The Agilent/Keysight 35689B is a 75-ohm S-parameter test set that extends the vector network analysis capabilities of the 3589A spectrum analyzer. Operating from 100 kHz to 150 MHz, this 2-port measurement system delivers automated switching and full test port control through Type-N connectors. The 35689B addresses 75-ohm system characterization, complementing the 50-ohm 35689A variant.
Technical Specifications
• Frequency Range: 100 kHz to 150 MHz
• System Impedance: 75 Ohms
• Ports: 2-port configuration
• Test Port Connectors: Type-N
• Spectrum Input Port: 75 Ohm
• Switching: Automatic
– Key Features
• Automatically switched measurement architecture eliminates manual port selection during testing
• Type-N test ports ensure reliable 75-ohm RF connections
• Direct integration with the 3589A spectrum analyzer for control and data flow
• Full 2-port S-parameter measurement capability across the 100 kHz to 150 MHz band
– Typical Applications
The 35689B serves transmission line characterization, impedance matching networks, filter response analysis, and component S-parameter extraction in 75-ohm RF and microwave systems. Cable and connector measurements benefit from its dedicated 75-ohm design.
– Compatibility & Integration
Purpose-built for the Agilent/Keysight 3589A spectrum analyzer, the 35689B interfaces directly with the analyzer’s measurement engine. The test set operates exclusively in 75-ohm environments; users working with 50-ohm systems require the 35689A model instead.
