The Keysight E1361A is a 2-Wire 4×4 relay matrix switch module designed for signal routing in automated test systems. This register-based VXI instrument provides flexible crosspoint connectivity, allowing any of four inputs to connect to any of four outputs through 16 latching relays. The matrix is reconfigurable—remove factory-installed jumpers to operate as a dual 2×4 matrix or 8:1 multiplexer. Each crosspoint handles 2-wire connections (Hi and Lo), supporting voltages up to 250 V DC, 250 V AC rms, or 354 V peak. The module maintains programmed relay states during power-down and resets all relays to open upon power-on.
Technical Specifications
Switching Matrix
• Configuration: 4×4, 2-wire (default); dual 2×4, 2-wire; or 8:1 multiplexer (jumper-selectable)
• Relay type: Latching
• Relay count: 16
Electrical Ratings
• Maximum voltage (DC): 250 V
• Maximum voltage (AC rms): 250 V
• Maximum voltage (peak): 354 V
• Maximum power per channel: 40 W
• Maximum power per module: 320 W, 960 VA
• Closed channel resistance (initial, typical): <1.5 Ω
• Closed channel resistance (end of life): 10⁸ Ω
• Bandwidth (-3 dB): 10 MHz minimum
Power Behavior
• Power-down: Relays retain programmed state
• Power-on: All relays reset to open
– Key Features
• Register-based VXI interface for direct system integration
• B-size, 1-slot form factor
• Low closed-channel resistance minimizes signal loss
• High insulation resistance ensures reliable isolation
• Dual 2×4 reconfiguration extends application flexibility
• 8:1 multiplexer mode for single-channel routing
– Typical Applications
• Automated test equipment signal routing
• Multi-channel measurement switching
• RF/microwave test matrix configurations
• Power switching and control in test systems
– Compatibility & Integration
The E1361A integrates directly into VXI (VME eXtensions for Instrumentation) test systems. Keysight provides instrument drivers to streamline system integration and control.
