The Keysight L4437A is a 32-channel general-purpose switch module engineered for automated test systems and data acquisition. It combines 28 Form C (SPDT) channels with 4 Form A (SPST) channels, delivering flexible switching across diverse signal types and power levels. The module is LXI Class C compliant with Ethernet connectivity, enabling remote operation and straightforward integration into distributed test environments.
Technical Specifications
Switch Configuration
• 28 Form C (SPDT) channels: 300 V DC/AC RMS, 1 A maximum, 60 W maximum
• 4 Form A (SPST) channels: 30 V DC / 250 V AC, 5 A maximum, 150 W maximum
• Latching armature relays with simultaneous switching capability
• Bandwidth: 10 MHz at terminal block
• Offset voltage: <3 µV Physical & Power
• Dimensions: 40.9 × 212.3 × 379.3 mm
• Weight: 3.8 kg
• Universal supply: 100–240 V ±10%, 50–60 Hz ±10%
• Power consumption: 15 VA
• Operating temperature: 0°C to 55°C; storage: −40°C to 70°C – Key Features • Relay counter for operational monitoring and maintenance planning
• Integrated temperature sensor with overheating protection
• Sequence feature for defining multi-step switch closures and control logic
• External trigger support for system synchronization
• Optional terminal blocks with snubbing circuit pads for reactive load switching
• 50-pin D-sub connectors (30 µin gold plating) plus optional mass interconnect solutions – Typical Applications Automated component testing, signal routing in measurement systems, power distribution control, and multi-channel data acquisition where Form C and Form A switching topologies are required. – Compatibility & Integration LAN interface (10BaseT/100BaseTx) with optional IEEE 488.2 GPIB. Supported by Keysight E2094N I/O Libraries Suite (v14 or greater). Meets CSA, UL/IEC/EN 61010-1 safety and IEC/EN 61326-1, CISPR 11 EMC standards.
