Rohde & Schwarz ZNH18 Handheld Vector Network Analyzer

Overview

The Rohde & Schwarz ZNH18 is a full two-port handheld vector network analyzer (VNA) designed for field measurements and maintenance of RF communications systems. It offers one-port cable and antenna measurements combined with full two-port S-parameter capabilities. The instrument features a touch-based interface, multi-touchscreen with smartphone-style gestures, configuration overview menu, and a compact, ruggedized housing (IP51) making it ideal for on-site field engineers and technicians.

With dedicated four-receiver architecture, the ZNH18 supports advanced calibration types such as UOSM calibration and delivers excellent performance including 100 dB typical dynamic range, highly accurate trace noise (0.0015 dB to 0.0040 dB RMS magnitude, 0.02° to 0.04° RMS phase), and built-in receiver step attenuator adjustable in 5 dB steps (0–15 dB). Free remote control apps for PC, Android, and iOS enable seamless operation from a distance, while an integrated measurement wizard automates test sequences to reduce human error.

Key Features

• Frequency range from 30 kHz to 18 GHz
• Two-port S-parameter measurements (S11, S12, S21, S22)
• One-port cable and antenna measurements
• 100 dB typical dynamic range
• Four-receiver architecture for UOSM calibration
• Multi-touch display with gesture control
• Non-reflective display and ruggedized IP51 housing
• Built-in receiver step attenuator (5 dB steps, 0–15 dB)
• Distance-to-fault, reflection, and transmission measurements
• Remote control via PC, Android, and iOS apps

Applications

• RF cable and antenna testing and diagnostics
• Filter and component characterization
• Radar and satellite system maintenance
• Field equipment verification and troubleshooting