The Rohde & Schwarz ZNBT8 is a 4-port vector network analyzer operating from 9 kHz to 8.5 GHz, designed for RF component and module characterization in development, production, and service environments. Its true multiport architecture features one reflectometer per test port with full phase coherence across all ports, eliminating switch matrix losses. The instrument delivers up to 140 dB dynamic range and supports simultaneous measurements across all ports—capable of measuring 24 one-port DUTs in 1.9 ms per frequency sweep at 201 points. Expandable to 24 ports, the ZNBT8 combines fast measurement speeds with extensive calibration flexibility and output power control from -85 dBm to +15 dBm.
Technical Specifications
• Frequency Range: 9 kHz to 8.5 GHz
• Output Power: -85 dBm to +15 dBm (ZNBT8 base configuration)
• Dynamic Range: Up to 140 dB
• Power Sweep Range: Up to 100 dB
• IF Bandwidth: 1 Hz to 10 MHz
• Temperature Stability: 0.01 dB/°K
• Sweep Time: 2.5 ms to 6 ms for 201 points
• Trace/Channel Capacity: More than 100 traces and channels
• Test Ports: N(f) connectors; expandable from 4 to 24 ports
• Shipping Weight: 28 kg (4-port base configuration)
– Key Features
• True multiport reflectometer design with one reflectometer per port eliminates switch matrix insertion losses
• Fully phase-coherent receivers across all test ports enabling multiport vector measurements
• Simultaneous measurements on multiple DUTs or complex multiport devices via parallel data capture
• Extended IF bandwidth to 10 MHz for detailed frequency response analysis
• Manual and automatic calibration methods including OSM, TOSM, UOSM, and full N-port calibration
• Temperature-stabilized measurements with 0.01 dB/°K drift
– Typical Applications
• Mobile radio and wireless communications component testing
• Multiport RF module characterization and validation
• Production test environments requiring parallel measurement throughput
• Service and repair diagnostics for complex RF assemblies
– Compatibility & Integration
• SCPI command interface for automation and remote operation
• Handler I/O interface for external parts handler integration
• Remote Desktop connection capability
• Optional GPIB interface
• External keyboard, mouse, and monitor support
