The Astronics/EADS/Racal 1264A is a 6-slot, C-size VXI mainframe designed for rackmount test systems. This lightweight chassis delivers 500 W of usable power from an 800 W auto-ranging supply that automatically selects between 115 V and 230 V input. The pressurized plenum cooling system uses baffling and honeycomb air straighteners to eliminate hot spots, while unique slot blockers prevent airflow diversion through vacant slots. Front panel indicators monitor all seven power supply rails and detect voltage excursions beyond ±10% of nominal (±4% accuracy). Modules recess three inches into the chassis, protecting connectors and cable management. The 1264A accepts optional rackmount kits with slides or ears-only configurations, and supports an aluminum front door for custom connector or display mounting. Over-voltage, over-temperature, over-current, and short-circuit protection safeguard the power delivery system. Easily removable air filters maintain thermal performance in demanding test environments.
## Technical Specifications
• **Model:** 1264A
• **Slot Configuration:** 6 slots, C-size modules
• **Available Power:** 800 W total / 500 W usable
• **Input Voltage:** Auto-ranging 115 V / 230 V AC
• **Power Supply Rails:** Seven monitored rails with front panel status indicators
• **Voltage Monitor Accuracy:** ±4%
• **Voltage Detection Range:** Vnominal ±10%
• **Module Recess Depth:** 3 inches from front panel
• **Weight:** 30 lb (rackmount configuration)
• **Form Factor:** Rackmount capable
## Key Features
• Auto-ranging dual-voltage power supply with multi-rail protection (OVP, OTP, OCP, short-circuit)
• Pressurized plenum with honeycomb air straightener and baffling for uniform thermal distribution
• Slot blockers prevent cooling air bypass through empty slots
• VXIbus-compliant architecture for modular instrumentation integration
• Optional rackmount kit with slides (Option 01) or ears-only (Option 04)
• Optional aluminum front door for connector and display integration
• Removable air filters; optional replacement filter (Option 15) available
• Integral cable tray on 1264C/D models for organized wiring
## Typical Applications
• Automated test and measurement systems
• Production test environments requiring modular instrumentation
• Aerospace and defense test platforms
• Data acquisition and signal routing applications
## Compatibility & Integration
The 1264A follows VXIbus specifications and accommodates C-size module packages. European power cord option (Option 71) supports 230 VAC installations. Blanking plates and air flow blockers (Options 404836 and 456271) optimize thermal management for partially-populated configurations.
