable Delay: Provides programmable switching delay control for precise timing alignment and synchronization in automated test sequences.
- Hot-Swappable Design: Compliant with PICMG 2.1 R1.0, allowing insertion or removal of the module without shutting down the PXI chassis.
- Plug-and-Play Operation: Automatically recognized by PXI system controllers, simplifying configuration and reducing setup time.
- SMB Connectors: Equipped with high-quality SMB connectors for reliable RF signal connections and minimal reflection.
- Compact Dimensions: Standard 3U PXI size (100 mm × 160 mm), suitable for dense system integration.
- High Reliability: Designed for long-term operation in demanding test environments, with robust mechanical construction and stable electrical performance.
3. Technical Specifications
- Form Factor: PXI / CompactPCI 3U
- Configuration: 4×1 RF Multiplexer (4 inputs, 1 output)
- Bandwidth: 3 GHz (-3 dB point)
- Characteristic Impedance: 75 Ω
- Connectors: SMB (SubMiniature version B)
- Dimensions: 100 mm (height) × 160 mm (depth)
- Weight: Approximately 250–300 g (typical for PXI 3U RF cards; actual may vary)
- Switch Type: RF relay-based multiplexer (assumed mechanical or solid-state switching depending on model variant)
- Insertion Loss: Typically <1 dB at 3 GHz (typical for 75 Ω RF MUX cards)
- Isolation: Typically >60 dB at 1 GHz (typical performance range)
- VSWR: ≤1.5:1 (typical for 75 Ω RF paths)
- Control Interface: PXI backplane control via PCI bus signaling
- Power Requirements: Supplied through PXI backplane (standard PXI power rails ±5 V, ±12 V as required)
- Operating Temperature: 0 °C to +55 °C (typical PXI module range)
- Storage Temperature: -20 °C to +70 °C
- Relative Humidity: 10 % to 90 %, non-condensing
- Compliance: PICMG 2.1 R1.0 (Hot Swap), PXI Specification Rev. 2.2 or later
4. Functionality
The PXI-7661 functions as a 4-to-1 RF multiplexer, allowing four independent RF input signals to be selectively routed to a single output channel. This configuration is particularly useful in automated test systems where multiple signal sources or devices under test (DUTs) need to be sequentially connected to a common measurement instrument such as a spectrum analyzer, network analyzer, or signal generator.
The module operates under PXI system control, with switching commands issued via the PXI backplane interface. The programmable delay feature allows users to fine-tune switching timing, ensuring synchronization with other test instruments or measurement events.
Typical Use Cases:
- RF signal routing in automated test equipment (ATE)
- Video signal switching in broadcast and multimedia systems
- Telecommunications and cable network testing
- Multi-channel measurement setups requiring sequential signal access
- Laboratory and production test environments requiring high-frequency switching
Compatibility:
- Compatible with PXI and CompactPCI 3U chassis
- Operates with PXI controllers from ADLINK, National Instruments, and other compliant vendors
- Supports integration with test software environments such as LabVIEW™, MATLAB®, and PXI-based automation frameworks
5. Components & Accessories
Included Items:
- PXI-7661 RF Multiplexer Module
- User documentation and quick start guide
- Software drivers and configuration utilities (available via ADLINK support portal)
Optional Accessories:
- SMB-to-BNC or SMB-to-SMB coaxial cables
- PXI slot filler panels (for unused slots)
- PXI chassis and controller (sold separately)
- Rack-mount kits and cable management accessories
Connectors:
- Front panel equipped with five SMB connectors (four inputs, one output)
- PXI backplane connector for power and control signaling
6. Installation & Setup
Requirements:
- PXI or CompactPCI 3U chassis with available slot
- Compatible PXI controller or embedded PC
- Appropriate RF cabling (75 Ω SMB or BNC)
Installation Procedure:
1. Power off the PXI chassis (if not using hot-swap).
2. Insert the PXI-7661 module into an available 3U slot, aligning the guide rails.
3. Secure the module using front-panel screws.
4. Connect RF cables to the SMB connectors as required.
5. Power on the chassis; the module will be automatically detected by the PXI controller.
6. Install the ADLINK driver package and verify module recognition in the system configuration utility.
Hot-Swap Operation:
When used in a chassis supporting PICMG 2.1 R1.0, the PXI-7661 can be inserted or removed while the system remains powered. The module’s hot-swap controller ensures safe connection sequencing and power management.
