A refurbished Agilent 83731B pairs fully-synthesized accuracy with analog-sweep speed, covering 1 GHz to 20 GHz in one 3-U chassis. One-kilohertz tuning steps (or 1 Hz with the fractional-N option) and –80 dBc/Hz phase-noise performance keep local-oscillator substitution and mixer tests honest, while the optional 110 dB step attenuator delivers a calibrated +13 dBm to –110 dBm span for PA compression, receiver sensitivity or EMC immunity work. Fundamental oscillators and switched low-pass filters hold harmonics below –55 dBc, and fast band-to-band switching with SCPI/LAN control drops straight into automated benches.
Buying pre-owned trims cap-ex and lead-time yet ships ISO-17025-calibrated with current firmware, preserving Keysight reliability and long-term serviceability at a fraction of new-unit cost.
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Interested in an Agilent 83731B or a similar model?
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
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A set of high-resolution teardown photographs showing seals, fasteners, and all critical modules.
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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.
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High Purity Synthesized Signal Generator RF 83731B Agilent 1 – 20 GHz Images
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