20 GHz VNA Vector Network Analyzer S Parameters HP Agilent 8720ES

A pre-owned Agilent 8720ES combines a synthesized 50 MHz-to-20 GHz source, vector receiver and solid-state switching into one chassis, delivering forward- and reverse-magnitude/phase measurements without external fixtures. Its ≈105 dB dynamic range exposes small ripple and mismatch in filters, cables and amplifiers, while fast sweeps and LAN/SCPI automation keep production throughput high. Optional time-domain and TRL software extend the analyzer’s reach to discontinuity location and on-wafer calibration.

Refurbished units ship ISO-17025-calibrated with current firmware, cutting capital expense and lead-time yet preserving Agilent reliability and long-term serviceability.

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Interested in HP Agilent 8720ES or a similar model?

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  • Provide extra photos, test data, and full configuration details.

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Looking for other models? Our inventory changes daily—ask for the latest list of spectrum analyzers and RF equipment.

Frequently Asked Questions (FAQ)

1/ Performance Assurance

Every unit is calibrated at an ISO/IEC 17025 accredited laboratory. The original calibration certificate, marked TESTRO Certified, is linked to the unit’s serial number and included in the shipment.

2/ Integrity of Internal Components

• A set of high-resolution teardown photographs showing seals, fasteners, and all critical modules.

• A live video session in which an engineer demonstrates gain-linearity, noise-floor, and spurious-response tests in real time.

  All recordings remain in our cloud archive for the life of the product.

3/ Warranty & Technical Support

• One-year transferable warranty.
• Our in-house engineering team is available on business days to provide remote software troubleshooting or hardware-assembly guidance.

4/ International Shipping Protection

• Custom flight case built from aviation-grade plywood with triple-layer anti-vibration foam.
• Shock- and tilt-indicator labels on every crate.
• Preferred carrier: DHL, delivery in 3–5 days to major destinations.

5/ Payment Terms

We accept T/T, wire transfer, credit card.

6/ On-Site Inspection

Customers are welcome to visit our Shenzhen warehouse and refurbishment line to inspect calibration benches, burn-in racks, and inventory.

Founded in 2017 and headquartered in Shenzhen, TESTRO Electronics LLC focuses on the secondary sale and flexible rental of high-end electronic test instruments. The team counts 30 employees and operates a 1,500 m² warehouse and inspection center in Qianhai, Shenzhen.

Industry Background & Resource Sourcing

Over the past two decades, rapid advances in China’s radio-frequency sector have shortened production-line refresh cycles to roughly 3–5 years. Leveraging long-term partnerships with equipment OEMs, research institutes, and calibration labs, TESTRO acquires traceable, well-maintained decommissioned or replacement units. Every instrument undergoes a five-step technical check and third-party calibration before entering stock, ensuring reliable performance data.

Core Services & Delivery Process