The Keysight (Agilent) 87104C is a Single Pole, 4 Throw (SP4T) multiport coaxial switch engineered for RF and microwave signal routing from DC to 26.5 GHz. Built around magnetic latching technology with terminated 50 ohm ports, this switch delivers low insertion loss and exceptional isolation across its operating bandwidth. Operating life exceeds 10 million cycles with guaranteed insertion loss repeatability of 0.03 dB through 5 million cycles at 25 °C—a critical performance metric for reducing measurement uncertainty in production and research environments.
Technical Specifications
• Frequency Range: DC to 26.5 GHz
• Configuration: SP4T (Single Pole, 4 Throw)
• Switching Mechanism: Magnetic latching
• Port Type: Terminated ports, 50 ohm impedance
• Operating Life: >10 million cycles
• Insertion Loss: 0.4 dB at 26.5 GHz; 0.03 dB repeatability (guaranteed to 5 million cycles)
• Isolation: Typically >100 dB to 12 GHz; >90 dB to 26.5 GHz; 80 dB at 26.5 GHz
• VSWR: 1.2 maximum DC to 4 GHz; 1.3:1 at 26.5 GHz
• Maximum Power Rating: 100 mW
• Switching Speed: <10 ms
• Physical Dimensions: 19″ × 1.75″ × 15.25″ (rack-mountable)
• Weight: 12 lbs
• Power Requirements: 24 VDC
– Key Features
• Magnetic latching eliminates continuous power draw during idle states
• Low insertion loss repeatability minimizes random measurement errors
• Opto-electronic indicators and interrupt signals for status monitoring
• Superior isolation maintains signal fidelity across all ports
• Exceptional VSWR performance ensures minimal reflections and system stability
– Typical Applications
• Automated Test and Measurement (ATE) systems requiring accurate signal routing
• RF and microwave instrumentation test benches
• Multi-port signal monitoring and switching architectures
• Production test environments demanding high cycle reliability
– Compatibility & Integration
• Control Interfaces: GPIB, RS-232, LAN, SCPI commands, front-panel control
• Optional Logic Configurations: TTL/5V CMOS compatible; 24 V DC without TTL logic (model 024); 16 PIN DIP socket with 24 inch ribbon cable (model 161)
