The HP/Agilent 44472A is a dual 1×4 VHF multiplexer module that routes and distributes signals across independent switch channels up to 300 MHz. Each of the two 1×4 multiplexer channels operates bi-directionally with 50 Ohm characteristic impedance, enabling flexible signal management in test and measurement setups. The module delivers very low crosstalk and high signal integrity, making it ideal for precision VHF measurements and multi-channel switching applications without ground loop interference.
Technical Specifications
• Frequency Range: DC to 300 MHz
• Impedance: 50 Ohms
• Switch Configuration: Two independent 1×4 multiplexer channels, bi-directional coaxial switches
• Maximum Voltage:
– Center-to-center, center-to-low: 250 V DC, 30 V AC RMS, or 42 V AC peak
– Low-to-chassis or low-to-low: 42 V DC
• Connectors: BNC terminal connectors
– Key Features
• Bi-directional coaxial switching eliminates the need for separate input and output paths
• Very low crosstalk between channels ensures signal fidelity in multi-channel measurements
• Channel isolation prevents ground loops and cross-talk between the two independent 1×4 groups
• Broadband DC to 300 MHz capability handles high-frequency and pulse signals
• High signal integrity suitable for direct connection to spectrum analyzers, network analyzers, and distortion analyzers
– Typical Applications
• Automated test systems requiring multi-channel signal routing
• Communications and broadcast signal distribution
• VHF signal measurements with spectrum and network analyzers
• Multiplexing multiple inputs to GPIB oscilloscopes and waveform analyzers
• Laboratory environments requiring flexible signal path management
– Compatibility & Integration
The 44472A is designed as a plug-in module for HP/Agilent mainframe systems including the HP 3488A and Agilent 3499A/B/C. Integration with these platforms enables automated signal routing control via GPIB instrumentation.
