Tektronix VX4320

The Tektronix VX4320 is a VXIbus RF switching module that routes RF and high-frequency digital signals within VXIbus systems. This single-wide, C-size module integrates into C- or D-size VXIbus mainframes to provide versatile signal path management across eight independent 1×4 coaxial switches, each with 50-ohm characteristic impedance. The module supports RF multiplexing to 1.3 GHz and uses SMB male connectors for all coaxial interfaces.

– Technical Specifications

• Module Type: VXIbus RF Switching Module
• Form Factor: Single-wide, C-size VXI module
• Switch Configuration: Eight (8) 1×4 coaxial switches
• Characteristic Impedance: 50 ohms per switch section
• RF Multiplexer Bandwidth: 1.3 GHz
• Connector Type: SMB male snap-on subminiature coaxial connectors
• VXIbus Interface: Local bus relay slave (standard); VXI word serial protocol servant interface (with Option 01)
• Control: SCPI-compatible commands via Option 01 VXI Interface daughter board

– Key Features

• Eight independent switch channels enable flexible RF signal routing
• 50-ohm impedance maintains signal integrity across RF applications
• SMB connectors support compact panel integration
• VXIbus Protocol Events support for commander communication
• Option 01 daughter board adds SCPI command compatibility and word serial protocol control
• Installable in any C- or D-size mainframe slot except slot 0

– Typical Applications

• RF signal multiplexing and switching in test systems
• High-frequency digital signal routing
• VXI-based automated test equipment (ATE) configurations
• Modular signal path management in complex measurement setups

– Compatibility & Integration

The VX4320 integrates with C-size and D-size VXIbus mainframes and coordinates with other Tektronix SurePath family modules including the VX4330, VX4350, and VX4380. System operation as a slave device requires a VXIbus module commander; scanner master controllers such as the VX4101 typically manage multiple modules. Adequate mainframe ventilation and power resources are essential for reliable operation.