The Keysight L4433A Dual/Quad 4×8 Reed Matrix is a high-speed reed relay switching system engineered for flexible signal routing in automated test environments. This LXI Class C compliant instrument delivers 64 two-wire or 128 one-wire crosspoints and operates as either a dual or quad 4×8 matrix configuration. Built-in 10BaseT/100BaseTx Ethernet connectivity with graphical web interface simplifies system integration, while optional IEEE 488.2 GPIB support accommodates legacy test setups. The matrix handles switching voltages to ±150 V peak with maximum switch current of 0.5 A and carry current to 1.5 A, making it suitable for mixed-signal test applications across audio, RF, and power electronics domains.
Technical Specifications
• Crosspoint Capacity: 64 two-wire or 128 one-wire
• Switch Voltage (Max Peak): ±150 V peak
• Switch Current (Max): 0.5 A
• Carry Current (Max): 1.5 A
• DC Isolation: >10 GΩ (channel-to-channel, channel-to-earth)
• Bandwidth: 30 MHz at terminal block
• Power Supply: 100 V to 240 V ±10%, 50 Hz to 60 Hz ±10%
• Power Consumption: 15 VA
• Connectors: Standard 50-pin D-sub
• Non-Volatile Memory: 5 instrument states with user labels
• Operating Temperature: 0°C to 55°C (80% R.H. at 40°C)
• Storage Temperature: -40°C to 70°C
• Dimensions: 40.9 × 212.3 × 379.3 mm
• Weight: 3.9 kg
– Key Features
• High-speed reed relay architecture with inrush resistors on each column
• Relay counter for monitoring component life and reliability
• Sequence feature for defining and controlling switch closures
• External trigger capabilities for test synchronization
• Expandable via analog bus connector for larger matrix configurations
• Pollution degree 1 operation per IEC 61010-1
– Typical Applications
• Multi-point signal routing in production test
• Automated switching between DUT measurement nodes
• Transducer and sensor matrix switching
• Mixed-signal test signal distribution
– Compatibility & Integration
Supports IVI-C, IVI-COM, LabVIEW, Keysight VEE Pro, National Instruments TestStand, Measurement Studio, LabWindows/CVI, and Switch Executive. Standard drivers available for Microsoft Visual Basic 6, Visual Studio .NET, and C/C++. Minimum system requirements: Intel Pentium 100 MHz, 64 Mbyte RAM, 210 Mbyte disk space. Safety: CSA, UL/IEC/EN 61010-1. EMC: IEC/EN 61326-1, CISPR 11.
