The Rohde & Schwarz ZNB8 is a 4-port vector network analyzer delivering high-performance RF and microwave measurements from 100 kHz to 8 GHz. With 140 dB dynamic range at 10 MHz and measurement speeds under 30 ms for 1001-point sweeps, it characterizes filters, amplifiers, RF modules, and components across R&D, manufacturing, and quality control workflows. Fast calibration, multiple display formats, and extensive connectivity make it a production-ready platform for precision impedance and transmission analysis.
Technical Specifications
Frequency and Ports
• Frequency range: 100 kHz to 8 GHz
• 4-port configuration
Dynamic Range and Accuracy
• Dynamic range: 140 dB (at 10 MHz)
• Residual reflection: −38 dB typical (at 10 GHz)
• Residual transmission: −110 dB typical (at 10 GHz)
• Phase stability: <0.1° typical (at 10 GHz, 1 hour warm-up)
• Power accuracy: ±0.5 dB typical
Measurement Performance
• 2-port calibrated measurement: 4.3 ms (201 points, fastest mode)
• 4-port calibrated measurement: 8.6 ms (201 points, fastest mode)
• Typical sweep time: <30 ms (1001 points)
• IF bandwidth: 1 Hz to 10 MHz
• Power level range: −60 dBm to +10 dBm
Calibration
• Supported methods: SOLT, TRL, USER
• Full 4-port calibration time: <8.6 ms
Display and Data
• 16 simultaneous traces
• Up to 100,001 data points per trace
• Display modes: Logarithmic Magnitude, Group Delay, Phase, Smith Chart, Polar Diagram, Real/Imaginary
Physical and Electrical
• Dimensions: 440 mm (W) × 177 mm (H) × 486 mm (D)
• Weight: ~14 kg
• Power consumption: 450 VA maximum
• Operating temperature: 5°C to 40°C
• Source and reference impedance: 50 Ω
– Key Features
• 140 dB effective dynamic range enables low-loss component measurement
• Sub-30 ms sweep times accelerate design iteration and production testing
• Multiple calibration standards (SOLT, TRL, USER) for diverse measurement requirements
• LAN, USB, GPIB, and external trigger I/O for system integration
• Wide IF bandwidth adjustment (1 Hz to 10 MHz) for noise/speed tradeoffs
– Typical Applications
• Filter and amplifier characterization
• RF module and component validation
• Transmission line and impedance analysis
• Manufacturing and quality control testing
• Research and development of RF circuits
– Compatibility & Integration
The ZNB8 accepts standard calibration kits (SOLT, TRL) for its frequency range, N-type/SMA/3.5 mm adapters, frequency-rated test cables, and external power measurement instruments. LAN, USB, GPIB, and clock reference inputs support integration into automated test systems and remote operation environments.
