Description
Keysight P9373A USB Analyzer Repair
The Keysight P9373A is a USB-based 2-port vector network analyzer — a Streamline-series VNA covering up to 14 GHz that connects to a PC over USB, measuring S-parameters on components, cables, and devices without a built-in display. As a precision microwave instrument, its faults concentrate in the source and receiver chains, the test ports, and the USB/control interface.
June Company repairs and calibrates the Keysight P9373A for RF/microwave engineering and component-test teams.
Common Keysight P9373A problems we fix
- Port or test-set damage — a damaged measurement port from overpower or connector wear degrading S-parameter accuracy, repaired.
- Calibration won’t hold / fails — source, receiver, or directivity faults making cal unstable, tracked down and repaired.
- Won’t enumerate / USB-control faults — the USB interface that the PC software needs, restored.
- Source or receiver faults — no stimulus or low sensitivity, repaired.
- Power or internal faults.
FAQs
My P9373A won’t connect or cal won’t hold — fixable? Yes. USB-interface and source/receiver faults are repairable, then verified so it links to your software and measures stable S-parameters, with a NIST-traceable certificate.
Are the ports serviceable? Yes — port repair is routine.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or submit a service request.






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