The Rohde & Schwarz ZNL4 is a 2-port vector network analyzer covering 5 kHz to 4.5 GHz with integrated spectrum analysis and power meter capabilities. It delivers dynamic range up to 130 dB (typical at 10 Hz IFBW) and trace noise below 0.0005 dB (typical at 10 kHz IFBW) for high-fidelity RF characterization. The instrument measures magnitude and phase of S-parameters across frequency bands with 1 Hz resolution and 0.01 dB amplitude resolution, supporting up to 100,001 measurement points per trace.
Optional spectrum analyzer functionality extends measurement bandwidth to 40 MHz, while external power sensor integration accommodates up to four R&S®NRP sensors in parallel. A 10.1-inch WXGA capacitive touchscreen with multitouch support enables intuitive operation and simultaneous display of multiple measurement modes. The compact form factor—408 mm × 186 mm × 235 mm, weighing 6 kg to 7.3 kg—suits both benchtop and field deployment, particularly with an optional battery pack. Type N (female) connectors serve as test ports; Windows 10 operating system with fully integrated PC provides the control platform.
– Technical Specifications
• Frequency Range: 5 kHz to 4.5 GHz
• Number of Ports: 2
• Test Port Connector: Type N (female)
• Dynamic Range: Up to 130 dB (typical at 10 Hz IFBW); 85 dB minimum at 5–100 kHz, 100 dB minimum at 100 kHz–10 MHz, 110 dB minimum at 10–50 MHz, 120 dB minimum at 50 MHz–4.5 GHz
• Trace Noise: Less than 0.0005 dB (typical at 10 kHz IFBW)
• Output Power: Typically 3 dBm; range –40 dBm to +3 dBm
• Maximum Input Level: +15 dBm
• Noise Floor: –140 dBm/Hz (typical)
• DANL: Less than –112 dBm (specified), –120 dBm (typical); –150 dBm (typical) with spectrum analyzer option
• Third-Order Intercept (TOI): Greater than 16 dBm (specified), 22 dBm (typical) for 300 MHz ≤ fin ≤ 3 GHz
• Phase Noise: Less than –105 dBc (1 Hz) at 1 GHz, 10 kHz offset; –108 dBc (1 Hz) typical
• Measurement Bandwidth (IFBW): 1 Hz to 500 kHz
• Frequency Resolution: 1 Hz
• Amplitude Resolution: 0.01 dB
• Measurement Points: 1 to 100,001 per trace
– Key Features
• Vector network analysis with S-parameter magnitude and phase measurement
• Integrated spectrum analyzer option with up to 40 MHz analysis bandwidth
• External power sensor support via R&S®NRP sensors (four in parallel maximum)
• Time domain analysis capability
• 10.1-inch WXGA multitouch display
• Windows 10 with fully integrated PC
• Compact, portable design with optional battery pack
– Typical Applications
• RF component characterization and device testing
• Network parameter measurement across microwave and RF frequencies
• Field-deployable network analysis with extended measurement bandwidth options
• Multi-port power monitoring via integrated sensor support
– Compatibility & Integration
Accepts external R&S®NRP power sensors through dedicated interface option. Spectrum analyzer functionality available via R&S®ZNL4-B1 option with extended bandwidth via R&S®FPL1-B40. Windows 10 environment supports standard software integration and remote control.
