The Rohde & Schwarz ZNH18 is a two-port handheld vector network analyzer delivering full S-parameter measurement from 30 kHz to 18 GHz. Built for field deployment, it combines a 7-inch capacitive touchscreen with intuitive gesture control, physical keys, and an illuminated keypad to enable accurate RF characterization in indoor, outdoor, and mobile environments.
Technical Specifications
Frequency and Performance
• Frequency range: 30 kHz to 18 GHz with 1 Hz resolution
• Measurement range: −120 dB to +30 dB
• Dynamic range (specified): 80 to 88 dB
• Output power: 0 dBm
• Maximum input power at test ports: +23 dBm (0.2 W)
• IF bandwidth: 1 kHz
• Analysis bandwidth: 10 Hz to 100 kHz (1/3/10 step increments)
Trace Noise
• Magnitude (RMS): <0.0015 dB (30 kHz–8 GHz), <0.0020 dB (8–15 GHz), <0.0040 dB (15–18 GHz)
• Phase (RMS): <0.015° (30 kHz–8 GHz), <0.025° (8–18 GHz)
Port Configuration
• Two-port, Type N female connectors, 50 Ω impedance
• One-port cable/antenna measurement (Distance-to-Fault, line loss)
• Two-port vector network analysis (S11, S21, S12, S22)
• Directivity: 41 to 48 dB
• Linearity: 10 dB
– Key Features
Calibration & Measurement
• One-port (OSM) and two-port (TOSM, UOSM) calibration
• Transmission calibration (P1, P2, both directions)
• Optional: power measurement, pulse measurement, vector voltmeter, variable DC bias (+2 V to +32 V), wave ratios and quantities
Display and Control
• 7-inch WVGA touchscreen (800 × 480 pixels) with pinch-to-zoom and smartphone-like gestures
• Backlit keypad with rotary knob control
Power and Connectivity
• AC input: 100–240 V, 50/60 Hz; DC input: 14.65–15.45 V (external)
• Lithium-ion battery with up to 4 hours runtime
• USB, micro SD, and LAN interfaces
• Remote control via PC, Android, or iOS apps
– Typical Applications
• Antenna and cable characterization
• Component reflection and transmission analysis
• Impedance and return loss measurement
• Field troubleshooting and maintenance
– Compatibility & Integration
Data storage on USB stick or micro SD card. Network connectivity via LAN for remote operation and app-based control on Android and iOS platforms.
