Astronics / EADS / Racal 1260-40A Matrix Switch Module

The Astronics/EADS/Racal 1260-40A is a VXIbus matrix switch module engineered for signal routing in aerospace, defense, and telecommunications test systems. This C-size, single-slot module delivers 4×24 two-wire matrix switching with 20 MHz bandwidth and configurable architecture supporting 4×24, dual 4×12, or 8×12 matrix topologies. Non-latching relay architecture ensures safe failsafe operation - signal paths automatically disconnect upon power loss, protecting the Unit Under Test from unwanted signal injection during power cycling. The module switches up to 1 A DC or ACrms at voltages to 250 VDC or VACrms (terminal-terminal or terminal-chassis), with per-channel power handling of 30 W DC or 62.5 VA AC. Relay coil current monitoring provides confidence checking of switch state. Control is delivered via Option 01 Smart Card with message-based interface using standard syntax: "..". Expansion connectors on the front panel enable larger matrix configurations. Mechanical relay endurance exceeds 10,000,000 operations. ## Technical Specifications • Switch Matrix: 4×24 two-wire; configurable as 4×24, dual 4×12, or 8×12 matrices • Bandwidth: 20 MHz • Voltage Rating: 250 VDC or VACrms (terminal-terminal or terminal-chassis) • Current Capacity: 1 A DC or ACrms per channel • Power Dissipation: 30 W DC or 62.5 VA AC per channel • Relay Coil Current: 150 mA base + 40 mA per energized relay (1 A maximum) • Relay Operations: 10,000,000 mechanical cycles • Operating Temperature: 0°C to 55°C • Storage Temperature: −4°C to 75°C • Humidity: 85% ±5% non-condensing below 30°C • Power Supply: +5 V at 0.4 A (standard); +5 V at 2.8 A (with Option 01) ## Key Features • Non-latching relay design with fail-safe power-loss disconnect • Relay coil current monitoring for state verification • Message-based control via Option 01 Smart Card • Front-panel expansion connectors for matrix extension • Compact C-size VXIbus form factor ## Typical Applications • Automated Test Equipment (ATE) signal routing • Aerospace and defense testing systems • Telecommunications signal switching • Multi-channel measurement switching ## Compatibility & Integration • VXI platform integration • Compatible with Racal Instruments 1260-100 and 1260-101 Adapt-a-Switch VXIbus carriers • Legacy Racal Instruments branding