Astronics / EADS / Racal 1260-30B Multiplexer VXI Module

The Astronics/EADS/Racal 1260-30B is a C-size VXIbus multiplexer module that provides dual 1×20 two-wire switching for signal routing in automated test and data acquisition systems. This electromechanical relay-based module handles switching up to 250 VDC or 250 VAC rms at currents to 2 A, with bandwidth to 10 MHz. It integrates into standard VXIbus chassis and operates under message-based or register-based control via an Option 01 Smart Card, making it suitable for multi-point scanning, continuity testing, and confidence checking via relay coil current monitoring.

## Technical Specifications

• **Form Factor:** C-size, single-slot VXIbus module
• **Configuration:** Dual 1×20 two-wire multiplexer
• **Switching Voltage:** 250 VDC or 250 VAC rms maximum
• **Switching Current:** 2 A maximum
• **Bandwidth:** 10 MHz
• **Relay Type:** Electromechanical
• **Power Supply:** +5 VDC, 150 mA typical
• **Operating Temperature:** 0 °C to 55 °C
• **Non-operating Temperature:** −40 °C to +75 °C
• **Relative Humidity:** 85 % ±5 % non-condensing at 30 °C
• **Operating Altitude:** 10,000 ft maximum
• **Weight:** 3.2 lbs (1.45 kg) without Option 01T

## Key Features

• Relay coil current monitoring for confidence checking of switching integrity
• Mounting holes per channel enable integration of user-supplied components
• Register-based and message-based control protocols supported
• Compact single-slot design for dense test system configurations

## Typical Applications

• Multi-point UUT test scanning with DMM or continuity testers
• High-voltage and high-current signal routing in automated test systems
• RF and audio signal switching within integrated test platforms
• Data acquisition point selection across multiple signal types

## Compatibility & Integration

The 1260-30B requires integration into a VXIbus-compatible chassis and an Option 01 Smart Card configured as system master for control. It complies with EN61010-1 (safety), EN55011A (emissions), and IEC801-2, 3, 4 (immunity) standards. Proper third-wire earth grounding is mandatory for safe operation.