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.
