Astronics / EADS / Racal 1260-35B High-Density Multiplexer Module

The Astronics/EADS/Racal 1260-35B is a high-density multiplexer module engineered for signal routing and switching in VXI platforms. This C-size module delivers 50 MHz bandwidth and supports up to 250 VDC at 1A per channel, making it suitable for applications requiring flexible multi-channel signal management. The 1260-35B accommodates ten user-selectable configurations, from a single 1×96 two-wire multiplexer to a 1×192 one-wire topology, enabling rapid adaptation to diverse test requirements without hardware changes. ## Technical Specifications • Bandwidth: 50 MHz • Maximum Switching Voltage: 250 VDC per channel • Maximum Switching Current: 1A per channel • Form Factor: Single-slot C-size VXI module • Weight: 3.07 lb (1.33 kg) without Option 01/01T • Dimensions: 4.5" H × 0.75" W × 9.5" D • Cooling Requirement: 4.0 l/s airflow • Operating Temperature: 0°C to +55°C • Non-Operating Temperature: -40°C to +75°C • Altitude: 10,000 ft maximum operating altitude • Relative Humidity: 85% ±5%, non-condensing ## Key Features • Configurable Multiplexer Topologies: Switch-selectable configurations include one 1×96, two 1×48, four 1×24, eight 1×12, or sixteen 1×6 two-wire multiplexers; one 1×48, two 1×24, four 1×12, or eight 1×6 four-wire multiplexers; and one 1×192 one-wire multiplexer • Dual Control Interfaces: Message-based control via Smart Card (Option 01) and register-based control via Option 01T interface • Local Control: Racal LBus compatibility • Relay Coil Monitoring: Available for confidence checking • Register-Based Operation: Control registers manage eight channels simultaneously with per-bit relay control • Low Thermal Offset: Minimizes measurement error in sensitive applications • User Connector Options: IDC ribbon cable connectors (1260-35) or crimp-pin connectors (1260-35A) ## Typical Applications Continuity testing, signal path verification, multi-channel sensor switching, automated test equipment integration, and complex signal routing within laboratory and production environments. ## Compatibility & Integration The module integrates with Racal Instruments 1260-100 and 1260-101 Adapt-A-Switch VXI carriers, as well as the 1256 GPIB/RS-232 switching mainframe and 1256L LXI Core 2011-compliant mainframe.