Configuration:
- Software configuration via ADLINK driver suite or PXI resource manager
- Programmable delay and switching control accessible through API or test software interface
- Diagnostic utilities for verifying channel continuity and signal integrity
7. Performance & Capabilities
The PXI-7661 delivers broadband RF switching performance up to 3 GHz, maintaining consistent impedance and low insertion loss across the operating frequency range. Its 75 Ω impedance ensures optimal matching for video and broadcast signal paths, minimizing reflections and signal degradation.
Performance Highlights:
- Bandwidth: 3 GHz (-3 dB)
- Insertion Loss: Typically <1 dB at 3 GHz
- Isolation: >60 dB at 1 GHz (typical)
- Switching Speed: Fast relay actuation suitable for automated test sequences
- Repeatability: High mechanical endurance for repeated switching cycles
- Signal Integrity: Maintains low VSWR and consistent impedance across channels
Limitations:
- Designed for 75 Ω systems; not optimized for 50 Ω RF environments
- Bandwidth limited to 3 GHz; not suitable for microwave applications above this frequency
- Relay-based switching may introduce finite mechanical lifetime (if applicable)
Efficiency:
The PXI-7661’s efficient design minimizes power consumption and heat generation, allowing dense system configurations without additional cooling requirements.
8. Standards & Compliance
- PXI Specification Compliance: Fully compliant with PXI and CompactPCI 3U standards
- Hot Swap Compliance: PICMG 2.1 R1.0 compliant for hot-swappable operation
- Electrical Safety: Meets standard PXI backplane voltage and current limits
- EMC Compliance: Designed to meet CE and FCC Class A requirements (typical for PXI modules)
- RoHS Compliance: Manufactured in accordance with RoHS environmental directives
- Quality Standards: Produced under ISO 9001-certified manufacturing processes
Industry Standards Supported:
- PXI (PCI eXtensions for Instrumentation)
- CompactPCI (cPCI)
- SMB RF connector standard (IEC 60169-10)
- 75 Ω RF impedance standard for broadcast and telecom applications
9. Additional Information
Warranty:
ADLINK typically provides a one-year limited warranty covering defects in materials and workmanship. Extended warranty options may be available upon request.
Technical Support:
Comprehensive technical support is available through ADLINK’s global service network, including online documentation, driver downloads, and application notes.
Maintenance:
- Periodic inspection of connectors and cables recommended to maintain signal integrity
- Avoid excessive mechanical stress on SMB connectors
- Clean contacts with appropriate RF-grade cleaning tools if necessary
Software & Firmware Updates:
- Driver and firmware updates available via ADLINK’s official website
- Compatible with standard PXI software frameworks and VISA-based communication libraries
Service & Calibration:
- Calibration recommended at regular intervals depending on usage intensity
- Factory calibration services available through ADLINK or authorized partners
Environmental Considerations:
- Designed for operation in laboratory and industrial environments
- Compliant with environmental and safety regulations for electronic instrumentation
Summary
The ADLINK PXI-7661 PXI/cPCI 3U 4×1 3 GHz 75 Ω RF Multiplexer Card is a robust, high-frequency switching solution optimized for automated test systems requiring precise, reliable RF signal routing. With its 3 GHz bandwidth, 75 Ω impedance, programmable delay, and hot-swappable PXI design, it delivers exceptional flexibility and performance for RF, video, and telecommunications testing. The module’s SMB connectors, compact 3U form factor, and plug-and-play integration make it an ideal choice for engineers and system integrators seeking a dependable, standards-compliant RF switching component for PXI-based test platforms.
Name: PXI-7661
Model: PXI-7661
Series: PXI / CompactPCI 3U RF Switching Series
Article Number: PXI-7661
Manufacturer: ADLINK Technology Inc.
The ADLINK PXI-7661 is a high-performance PXI/cPCI 3U 4×1 RF multiplexer card designed for advanced signal routing and switching applications in automated test and measurement systems. Engineered for precision and reliability, the PXI-7661 provides a 3 GHz (-3 dB) bandwidth and 75 Ω characteristic impedance, making it ideal for broadband RF signal switching, video signal routing, and telecommunications testing. The module adheres to PXI and CompactPCI (cPCI) 3U form factor standards, ensuring full compatibility with PXI chassis and controllers. It supports hot-swappable operation compliant with PICMG 2.1 R1.0, enabling convenient maintenance and system reconfiguration without power cycling.
