The Keysight M9120A is a high-density PXI matrix switch module delivering 4×32 2-wire switching architecture for automated test applications. Built on durable armature relays, it routes instrument signals to devices under test with simultaneous multi-channel connection capability. The module supports up to 60 W per channel and features a 4-wire wide bus for flexible signal routing between test instruments and DUT connection points.

Technical Specifications

Matrix Configuration
• 4×32 matrix with up to 128 2-wire full crosspoints
• Maximum power handling: 60 W per channel
• Switch/carry current: 2 A
• Maximum voltage (CAT 1): 100 Vrms (125 VDC alternate specification noted)
• Bandwidth: 7.5 MHz nominal

Interface & Connectivity
• 78-pin D-sub connector or cable connection options
• Connector block or standard cable termination available
• PXI-compliant with J1 connector support for cPCI, PXI-1, and PXIe hybrid slot chassis

– Key Features

• High-density 2-wire matrix in single-slot PXI form factor
• Armature relay construction for reliable simultaneous multi-channel switching
• Scalable architecture—multiple modules cascade to create larger matrices (e.g., four M9120A units form 4×64 configuration)
• Flexible connector options accommodate both panel-mount and cable-based installations

– Typical Applications

Automated test systems requiring multi-point switching between instruments and test devices. Suited for applications combining high-voltage switching with moderate power requirements in compact PXI-based test architectures.

– Compatibility & Integration

Compatible with PXI chassis supporting cPCI (J1), PXI-1 (J1 only), or PXIe hybrid slots. Software integration via LabVIEW, MATLAB, C/C++, C#, and Visual Basic. Configuration supported through Keysight Connection Expert and Keysight Command Expert. Module is discontinued but remains supported.