Agilent/Keysight N4420B

The Agilent/Keysight N4420B is a multiport S-parameter test set that extends compatible vector network analyzers to perform full four-port measurements on RF and microwave devices. Operating across 10 MHz to 40 GHz, this external test set delivers high-accuracy S-parameter characterization with balanced measurement support and electronic calibration capability. It integrates directly with PNA and PNA-L network analyzers equipped with Option 550, enabling efficient production testing and rapid measurement cycles without sacrificing accuracy.

– Technical Specifications

• Frequency range: 10 MHz to 40 GHz
• Four-port measurement capability when used with a 2-port VNA and Option 550
• Test port connectors: 2.4 mm (male)
• RF connectors: 2.4 mm (female)
• Full four-port vector error correction
• Time-domain spatial resolution: 18 ps
• Weight: 9 kg (19.9 lb)
• Dimensions: 16.75 in. × 16.75 in. × 5.5 in. height (2 RU)

– Key Features

• Conventional and mixed-mode S-parameter display
• Test data renormalization for non-50 Ω devices
• Fast, automatic calibration with electronic calibration (ECal) modules
• User-defined parameter calculation and display
• Time-domain analysis with eye-diagram capability for high bit-rate evaluation
• RLCG extraction for differential transmission line modeling

– Typical Applications

• Manufacturing test of multiport RF and microwave circuits
• Balanced device characterization and validation
• High-speed differential transmission line analysis
• Rapid throughput environments requiring minimal setup time

– Compatibility & Integration

The N4420B operates under direct control of compatible PNA and PNA-L network analyzers. Integration requires Option 550 (four-port error correction and differential measurement support) plus either Option 014 (PNA) or Option 425 (PNA-L) to access source outputs, receiver inputs, and coupler connections. Recommended configurations include the E8363B PNA with Options 014 and 550, or the N5230A PNA-L with Options 425 and 550.