The Tektronix VX4330 is a 120-channel relay multiplexer module for VXIbus systems, delivering high-density signal routing in automated test and measurement applications. This PCB assembly integrates six independent 1×10 4-wire multiplexer sections, each software-configurable as dual 1×10 2-wire muxes, a single 1×20 2-wire mux, or a 1×40 1-wire mux. Adjacent sections cascade to form larger topologies: 1×60 4-wire, 1×120 2-wire, or 1×240 1-wire multiplexers.
Technical Specifications
Switching Performance
• Maximum switching current: 2 A per contact
• Maximum switching voltage: 220 VDC, 250 VAC per contact
• Maximum switching power: 60 W, 125 VA per contact
• Relay type: Latching relays for low-power, low-noise operation
Bandwidth
• 1×240 1-wire scanner: 3 MHz (-3 dB)
• 1×20 2-wire scanner: 10 MHz (-3 dB)
Interface & Connectors
• VXI local bus slave architecture
• Two 160-pin DIN front panel connectors
– Key Features
• Six independent 1×10 4-wire multiplexer sections with flexible reconfiguration
• Cascadable topology supports configurations up to 1×240 1-wire or 1×120 2-wire
• Latching relay design minimizes power consumption and switching noise
• Low-cost VXI local bus slave interface for streamlined system integration
– Typical Applications
• Automated signal routing in high-channel-count test systems
• Multi-channel data acquisition and instrumentation
• Relay-based matrix switching for analog and low-frequency digital signals
• Test environments requiring flexible, software-controlled multiplexing
– Compatibility & Integration
Designed for VXIbus mainframe systems. Option 01 enables control of up to 11 additional Tektronix relay modules via the VXI P2 local bus, supporting distributed switching architectures across multiple modules.
