Astronics / EADS / Racal 1261AH 13-Slot High-Performance, High-Power VXI Mainframe

The Astronics / EADS / Racal 1261AH is a 13-slot, C-size VXI mainframe engineered for high-power instrumentation and data acquisition systems in demanding applications. This 1260 Series platform delivers substantial power capacity and advanced thermal management to support multiple VXI modules in rack-mount or benchtop configurations. The mainframe combines intelligent system monitoring, efficient power delivery, and fault-tolerant cooling to ensure reliable operation in test environments.

Technical Specifications Form Factor & Architecture

13-slot, C-size VXI mainframe compliant with VXI specification B.7.2.3

Available in 7U (12.220 inches) and 9U rack-mount heights

Integrated cable tray and hinged plexiglass access door Power Delivery

High-power designation with advanced supply design featuring minimal ripple and noise

Direct backplane connection with high dynamic current capability

230 Volt option available Thermal Management

Pressurized plenum system with molded card guides for even airflow distribution

Fault-tolerant triple-fan assembly - two fans maintain full cooling if one fails

HI/LO cooling switch for adaptive noise/performance selection

Snap-on covers direct airflow away from unused slots System Monitoring

Dual monitoring options with advanced triggering circuit for external synchronization

Programmable delay circuit for external instrumentation handshaking

Independently powered monitoring - does not consume VXI slots

Intelligent system monitor integrated

Key Features

Supports C-size VXI modules in 13 slots

Molded card guides ensure proper thermal and mechanical contact

Modular design with optional intermodule shield kit (Option 52) for reducing radiated noise

Shipping weight approximately 200 lbs

Typical Applications High-density automated test systems, signal processing platforms, and data acquisition networks requiring sustained high-power operation with precise thermal control and external trigger synchronization.

Compatibility & Integration Fully compatible with standard C-size VXI instrumentation. Available options include current sharing supply (1261B configurations), front extension mount assemblies for 24-inch racks, and cable trays (1U, 2U, 3U for 7U installations).