Description
Rohde & Schwarz ZNBT26 Vector Network Analyzer Repair
The Rohde & Schwarz ZNBT26 is a multiport vector network analyzer covering up to 26.5 GHz — a high-port-count VNA (8–24 ports) for measuring S-parameters and balanced/differential parameters on multiport components and modules in production and R&D. As a precision multiport microwave instrument, its faults concentrate in the source and receiver chains, the many test ports and internal switching, and calibration stability.
June Company repairs and calibrates the R&S ZNBT26 for multiport RF/microwave and production-test teams.
Common R&S ZNBT26 problems we fix
- Balanced / differential measurement faults — port or receiver faults affecting balanced measurements, repaired so multiport/differential results are accurate.
- A port dead or degraded — port or internal-switching damage on a high-port-count unit, repaired.
- Calibration won’t hold — source/receiver or directivity faults, tracked down and recalibrated.
- Source or receiver chain faults — no stimulus or low sensitivity, restored.
- Display or interface faults.
FAQs
One of my ZNBT26 ports is down — fixable? Yes. Port and switching faults are repairable, then all ports are verified so multiport and balanced S-parameter measurement is accurate, with a NIST-traceable certificate.
Are all ports serviceable? Yes — port and test-set 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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