The HP/Agilent 34904A is a 4×8 two-wire matrix module that plugs directly into Agilent 34970A or 34972A data acquisition/switch mainframes. It provides 32 two-wire crosspoints for flexible signal routing between instruments and multiple points on a device under test (DUT). The module handles switching up to 300 V and 1 A, making it suitable for a wide range of analog and low-level switching applications.
This module excels in test environments requiring concurrent connections from multiple instruments to various DUT nodes. Individual 34904A modules can be combined within a single mainframe—interconnecting rows or columns—to construct larger matrix configurations. An 8×8 matrix, 4×16 matrix, or other expanded topologies can be built this way, with a maximum capacity of 96 crosspoints per mainframe.
Technical Specifications
• Matrix configuration: 4×8 two-wire
• Crosspoints: 32 two-wire
• Maximum switching voltage: 300 V
• Maximum switching current: 1 A
• Module type: Plug-in for 34970A/34972A mainframes
• Maximum expandable crosspoints per mainframe: 96
– Key Features
• High-density switching in a compact form factor
• Flexible row and column interconnection for matrix expansion
• Direct backplane integration with mainframe control electronics
• Rated for DC and AC signal switching within specified voltage and current limits
– Typical Applications
• Automated test and measurement of multi-channel devices
• Complex signal routing in production test environments
• Simultaneous connection of multiple measurement instruments to DUT test points
• Electronic circuit characterization and validation
– Compatibility & Integration
• Compatible with: Agilent 34970A Data Acquisition/Switch Unit
• Compatible with: Agilent 34972A Data Acquisition/Switch Unit
• Internal connection: Mainframe backplane for signal and control routing
• Expandable: Multiple modules interconnect to form 8×8, 4×16, or larger matrices within a single chassis


















