Repair and Service Evaluation - HP/Agilent 8720A, 8720B, 8720C, 8720D, 8720DX, 8720E, 8720ES

The HP/Agilent 8720 series network analyzers (models A through ES) are integrated vector measurement instruments for RF and microwave characterization. Each unit combines a synthesized source, tuned receiver, and switching S-parameter test set in a single platform. Frequency coverage spans 50 MHz to 20 GHz depending on model, with dynamic range up to 105 dB and measurement rates as fast as 1 ms/point.

These analyzers deliver accurate two-port S-parameter measurements for component evaluation, manufacturing validation, and R&D applications.

Technical Specifications

• Frequency Range: 50 MHz to 20 GHz (8720D/E/ES); 130 MHz to 20 GHz (8720A/B/C)


• Dynamic Range: Up to 105 dB (8720E/ES); 100 dB standard, 105 dB with Option 007 (8720D); >85 dB (8720A/B); up to 103 dB (8720C)


• Source Output Power: +10 dBm (8720A/B/C); +5 dBm standard or +10 dBm with Option 007 (8720D); varies by option (8720ES)


• Frequency Accuracy: 10 ppm typical


• Frequency Resolution: 1 Hz (8720A/B/C/D with Option 001); standard 100 kHz (8720C)


• Measurement Rate: <2 ms/point (1-port calibration) to <5 ms/point (2-port calibration) at 8720D; approximately 1 ms/point (8720C)


• Test Port Connector: 3.5 mm (8720D/C); 2.4 mm (8722C)


• Minimum Source Power: -70 dBm (8720D), -75 dBm (8722D standard), -65 dBm (8720C), -10 to -65 dBm (8720B)


• Physical (8720D): 222 mm H × 425 mm W × 457 mm D; 25 kg net weight

Key Features

• Vector S-parameter measurement with error correction


• Time-domain capability with Option 010


• Frequency offset mode for mixer measurements (Option 089)


• Material dielectric property measurements with optional probes and software


• High-power device measurement support

Interfaces & Integration

• HP-IB (IEEE 488) connectivity


• General Purpose Input/Output (GPIO) port


• TESTSET I/O interconnect


• Service documentation available as Option 0BW

Typical Applications

• Component characterization in R&D and design validation


• Manufacturing test and quality assurance


• Transmission and reflection measurements on two-port devices