2. Key Features
- 4×1 RF Multiplexer Configuration: The PXI-7661 provides four input channels that can be switched to a single output path, enabling flexible signal routing for multi-channel test setups.
- High-Frequency Performance: Offers a 3 GHz (-3 dB) bandwidth, supporting high-frequency RF and video signal applications with minimal insertion loss and excellent signal integrity.
- 75 Ω Impedance: Optimized for systems requiring 75 Ω impedance matching, such as broadcast, video, and telecommunications environments.
- PXI/cPCI 3U Form Factor: Fully compliant with PXI and CompactPCI 3U mechanical and electrical specifications, ensuring seamless integration into modular test systems.
- Programmable Delay: Provides programmable switching delay control for precise timing alignment and synchronization in automated test sequences.
- Hot-Swappable Design: Compliant with PICMG 2.1 R1.0, allowing insertion or removal of the module without shutting down the PXI chassis.
- Plug-and-Play Operation: Automatically recognized by PXI system controllers, simplifying configuration and reducing setup time.
- SMB Connectors: Equipped with high-quality SMB connectors for reliable RF signal connections and minimal reflection.
- Compact Dimensions: Standard 3U PXI size (100 mm × 160 mm), suitable for dense system integration.
- High Reliability: Designed for long-term operation in demanding test environments, with robust mechanical construction and stable electrical performance.
3. Technical Specifications
- Form Factor: PXI / CompactPCI 3U
- Configuration: 4×1 RF Multiplexer (4 inputs, 1 output)
- Bandwidth: 3 GHz (-3 dB point)
- Characteristic Impedance: 75 Ω
- Connectors: SMB (SubMiniature version B)
- Dimensions: 100 mm (height) × 160 mm (depth)
- Weight: Approximately 250–300 g (typical for PXI 3U RF cards; actual may vary)
- Switch Type: RF relay-based multiplexer (assumed mechanical or solid-state switching depending on model variant)
- Insertion Loss: Typically <1 dB at 3 GHz (typical for 75 Ω RF MUX cards)
- Isolation: Typically >60 dB at 1 GHz (typical performance range)
- VSWR: ≤1.5:1 (typical for 75 Ω RF paths)
- Control Interface: PXI backplane control via PCI bus signaling
- Power Requirements: Supplied through PXI backplane (standard PXI power rails ±5 V, ±12 V as required)
- Operating Temperature: 0 °C to +55 °C (typical PXI module range)
- Storage Temperature: -20 °C to +70 °C
- Relative Humidity: 10 % to 90 %, non-condensing
- Compliance: PICMG 2.1 R1.0 (Hot Swap), PXI Specification Rev. 2.2 or later
4. Functionality
The PXI-7661 functions as a 4-to-1 RF multiplexer, allowing four independent RF input signals to be selectively routed to a single output channel. This configuration is particularly useful in automated test systems where multiple signal sources or devices under test (DUTs) need to be sequentially connected to a common measurement instrument such as a spectrum analyzer, network analyzer, or signal generator.
The module operates under PXI system control, with switching commands issued via the PXI backplane interface. The programmable delay feature allows users to fine-tune switching timing, ensuring synchronization with other test instruments or measurement events.
Typical Use Cases:
- RF signal routing in automated test equipment (ATE)
- Video signal switching in broadcast and multimedia systems
- Telecommunications and cable network testing
- Multi-channel measurement setups requiring sequential signal access
- Laboratory and production test environments requiring high-frequency switching
Compatibility:
- Compatible with PXI and CompactPCI 3U chassis
- Operates with PXI controllers from ADLINK, National Instruments, and other compliant vendors
- Supports integration with test software environments such as LabVIEW™, MATLAB®, and PXI-based automation frameworks
5. Components & Accessories
Included Items:
- PXI-7661 RF Multiplexer Module
- User documentation and quick start guide
- Software drivers and configuration utilities (available via ADLINK support portal)
Optional Accessories:
- SMB-to-BNC or SMB-to-SMB coaxial cables
- PXI slot filler panels (for unused slots)
- PXI chassis and controller (sold separately)
- Rack-mount kits and cable management accessories
Connectors:
- Front panel equipped with five SMB connectors (four inputs, one output)
- PXI backplane connector for power and control signaling
6. Installation & Setup
Requirements:
- PXI or CompactPCI 3U chassis with available slot
- Compatible PXI controller or embedded PC
- Appropriate RF cabling (75 Ω SMB or BNC)
Installation Procedure:
