The Keysight M9121A is a PXI high-density matrix switch module that routes signals between multiple instruments and device-under-test connection points within a PXI chassis. The module delivers a 4×64 full crosspoint switching matrix with 256 total channels, using high-speed, long-life reed relays rated for 100 Vrms operation and 0.5 A switching/carry current. Maximum power dissipation is 10 W per channel, making it suitable for complex automated test scenarios requiring rapid signal reconfiguration.
Technical Specifications
• Configuration: 4×64 full crosspoint matrix (256 channels)
• Switch type: 2-wire reed relay
• Maximum voltage: 100 Vrms
• Maximum current: 0.5 A (switch and carry)
• Maximum power per channel: 10 W
• Module width: 4 PXI slots
• Connectors: 200-pin LFH connector block or cable connections
– Key Features
• Ultra-high-density architecture minimizes PXI chassis footprint while maintaining full crosspoint capability
• Long-life reed relay design ensures extended operating life in high-cycle test environments
• Direct integration with PXI chassis via cPCI (J1), PXI-1 (J1 only), or PXIe hybrid slot connectors
• Scalable matrix configuration—multiple M9121A modules can be daisy-chained to create larger matrices (e.g., 4×128)
• Support for Visual Studio, C, C++, C#, Visual Basic, MATLAB, and LabVIEW programming environments
– Typical Applications
• Multi-point signal routing in semiconductor and component test
• Automated test equipment (ATE) requiring frequent signal reconfiguration
• Device characterization with instrument-to-DUT connection flexibility
• Production test systems needing high channel density in minimal rack space
– Compatibility & Integration
The M9121A operates within standard PXI chassis architectures and integrates directly with Keysight Connection Expert and soft front panels for streamlined system configuration. Comprehensive programming support and documented soft front panel drivers enable rapid deployment in established test frameworks.
