The Astronics/EADS/Racal 1260-45C is a high-density VXIbus switch matrix engineered for complex signal routing in automated test equipment and demanding measurement applications. This single-slot C-size module delivers configurable matrix architectures ranging from four 4×16 two-wire matrices to a single 16×16 two-wire matrix, with external extension capability for larger configurations within a VXI chassis. Compatible with Option 01 and Option 01T smart controllers, the 1260-45C integrates into both legacy and modern test systems.
## Technical Specifications
**Matrix Architecture & Switching Performance**
• Eleven configurable matrix topologies: four 4×16, two 4×32, two 8×16, and single 16×16 two-wire matrices
• Maximum switching: 1 A or 250 VDC per channel; 300 VDC/ACrms terminal-to-terminal or terminal-to-chassis
• Maximum switchable power: 30 WDC or 62.5 VA per channel
• Path resistance ≤ 500 mΩ; isolation > 2 GΩ
• Crosstalk at 1 MHz: < −50 dB
**Frequency Response & Signal Integrity**
• Bandwidth (−3 dB): 25 MHz (4×16 and 4×32), 20 MHz (4×64), 10 MHz (16×16)
• Capacitance Hi-to-Lo: < 50 pF (open channel), < 80 pF (closed channel)
**Relay Control**
• Non-latching guard relays at row inputs revert to open state on power loss, protecting UUT from unwanted signals
• Bypass jumper option enables full latching relay configuration for signal path maintenance during power interruptions
**VXIbus & Power**
• Single-slot C-size VXIbus module
• Power: +5 V at 0.4 A (2.8 A with Option 01)
• Cooling: 1.0 liters/sec airflow, 0.05 mm H₂O backpressure (2.0 liters/sec, 0.2 mm H₂O with Option 01S/T)
## Key Features
• Dual connector options: crimp (discrete wire) or IDC (ribbon cable)
• Message-based Option 01 interface or Option 01T (SCPI + register-based, VXIplug&play support)
• Weight: 3.07 lb (1.38 kg) without Option 01; 3.35 lb (1.51 kg) with Option 01
## Typical Applications
Complex signal routing, mixed-signal ATE, power switching verification, relay matrix expansion
## Compatibility & Integration
Racal Instruments Option 01 (native command set) and Option 01T (SCPI + high-speed register control) smart controllers
