The Agilent/HP 8720B is a two-port vector network analyzer covering 130 MHz to 20 GHz, delivering comprehensive S-parameter characterization with greater than 85 dB dynamic range. The instrument integrates a synthesized source, switching S-parameter test set, and full-color display to measure complex transmission and reflection characteristics of high-frequency components in a single connection. All four S-parameters (forward and reverse) are acquired without device reconnection. A built-in step attenuator provides incident power control from −10 to −65 dBm in 5 dB increments, with two internal bias tees for active device testing. The large color display renders data in multiple formats: log magnitude, linear magnitude, SWR, phase, group delay, polar, real, or Smith Chart across two independent channels. The instrument is fully programmable via HP-IB interface for automated test sequences and system integration. Optional frequency resolution extends to 1 Hz (Option 001), extended dynamic range (Option 003), and time-domain capability (Option 010) enhance measurement precision and analysis depth.
Technical Specifications
• Frequency range: 130 MHz to 20 GHz
• Frequency resolution: 1 Hz (Option 001)
• Dynamic range: Greater than 85 dB
• Output power: −65 dBm to −10 dBm (step attenuator control in 5 dB increments)
• S-parameter measurement: All four parameters (forward and reverse transmission and reflection)
• Display: Full-color with dual independent channels
• Display formats: Log magnitude, linear magnitude, SWR, phase, group delay, polar, real, Smith Chart
• Test set: Integrated switching design; compatible with HP/Agilent 85046A/B and 85047B external test sets
• Bias capability: Two internal tees for active device biasing
• Connectors: 3.5 mm
• Dimensions: 24 × 20 × 16 in
• Weight: 50 lbs
– Key Features
• Synthesized internal source eliminates external signal generators
• Single-connection measurement of complete two-port networks
• HP-IB programmability for test automation and integration
• Two bias tees enable on-device active component testing
– Typical Applications
• RF and microwave filter, amplifier, and mixer characterization
• Transmission line and component impedance analysis
• Active device S-parameter extraction and modeling
– Compatibility & Integration
Programs via HP-IB interface. Operates with HP/Agilent 85046A/B and 85047B external S-parameter test sets. Operating Manual Part Number: 08720-90107.
