The Ametek/VTI Instruments/VXI Technology SM7270N is a dual SPDT non-latching relay switch module for signal routing in automated test equipment and VXIbus systems. It combines Narda relays with SMA connectors to deliver 50 Ω impedance switching across DC to 18 GHz with switching speeds typically under 15 ms. The module operates on 12 VDC and guarantees one to two million cycles per switch position without performance degradation, making it suitable for demanding RF/microwave and military applications requiring MIL-S-3928 compliance.
Technical Specifications
• Switch Configuration: Dual SPDT non-latching
• Relay Type: Narda relays
• Frequency Range: DC to 18 GHz
• RF Impedance: 50 Ω
• Switching Speed: < 15 ms (typical)
• Connectors: SMA
• Operational Cycles: 1 to 2 million cycles per switch position
• Coil Voltage: 12 VDC
– Key Features
• Non-latching actuation for deterministic state control
• SMA connectors for reliable RF connections
• Narda relay construction ensures performance in RF and microwave environments
• TTL logic compatibility standard
• Optional indicator circuitry available
• Self-termination techniques eliminate need for external RF cavity
• Single Pole Double Throw configuration enables two-position signal routing per channel
– Typical Applications
• Automated test equipment (ATE) signal routing
• RF/microwave test and measurement systems
• Military and aerospace test platforms
• High-cycle signal switching and multiplexing
• Multi-frequency signal management in modular test systems
– Compatibility & Integration
Designed for VXIbus modular systems with TTL logic interface. Meets MIL-S-3928 standards for military and commercial applications. RF performance specifications (insertion loss, isolation, VSWR) are optimized across the DC to 18 GHz range.