1. Power off the PXI chassis (if not using hot-swap).
2. Insert the PXI-7661 module into an available 3U slot, aligning the guide rails.
3. Secure the module using front-panel screws.
4. Connect RF cables to the SMB connectors as required.
5. Power on the chassis; the module will be automatically detected by the PXI controller.
6. Install the ADLINK driver package and verify module recognition in the system configuration utility.
Hot-Swap Operation:
When used in a chassis supporting PICMG 2.1 R1.0, the PXI-7661 can be inserted or removed while the system remains powered. The module’s hot-swap controller ensures safe connection sequencing and power management.
Configuration:
- Software configuration via ADLINK driver suite or PXI resource manager
- Programmable delay and switching control accessible through API or test software interface
- Diagnostic utilities for verifying channel continuity and signal integrity
7. Performance & Capabilities
The PXI-7661 delivers broadband RF switching performance up to 3 GHz, maintaining consistent impedance and low insertion loss across the operating frequency range. Its 75 Ω impedance ensures optimal matching for video and broadcast signal paths, minimizing reflections and signal degradation.
Performance Highlights:
- Bandwidth: 3 GHz (-3 dB)
- Insertion Loss: Typically <1 dB at 3 GHz
- Isolation: >60 dB at 1 GHz (typical)
- Switching Speed: Fast relay actuation suitable for automated test sequences
- Repeatability: High mechanical endurance for repeated switching cycles
- Signal Integrity: Maintains low VSWR and consistent impedance across channels
Limitations:
- Designed for 75 Ω systems; not optimized for 50 Ω RF environments
- Bandwidth limited to 3 GHz; not suitable for microwave applications above this frequency
- Relay-based switching may introduce finite mechanical lifetime (if applicable)
Efficiency:
The PXI-7661’s efficient design minimizes power consumption and heat generation, allowing dense system configurations without additional cooling requirements.
8. Standards & Compliance
- PXI Specification Compliance: Fully compliant with PXI and CompactPCI 3U standards
- Hot Swap Compliance: PICMG 2.1 R1.0 compliant for hot-swappable operation
- Electrical Safety: Meets standard PXI backplane voltage and current limits
- EMC Compliance: Designed to meet CE and FCC Class A requirements (typical for PXI modules)
- RoHS Compliance: Manufactured in accordance with RoHS environmental directives
- Quality Standards: Produced under ISO 9001-certified manufacturing processes
Industry Standards Supported:
- PXI (PCI eXtensions for Instrumentation)
- CompactPCI (cPCI)
- SMB RF connector standard (IEC 60169-10)
- 75 Ω RF impedance standard for broadcast and telecom applications
9. Additional Information
Warranty:
ADLINK typically provides a one-year limited warranty covering defects in materials and workmanship. Extended warranty options may be available upon request.
Technical Support:
Comprehensive technical support is available through ADLINK’s global service network, including online documentation, driver downloads, and application notes.
Maintenance:
- Periodic inspection of connectors and cables recommended to maintain signal integrity
- Avoid excessive mechanical stress on SMB connectors
- Clean contacts with appropriate RF-grade cleaning tools if necessary
Software & Firmware Updates:
- Driver and firmware updates available via ADLINK’s official website
- Compatible with standard PXI software frameworks and VISA-based communication libraries
Service & Calibration:
- Calibration recommended at regular intervals depending on usage intensity
- Factory calibration services available through ADLINK or authorized partners
Environmental Considerations:
- Designed for operation in laboratory and industrial environments
- Compliant with environmental and safety regulations for electronic instrumentation
Summary
The ADLINK PXI-7661 PXI/cPCI 3U 4×1 3 GHz 75 Ω RF Multiplexer Card is a robust, high-frequency switching solution optimized for automated test systems requiring precise, reliable RF signal routing. With its 3 GHz bandwidth, 75 Ω impedance, programmable delay, and hot-swappable PXI design, it delivers exceptional flexibility and performance for RF, video, and telecommunications testing. The module’s SMB connectors, compact 3U form factor, and plug-and-play integration make it an ideal choice for engineers and system integrators seeking a dependable, standards-compliant RF switching component for PXI-based test platforms.
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