Agilent/Keysight 8720C

The Agilent/Keysight 8720C is a microwave vector network analyzer engineered for RF and microwave component characterization across research, development, manufacturing, and quality assurance environments. The instrument combines a synthesized source, integrated S-parameter test set, and tuned receiver into a single platform, delivering dynamic range exceeding 85 dB and extending to 103 dB with variable-bandwidth IF filtering.

Technical Specifications

• 50 MHz to 20 GHz operating range


• 100 kHz frequency resolution (standard); 1 Hz resolution available with Option 001


• Synthesized source with ±10 ppm typical stability and accuracy Measurement Performance


• Dynamic range greater than 85 dB (103 dB maximum with variable-bandwidth IF filters)


• Output power: +10 dBm at test ports; adjustable to −65 dBm with built-in attenuator


• All four S-parameters (forward and reverse) measured with single connection via integrated switching test set


• Vector accuracy enhancement includes full two-port and adapter-removal calibration; optional TRL calibration supported Display and Analysis


• Two independent display channels for simultaneous reflection and transmission measurement


• Four display channel capability also available


• Format options: log magnitude, linear magnitude, SWR, phase, group delay, polar, real, and Smith Chart


• Optional time-domain analysis (Option 010) for response versus time or distance computation

Key Features

• Fast-sweeping synthesized source with integrated vector receiver


• Solid-state switch option (Option 006) enables simultaneous forward/reverse measurement and continuous four-parameter S-parameter updates


• Advanced marker functions (up to five per channel): delta calculation, max/min tracking, automatic center frequency/bandwidth/Q computation for bandpass filters


• Pass/Fail testing with limit-test quantitative decision capability


• Frequency subset feature for response analysis without recalibration


• Configuration save/recall to volatile memory or external disk drive


• Direct printer/plotter output

Typical Applications

• Component characterization and S-parameter measurement


• Manufacturing test and incoming inspection


• Design verification and quality assurance

Compatibility & Integration

• Fully programmable via HP-IB bus from external computer