The Keysight/Agilent/HP 34504A is a switch-shielded coaxial multiplexer module that routes multiple coaxial signals in automated test systems by simultaneously switching both center conductor and shield. This dual 1×6 configuration eliminates manual cable patching, reducing setup time and improving measurement repeatability in high-frequency applications.
## Technical Specifications
• Bandwidth: 100 MHz
• Channel Configuration: Dual 1×6 multiplexer
• Impedance: 50 Ω
• Maximum DC Voltage: 42 Vdc
• Maximum AC Voltage: 30 Vac RMS
• Maximum Current: 1 A
• Switched Shield: Yes
## Key Features
• Simultaneous center conductor and shield switching minimizes signal integrity degradation and EMI coupling
• 50 Ω impedance throughout signal path supports broadband coaxial applications up to 100 MHz
• Dual 1×6 topology enables independent routing of two signal paths or parallel switching of a single signal across multiple test points
• DC to 30 Vac rating with 1 A capacity accommodates RF, analog, and low-level DC measurement signals
• Plug-in module design integrates directly into compatible Keysight mainframes without external interface electronics
## Typical Applications
• RF and microwave signal routing in automated test environments
• Multi-channel device characterization requiring coaxial switching
• Antenna or filter network testing with rapid configuration changes
• Instrument-to-DUT signal distribution in production test systems
## Compatibility & Integration
The 34504A installs into Keysight/Agilent/HP mainframes including the 3235 and 3235A Switch/Test Units. It operates alongside related switching modules such as the 34505, 34506, 34501, 34511, and 34904A within the same platform, enabling mixed-topology test configurations. Coaxial connectors provide standard signal interfaces; specific connector type designation should be verified against your mainframe documentation.
