The HP/Agilent 8720ET is a 20 GHz Vector Network Analyzer delivering high-performance transmission and reflection measurements across 50 kHz to 20 GHz. This instrument characterizes S-parameters with exceptional accuracy, supporting full 2-port calibration and multiple measurement formats including magnitude, phase, group delay, and Smith chart representation. Engineers rely on it for component characterization, system validation, and RF/microwave circuit development where trace noise below 0.005 dB RMS and 115 dB dynamic range are essential.
Technical Specifications
Frequency Range: 50 kHz to 20 GHz with 1 Hz resolution
Dynamic Range:
• Trace Noise (10 Hz BW): < 0.005 dB RMS
• 115 dB at 10 Hz BW
• 110 dB at 100 Hz BW
• 105 dB at 1 kHz BW
Measurement Capabilities:
• S-parameters: S11, S21, S12, S22 (magnitude, phase, real, imaginary, group delay, log magnitude, VSWR)
• Data points: 2 to 1601
• Sweep types: Frequency, List
• Power level: -10 dBm to +10 dBm (0.1 dB steps)
• Source harmonics: < -35 dBc
• Source spurious: < -50 dBc
• Source match: < 1.20 VSWR, typically 115 dB
Accuracy:
• Frequency response: ±0.05 dB
• Phase response: ±0.3 degrees
• Phase noise: < -100 dBc/Hz at 10 kHz offset (10 GHz)
Speed: 200 ms/point (201-point sweep, 100 Hz BW); 2-port calibration < 30 seconds
– Key Features
Color CRT integrated display. Full 2-port, response, isolation, electrical delay, and multiport calibration options. Dual measurement ports with Type-N female 50 Ω connectors. GPIB (IEEE-488) control interface for remote automation.
– Electrical & Physical
500 VA max power consumption. Operates on 90–132 VAC or 195–264 VAC, 47–63 Hz. Dimensions: 437 mm W × 190 mm H × 559 mm D. Weight: 26 kg.
– Compatibility & Integration
GPIB control enables integration into automated test systems. Firmware supports various configurations for specialized measurement functions.
