The pre-owned Agilent E4403B delivers cost-effective RF spectrum analysis from 9 kHz to 3 GHz in a rugged, luggable chassis. Standard 1 kHz–5 MHz RBWs—narrowable to 100 Hz with Option 1DR—combine with a –104 dBc/Hz phase-noise floor to resolve closely spaced carriers, while the internal pre-amplifier (Option 1DS) lowers the noise floor to –158 dBm/Hz, revealing weak emissions without external LNAs. SCPI/IVI control, 1.1 dB amplitude accuracy, and upgradeable tracking-generator and measurement personalities make it a reliable production-line or service-bench workhorse.
Buying refurbished slashes capital expense and lead-time; units can ship ISO-17025-calibrated with verified firmware, preserving Agilent precision and long-term serviceability at a fraction of new-instrument cost.
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Interested in an Agilent E4403Bor 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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3 GHz Portable ESA-L Spectrum Analyzer RF Spectrum Analyzer Agilent E4403B Images
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