Ametek / VTI Instruments / VXI Technology SMP6001 10 (1×4) Coaxial Tree Module

The Ametek VTI Instruments SMP6001 is a 1×4 coaxial tree module that provides ten independent switching paths for general-purpose RF applications. Part of the SMIP II family, it delivers excellent isolation and crosstalk performance through RF relays and optimized signal routing that eliminates unterminated stub effects. The module integrates into VXIbus-based systems and combines with other SMIP II modules for flexible, high-density switching configurations.

– Technical Specifications

• Configuration: Ten (1×4) coaxial trees
• Frequency Range: >900 MHz
• Relay Type: RF relays with independent control
• Signal Path Design: Short, low-loss coaxial runs from connectors to relays
• Isolation: Excellent—maintained through optimized relay architecture
• Crosstalk: Excellent—achieved via direct coaxial paths and stub elimination
• Control Power: Relays driven from VXIbus +5 V supply
• Platform: VXIbus-compatible; SMIP II family member

– Key Features

• Ten independently controllable relay channels
• Direct coaxial signal paths minimize loss and phase distortion
• Stub-free design prevents reflections and bandwidth limitations
• Modular architecture supports mixed SMIP II configurations
• Compact form factor delivers high channel density
• Relay-based switching ensures low insertion loss and repeatability

– Typical Applications

• Multi-channel RF test and measurement systems
• Automated signal routing in production test
• Laboratory RF circuit characterization
• ATE systems requiring flexible switching topologies

– Compatibility & Integration

The SMP6001 installs as a plug-in module within the VXIbus architecture. Compatible base units—the SMP1100 and SMP1200—accommodate multiple SMIP II modules, supporting up to two modules in the SMP1100 and six in the SMP1200. This architecture enables integrated multi-function switching systems by combining the SMP6001 with complementary SMIP II modules.