Astronics / EADS / Racal 1260-X153 1 GHz Coaxial Tree Switch Plug-In Eight 1×4 and Four 1×2 Module

The Astronics/EADS/Racal 1260-X153 is a VXIbus plug-in coaxial switch module engineered for high-frequency RF signal routing in automated test equipment. It integrates eight 1×4 switch trees and four 1×2 switch trees to support complex signal distribution architectures. Operating to 1 GHz, this module delivers low insertion loss, high isolation, and excellent crosstalk performance across its bandwidth.

## Technical Specifications

**RF Performance**

• Bandwidth: 1 GHz
• Characteristic Impedance: 50 Ω
• Insertion Loss: ≤0.5 dB to 300 MHz
• Isolation: ≥85 dB to 100 MHz; ≥55 dB to 600 MHz
• VSWR: ≤1.1:1 to 100 MHz
• Crosstalk: −80 dB to 100 MHz; −55 dB to 600 MHz
• Path Resistance: <1.0 Ω (initial)
• Thermal EMF: 10⁹ Ω

**Environmental**

• Operating Temperature: 0 °C to +55 °C
• Dimensions: C-size, single-slot VXIbus module (4.5″ H × 0.75″ W × 9.5″ D)
• Weight: Approximately 14 oz (0.45 kg)

## Key Features

• Eight 1×4 coaxial switch trees
• Four 1×2 coaxial switch trees
• Electromechanical relay architecture
• Single VXIbus slot form factor
• 50 Ω impedance matching

## Typical Applications

• Telecommunications signal routing and switching
• RF/microwave automated test systems
• Multi-channel signal distribution in ATE platforms
• High-frequency component characterization

## Compatibility & Integration

The 1260-X153 operates within the 1260 series modular architecture. Integration requires a carrier module (such as the 1260-100 or 1260-101) and a smart controller (Option 01T) for command and control. The module draws airflow cooling as specified for the host carrier.